docs: correct the places where documents contradicted their own evidence

An independent audit found ten documents printing values their evidence files do not contain. C-1 printed a session count of 0 where the evidence says 4, C-2 printed a success readback for a command that exited 1, and A-1 credited the conntrack flush with a split that the timestamps attribute to a pod restart four seconds earlier. Also measured wal_writer_delay, which A-3 had asserted as matching without ever querying it, relabelled the A-6 control that moved 41 percent, noted A-8's nine-sample resolution, corrected D-1's RTO to the 41 seconds its own timeline shows, and added a correction banner to D-2. Every experiment document now links its evidence files with their real collection times, and the duplicate screenshots are documented as duplicates. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
docs: add SVG diagrams, explicit concept sections and the diagram convention
2026-09-04 16:35:49 +09:00 · 2026-09-04 16:20:05 +09:00 · 2026-09-04 16:18:33 +09:00 · 2026-09-04 15:11:32 +09:00 · 2026-09-04 15:09:36 +09:00 · 2026-09-04 15:07:35 +09:00
153 changed files with 6461 additions and 13 deletions
@@ -0,0 +1,2 @@
 [    6898ms] [ERROR] Failed to load resource: the server responded with a status of 403 () @ https://app1.hyeonworks.com/logout:0
 [   23950ms] [ERROR] Failed to load resource: the server responded with a status of 403 () @ https://app1.hyeonworks.com/logout:0
@@ -0,0 +1,2 @@
 [     275ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=G2-BDWkehNWO7hGwhYCxXBVRKZ6AomLIrSLBtIXr0Gw%3A%2Fapi%2Fecho&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=4155f58e-6a58-e47b-93bd-7e2b625c2b91.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0
 [     408ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=Da-7OcMB4f7vyHgr-6CqrTtJpmj1R_SfRfcE3CUJNzE%3A%2Ffavicon.ico&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=96d66247-91b0-0cc1-89dc-e527c2b69bf2.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0
@@ -0,0 +1,2 @@
 [     266ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=TZnQvjIWCEySrf4PMg2WLVFoOfkyOJWB58f2LGjVfpo%3A%2Fapi%2Fecho&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=8ae913a1-2647-0ed9-625e-3d80e1565024.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0
 [     416ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=uAYwZp59ncz95XjkJXAlIgsT7oksBQBViiQS07t2eow%3A%2Ffavicon.ico&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=7b7fc816-0b27-93a0-83b8-656488813253.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0
@@ -0,0 +1,2 @@
 [     287ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=0EOFj1PoLyPil0dgukpi7zKW4JKnGZTP9Wj6EhTR-lw%3A%2Fapi%2Fecho&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=d13cc206-133f-00a9-9908-599988c4d7cf.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0
 [     457ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=kbYC5O4_ELsoQFw85vyYfgWEqlI2yWImB4rmelbmSTM%3A%2Ffavicon.ico&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=91f9fde9-f376-b6f3-4622-a1ba674cc4fd.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0
@@ -0,0 +1 @@
 [     307ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1 @@
 [     261ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1 @@
 [     882ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1 @@
 [     178ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1,2 @@
 [   19340ms] [ERROR] Failed to load resource: the server responded with a status of 403 () @ https://app2.hyeonworks.com/oauth2/callback?state=rKipZCUv8W5a-xgYheJbjBsInoD5Il1AaF1RlM_RB2s%3A%2Fapi%2Fecho&session_state=Mw52KcQijFB9Bq4rN-C4SF5Y&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=f9a4835a-2af3-b886-bd04-10b5347ee8d2.Mw52KcQijFB9Bq4rN-C4SF5Y.80431dbc-af81-4673-9790-ad06d1570b2e:0
 [   20374ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1 @@
 [     210ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1 @@
 [     423ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0
@@ -0,0 +1,8 @@
 [    1127ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    2377ms] [WARNING] <meta name="apple-mobile-web-app-capable" content="yes"> is deprecated. Please include <meta name="mobile-web-app-capable" content="yes"> @ https://app2.hyeonworks.com/explore?schemaVersion=1&panes=%7B%22h4a%22%3A%7B%22datasource%22%3A%22PBFA97CFB590B2093%22%2C%22queries%22%3A%5B%7B%22refId%22%3A%22A%22%2C%22expr%22%3A%22vendor_cluster_size%22%2C%22range%22%3Atrue%2C%22instant%22%3Afalse%2C%22editorMode%22%3A%22code%22%2C%22legendFormat%22%3A%22cluster_size+%7B%7Bpod%7D%7D%22%2C%22datasource%22%3A%7B%22type%22%3A%22prometheus%22%2C%22uid%22%3A%22PBFA97CFB590B2093%22%7D%7D%2C%7B%22refId%22%3A%22B%22%2C%22expr%22%3A%22up%7Bjob%3D%5C%22keycloak%5C%22%7D%22%2C%22range%22%3Atrue%2C%22instant%22%3Afalse%2C%22editorMode%22%3A%22code%22%2C%22legendFormat%22%3A%22up+%7B%7Bpod%7D%7D%22%2C%22datasource%22%3A%7B%22type%22%3A%22prometheus%22%2C%22uid%22%3A%22PBFA97CFB590B2093%22%7D%7D%5D%2C%22range%22%3A%7B%22from%22%3A%22now-30m%22%2C%22to%22%3A%22now%22%7D%7D%7D&orgId=1:0
 [    2472ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    3501ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    5119ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    8511ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   14956ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   28065ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
@@ -0,0 +1,10 @@
 [    1362ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    1874ms] [WARNING] <meta name="apple-mobile-web-app-capable" content="yes"> is deprecated. Please include <meta name="mobile-web-app-capable" content="yes"> @ https://app2.hyeonworks.com/explore?schemaVersion=1&orgId=1&panes=%7B%22a%22%3A%7B%22datasource%22%3A%22PBFA97CFB590B2093%22%2C%22queries%22%3A%5B%7B%22refId%22%3A%22A%22%2C%22expr%22%3A%22vendor_cluster_size%22%2C%22range%22%3Atrue%2C%22instant%22%3Afalse%2C%22editorMode%22%3A%22code%22%2C%22legendFormat%22%3A%22cluster_size%20%7B%7Bpod%7D%7D%22%2C%22datasource%22%3A%7B%22type%22%3A%22prometheus%22%2C%22uid%22%3A%22PBFA97CFB590B2093%22%7D%7D%2C%7B%22refId%22%3A%22B%22%2C%22expr%22%3A%22up%7Bjob%3D%5C%22keycloak%5C%22%7D%22%2C%22range%22%3Atrue%2C%22instant%22%3Afalse%2C%22editorMode%22%3A%22code%22%2C%22legendFormat%22%3A%22up%20%7B%7Bpod%7D%7D%22%2C%22datasource%22%3A%7B%22type%22%3A%22prometheus%22%2C%22uid%22%3A%22PBFA97CFB590B2093%22%7D%7D%5D%2C%22range%22%3A%7B%22from%22%3A%221788502680000%22%2C%22to%22%3A%221788503520000%22%7D%7D%7D:0
 [    2907ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    3998ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    6253ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [    9426ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   12495ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   24486ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   31338ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   46196ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
@@ -0,0 +1,106 @@
 [    1319ms] [WARNING] <meta name="apple-mobile-web-app-capable" content="yes"> is deprecated. Please include <meta name="mobile-web-app-capable" content="yes"> @ https://app2.hyeonworks.com/explore?schemaVersion=1&orgId=1&panes=%7B%22a%22%3A%7B%22datasource%22%3A%22PBFA97CFB590B2093%22%2C%22queries%22%3A%5B%7B%22refId%22%3A%22A%22%2C%22expr%22%3A%22vendor_cluster_size%22%2C%22range%22%3Atrue%2C%22instant%22%3Afalse%2C%22editorMode%22%3A%22code%22%2C%22legendFormat%22%3A%22cluster_size%20%7B%7Bpod%7D%7D%22%2C%22datasource%22%3A%7B%22type%22%3A%22prometheus%22%2C%22uid%22%3A%22PBFA97CFB590B2093%22%7D%7D%2C%7B%22refId%22%3A%22B%22%2C%22expr%22%3A%22vendor_statistics_approximate_entries_unique%7Bcache%3D%5C%22sessions%5C%22%7D%22%2C%22range%22%3Atrue%2C%22instant%22%3Afalse%2C%22editorMode%22%3A%22code%22%2C%22legendFormat%22%3A%22sessions%20%5Cuce90%5Cuc2dc%20%7B%7Bpod%7D%7D%22%2C%22datasource%22%3A%7B%22type%22%3A%22prometheus%22%2C%22uid%22%3A%22PBFA97CFB590B2093%22%7D%7D%5D%2C%22range%22%3A%7B%22from%22%3A%221788497040000%22%2C%22to%22%3A%221788499080000%22%7D%7D%7D:0
 [    5941ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   11107ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   14234ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   17005ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   23049ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   30565ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   44135ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   54992ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   63653ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   70658ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [   90768ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  105475ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  114995ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  125443ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  137321ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  147252ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  167227ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  179100ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  187598ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  207362ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  213255ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  230544ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  248833ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  257549ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  262324ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  274443ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  294124ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  310689ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  312049ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  327025ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  339933ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  342391ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  362305ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  370693ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  378685ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  397930ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  414007ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  419130ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  420355ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  428557ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  442088ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  445041ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  446677ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  460087ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  462505ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  463673ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  482762ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  495123ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  513442ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  516414ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  536581ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  543441ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  563624ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  580510ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  588408ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  594209ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  604166ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  605295ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  621987ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  639705ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  653320ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  660911ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  678105ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  693662ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  703089ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  704712ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  719727ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  725514ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  730429ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  735135ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  736677ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  751626ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  767197ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  782052ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  797775ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  803343ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  822168ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  828683ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  845938ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  865903ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  883116ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  894375ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  898471ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  914886ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  933184ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  953353ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  963902ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  982846ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [  998975ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1000721ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1003229ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1009879ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1016334ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1023805ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1043684ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1049467ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1059107ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1075856ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1076956ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1094159ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1102825ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1116077ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1134809ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1136553ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
 [ 1141191ms] [ERROR] WebSocket connection to 'wss://app2.hyeonworks.com/api/live/ws' failed: Error during WebSocket handshake: Unexpected response code: 400 @ https://app2.hyeonworks.com/public/build/1518.a3f1f690c084a37f01c7.js:362
@@ -0,0 +1 @@
 - generic [active] [ref=f35e1]: "{\"pattern\":\"AP3-backend-for-frontend\",\"principal\":\"labuser\",\"accessTokenStoredOnServer\":false,\"refreshTokenStoredOnServer\":false,\"browserTokenCount\":0,\"csrfProtectionEnabled\":true}"
@@ -0,0 +1,7 @@
 - main [ref=f36e2]:
  - heading "AP3 · Backend-for-Frontend" [level=1] [ref=f36e3]
  - paragraph [ref=f36e4]: 브라우저에는 OAuth token이 전혀 전달되지 않습니다. HttpOnly session cookie로 BFF만 호출하고, BFF가 서버 보관 access token을 Resource Server 요청에 붙입니다.
  - button "Keycloak 로그인" [ref=f36e5] [cursor=pointer]
  - button "token 경계 확인" [ref=f36e6] [cursor=pointer]
  - button "BFF 경유 API 호출" [ref=f36e7] [cursor=pointer]
  - button "CSRF token으로 상태 변경" [ref=f36e8] [cursor=pointer]
@@ -0,0 +1 @@
 - generic [active] [ref=f37e1]: "{\"pattern\":\"AP3-backend-for-frontend\",\"principal\":\"labuser\",\"accessTokenStoredOnServer\":true,\"refreshTokenStoredOnServer\":true,\"browserTokenCount\":0,\"csrfProtectionEnabled\":true}"
@@ -0,0 +1,7 @@
 - main [ref=f38e2]:
  - heading "AP3 · Backend-for-Frontend" [level=1] [ref=f38e3]
  - paragraph [ref=f38e4]: 브라우저에는 OAuth token이 전혀 전달되지 않습니다. HttpOnly session cookie로 BFF만 호출하고, BFF가 서버 보관 access token을 Resource Server 요청에 붙입니다.
  - button "Keycloak 로그인" [ref=f38e5] [cursor=pointer]
  - button "token 경계 확인" [ref=f38e6] [cursor=pointer]
  - button "BFF 경유 API 호출" [ref=f38e7] [cursor=pointer]
  - button "CSRF token으로 상태 변경" [ref=f38e8] [cursor=pointer]
@@ -0,0 +1,7 @@
 - main [ref=f39e2]:
  - heading "AP3 · Backend-for-Frontend" [level=1] [ref=f39e3]
  - paragraph [ref=f39e4]: 브라우저에는 OAuth token이 전혀 전달되지 않습니다. HttpOnly session cookie로 BFF만 호출하고, BFF가 서버 보관 access token을 Resource Server 요청에 붙입니다.
  - button "Keycloak 로그인" [ref=f39e5] [cursor=pointer]
  - button "token 경계 확인" [ref=f39e6] [cursor=pointer]
  - button "BFF 경유 API 호출" [ref=f39e7] [cursor=pointer]
  - button "CSRF token으로 상태 변경" [ref=f39e8] [cursor=pointer]
@@ -0,0 +1,4 @@
 - generic [active] [ref=f40e1]:
  - heading "502 Bad Gateway" [level=1] [ref=f40e3]
  - separator [ref=f40e4]
  - generic [ref=f40e5]: nginx/1.30.4
@@ -0,0 +1,4 @@
 - generic [active] [ref=f41e1]:
  - heading "502 Bad Gateway" [level=1] [ref=f41e3]
  - separator [ref=f41e4]
  - generic [ref=f41e5]: nginx/1.30.4
@@ -0,0 +1,4 @@
 - generic [active] [ref=f42e1]:
  - heading "502 Bad Gateway" [level=1] [ref=f42e3]
  - separator [ref=f42e4]
  - generic [ref=f42e5]: nginx/1.30.4
@@ -0,0 +1 @@
 - generic [active] [ref=f43e1]: "{ \"headers\" : { \"host\" : [ \"app2.hyeonworks.com\" ], \"user-agent\" : [ \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36\" ], \"accept\" : [ \"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\" ], \"accept-encoding\" : [ \"gzip, deflate, br, zstd\" ], \"accept-language\" : [ \"en-US,en;q=0.9\" ], \"cookie\" : [ \"grafana_session=60c3e7ae41ffc00665f4a2c377def399; grafana_session_expiry=1788497124; _oauth2_proxy=djIuWDI5aGRYUm9NbDl3Y205NGVTMWlNall4TVRGbVltUXhabVJoWWpOaFpUSXhPREpsTWpnM01EQXhZakF5WVEuTk81VE82RHRod2NWZWstaHpPZVg1Zw==|1788500470|iPSRUlwHDB0XgC6sUdU4dq1EHq9WQDPYrDoezajKVUA=\" ], \"priority\" : [ \"u=0, i\" ], \"sec-ch-ua\" : [ \"\\\"Chromium\\\";v=\\\"152\\\", \\\"Not?A_Brand\\\";v=\\\"24\\\", \\\"Google Chrome\\\";v=\\\"152\\\"\" ], \"sec-ch-ua-mobile\" : [ \"?0\" ], \"sec-ch-ua-platform\" : [ \"\\\"Linux\\\"\" ], \"sec-fetch-dest\" : [ \"document\" ], \"sec-fetch-mode\" : [ \"navigate\" ], \"sec-fetch-site\" : [ \"none\" ], \"sec-fetch-user\" : [ \"?1\" ], \"upgrade-insecure-requests\" : [ \"1\" ], \"x-forwarded-email\" : [ \"labuser@example.com\" ], \"x-forwarded-host\" : [ \"app2.hyeonworks.com\" ], \"x-forwarded-port\" : [ \"443\" ], \"x-forwarded-preferred-username\" : [ \"labuser\" ], \"x-forwarded-proto\" : [ \"https\" ], \"x-forwarded-server\" : [ \"traefik-5d6fcf895-wpfhr\" ], \"x-forwarded-user\" : [ \"27df5ea9-8703-4ec5-badd-d972c583e1ff\" ], \"x-real-ip\" : [ \"100.123.124.30\" ] }, \"remoteAddr\" : \"100.123.124.30\", \"localAddr\" : \"10.42.0.53\", \"scheme\" : \"https\", \"secure\" : true, \"serverName\" : \"app2.hyeonworks.com\", \"serverPort\" : 443, \"requestUrl\" : \"https://app2.hyeonworks.com/api/echo\" }"
@@ -0,0 +1 @@
 - generic [active] [ref=f44e1]: "{ \"headers\" : { \"host\" : [ \"app2.hyeonworks.com\" ], \"user-agent\" : [ \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36\" ], \"accept\" : [ \"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\" ], \"accept-encoding\" : [ \"gzip, deflate, br, zstd\" ], \"accept-language\" : [ \"en-US,en;q=0.9\" ], \"cookie\" : [ \"grafana_session=60c3e7ae41ffc00665f4a2c377def399; grafana_session_expiry=1788497124; _oauth2_proxy=djIuWDI5aGRYUm9NbDl3Y205NGVTMDVOemhrWm1GbFptSmtZV1JqWTJJNU5tTTNZbVV4TmpJMVpHSmhOVFl4TmcucmoxSnJPYjJKOW1ZV191aXVWa2FCZw==|1788500538|RoiStOeQcIDldxB3cckyO-OAiMgBjBfw5gOSvUsgTFU=\" ], \"priority\" : [ \"u=0, i\" ], \"sec-ch-ua\" : [ \"\\\"Chromium\\\";v=\\\"152\\\", \\\"Not?A_Brand\\\";v=\\\"24\\\", \\\"Google Chrome\\\";v=\\\"152\\\"\" ], \"sec-ch-ua-mobile\" : [ \"?0\" ], \"sec-ch-ua-platform\" : [ \"\\\"Linux\\\"\" ], \"sec-fetch-dest\" : [ \"document\" ], \"sec-fetch-mode\" : [ \"navigate\" ], \"sec-fetch-site\" : [ \"none\" ], \"sec-fetch-user\" : [ \"?1\" ], \"upgrade-insecure-requests\" : [ \"1\" ], \"x-forwarded-email\" : [ \"labuser@example.com\" ], \"x-forwarded-host\" : [ \"app2.hyeonworks.com\" ], \"x-forwarded-port\" : [ \"443\" ], \"x-forwarded-preferred-username\" : [ \"labuser\" ], \"x-forwarded-proto\" : [ \"https\" ], \"x-forwarded-server\" : [ \"traefik-5d6fcf895-wpfhr\" ], \"x-forwarded-user\" : [ \"27df5ea9-8703-4ec5-badd-d972c583e1ff\" ], \"x-real-ip\" : [ \"100.123.124.30\" ] }, \"remoteAddr\" : \"100.123.124.30\", \"localAddr\" : \"10.42.1.132\", \"scheme\" : \"https\", \"secure\" : true, \"serverName\" : \"app2.hyeonworks.com\", \"serverPort\" : 443, \"requestUrl\" : \"https://app2.hyeonworks.com/api/echo\" }"
@@ -0,0 +1,16 @@
 - generic [ref=f45e3]:
  - banner [ref=f45e4]:
    - generic [ref=f45e5]: keycloak-patterns
  - main [ref=f45e6]:
    - heading "Sign in to your account" [level=1] [ref=f45e8]
    - generic [ref=f45e12]:
      - generic [ref=f45e13]:
        - generic [ref=f45e14]: Username or email
        - textbox "Username or email" [active] [ref=f45e17]
      - generic [ref=f45e18]:
        - generic [ref=f45e19]: Password
        - generic [ref=f45e21]:
          - textbox "Password" [ref=f45e24]
          - button "Show password" [ref=f45e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f45e27]: 
      - button "Sign In" [ref=f45e30] [cursor=pointer]
@@ -0,0 +1,7 @@
 - main [ref=f46e2]:
  - heading "AP3 · Backend-for-Frontend" [level=1] [ref=f46e3]
  - paragraph [ref=f46e4]: 브라우저에는 OAuth token이 전혀 전달되지 않습니다. HttpOnly session cookie로 BFF만 호출하고, BFF가 서버 보관 access token을 Resource Server 요청에 붙입니다.
  - button "Keycloak 로그인" [ref=f46e5] [cursor=pointer]
  - button "token 경계 확인" [ref=f46e6] [cursor=pointer]
  - button "BFF 경유 API 호출" [ref=f46e7] [cursor=pointer]
  - button "CSRF token으로 상태 변경" [ref=f46e8] [cursor=pointer]
@@ -0,0 +1 @@
 - generic [active] [ref=f47e1]: "{ \"headers\" : { \"host\" : [ \"app2.hyeonworks.com\" ], \"user-agent\" : [ \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36\" ], \"accept\" : [ \"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\" ], \"accept-encoding\" : [ \"gzip, deflate, br, zstd\" ], \"accept-language\" : [ \"en-US,en;q=0.9\" ], \"cookie\" : [ \"grafana_session=60c3e7ae41ffc00665f4a2c377def399; grafana_session_expiry=1788497124; _oauth2_proxy=djIuWDI5aGRYUm9NbDl3Y205NGVTMDJZakF5T0dFM01HWTJPV000WmpCa1lUazVOalpsWWpNMk9UY3laR1ptTWcuWmpUamNTbGxVSHV1RmJjQ2ZRd2lsUQ==|1788500797|17Hbo3RDtzOldnLZx2xOt3e34lHo_v0yqRNdqdKUx-g=\" ], \"priority\" : [ \"u=0, i\" ], \"sec-ch-ua\" : [ \"\\\"Chromium\\\";v=\\\"152\\\", \\\"Not?A_Brand\\\";v=\\\"24\\\", \\\"Google Chrome\\\";v=\\\"152\\\"\" ], \"sec-ch-ua-mobile\" : [ \"?0\" ], \"sec-ch-ua-platform\" : [ \"\\\"Linux\\\"\" ], \"sec-fetch-dest\" : [ \"document\" ], \"sec-fetch-mode\" : [ \"navigate\" ], \"sec-fetch-site\" : [ \"none\" ], \"sec-fetch-user\" : [ \"?1\" ], \"upgrade-insecure-requests\" : [ \"1\" ], \"x-forwarded-email\" : [ \"labuser@example.com\" ], \"x-forwarded-host\" : [ \"app2.hyeonworks.com\" ], \"x-forwarded-port\" : [ \"443\" ], \"x-forwarded-preferred-username\" : [ \"labuser\" ], \"x-forwarded-proto\" : [ \"https\" ], \"x-forwarded-server\" : [ \"traefik-5d6fcf895-wpfhr\" ], \"x-forwarded-user\" : [ \"27df5ea9-8703-4ec5-badd-d972c583e1ff\" ], \"x-real-ip\" : [ \"100.123.124.30\" ] }, \"remoteAddr\" : \"100.123.124.30\", \"localAddr\" : \"10.42.0.53\", \"scheme\" : \"https\", \"secure\" : true, \"serverName\" : \"app2.hyeonworks.com\", \"serverPort\" : 443, \"requestUrl\" : \"https://app2.hyeonworks.com/api/echo\" }"
@@ -0,0 +1 @@
 - generic [active] [ref=f48e1]: "{\"pattern\":\"AP3-backend-for-frontend\",\"principal\":\"labuser\",\"accessTokenStoredOnServer\":true,\"refreshTokenStoredOnServer\":true,\"browserTokenCount\":0,\"csrfProtectionEnabled\":true}"
@@ -0,0 +1 @@
 - generic [active] [ref=f49e1]: "{ \"headers\" : { \"host\" : [ \"app2.hyeonworks.com\" ], \"user-agent\" : [ \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36\" ], \"accept\" : [ \"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\" ], \"accept-encoding\" : [ \"gzip, deflate, br, zstd\" ], \"accept-language\" : [ \"en-US,en;q=0.9\" ], \"cookie\" : [ \"grafana_session=60c3e7ae41ffc00665f4a2c377def399; grafana_session_expiry=1788497124; _oauth2_proxy=djIuWDI5aGRYUm9NbDl3Y205NGVTMDJZakF5T0dFM01HWTJPV000WmpCa1lUazVOalpsWWpNMk9UY3laR1ptTWcuWmpUamNTbGxVSHV1RmJjQ2ZRd2lsUQ==|1788500797|17Hbo3RDtzOldnLZx2xOt3e34lHo_v0yqRNdqdKUx-g=\" ], \"priority\" : [ \"u=0, i\" ], \"sec-ch-ua\" : [ \"\\\"Chromium\\\";v=\\\"152\\\", \\\"Not?A_Brand\\\";v=\\\"24\\\", \\\"Google Chrome\\\";v=\\\"152\\\"\" ], \"sec-ch-ua-mobile\" : [ \"?0\" ], \"sec-ch-ua-platform\" : [ \"\\\"Linux\\\"\" ], \"sec-fetch-dest\" : [ \"document\" ], \"sec-fetch-mode\" : [ \"navigate\" ], \"sec-fetch-site\" : [ \"none\" ], \"sec-fetch-user\" : [ \"?1\" ], \"upgrade-insecure-requests\" : [ \"1\" ], \"x-forwarded-email\" : [ \"labuser@example.com\" ], \"x-forwarded-host\" : [ \"app2.hyeonworks.com\" ], \"x-forwarded-port\" : [ \"443\" ], \"x-forwarded-preferred-username\" : [ \"labuser\" ], \"x-forwarded-proto\" : [ \"https\" ], \"x-forwarded-server\" : [ \"traefik-5d6fcf895-wpfhr\" ], \"x-forwarded-user\" : [ \"27df5ea9-8703-4ec5-badd-d972c583e1ff\" ], \"x-real-ip\" : [ \"100.123.124.30\" ] }, \"remoteAddr\" : \"100.123.124.30\", \"localAddr\" : \"10.42.0.53\", \"scheme\" : \"https\", \"secure\" : true, \"serverName\" : \"app2.hyeonworks.com\", \"serverPort\" : 443, \"requestUrl\" : \"https://app2.hyeonworks.com/api/echo\" }"
@@ -0,0 +1 @@
 - generic [active] [ref=f50e1]: "{\"pattern\":\"AP3-backend-for-frontend\",\"principal\":\"labuser\",\"accessTokenStoredOnServer\":true,\"refreshTokenStoredOnServer\":true,\"browserTokenCount\":0,\"csrfProtectionEnabled\":true}"
@@ -0,0 +1,16 @@
 - generic [ref=f51e3]:
  - banner [ref=f51e4]:
    - generic [ref=f51e5]: keycloak-patterns
  - main [ref=f51e6]:
    - heading "Sign in to your account" [level=1] [ref=f51e8]
    - generic [ref=f51e12]:
      - generic [ref=f51e13]:
        - generic [ref=f51e14]: Username or email
        - textbox "Username or email" [active] [ref=f51e17]
      - generic [ref=f51e18]:
        - generic [ref=f51e19]: Password
        - generic [ref=f51e21]:
          - textbox "Password" [ref=f51e24]
          - button "Show password" [ref=f51e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f51e27]: 
      - button "Sign In" [ref=f51e30] [cursor=pointer]
@@ -0,0 +1,7 @@
 - main [ref=f52e2]:
  - heading "AP3 · Backend-for-Frontend" [level=1] [ref=f52e3]
  - paragraph [ref=f52e4]: 브라우저에는 OAuth token이 전혀 전달되지 않습니다. HttpOnly session cookie로 BFF만 호출하고, BFF가 서버 보관 access token을 Resource Server 요청에 붙입니다.
  - button "Keycloak 로그인" [ref=f52e5] [cursor=pointer]
  - button "token 경계 확인" [ref=f52e6] [cursor=pointer]
  - button "BFF 경유 API 호출" [ref=f52e7] [cursor=pointer]
  - button "CSRF token으로 상태 변경" [ref=f52e8] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f53e3]:
  - banner [ref=f53e4]:
    - generic [ref=f53e5]: keycloak-patterns
  - main [ref=f53e6]:
    - heading "Sign in to your account" [level=1] [ref=f53e8]
    - generic [ref=f53e12]:
      - generic [ref=f53e13]:
        - generic [ref=f53e14]: Username or email
        - textbox "Username or email" [ref=f53e17]
      - generic [ref=f53e18]:
        - generic [ref=f53e19]: Password
        - generic [ref=f53e21]:
          - textbox "Password" [ref=f53e24]
          - button "Show password" [ref=f53e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f53e27]: 
      - button "Sign In" [ref=f53e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f53e3]:
  - banner [ref=f53e4]:
    - generic [ref=f53e5]: keycloak-patterns
  - main [ref=f53e6]:
    - heading "Sign in to your account" [level=1] [ref=f53e8]
    - generic [ref=f53e12]:
      - generic [ref=f53e13]:
        - generic [ref=f53e14]: Username or email
        - textbox "Username or email" [ref=f53e17]: labuser
      - generic [ref=f53e18]:
        - generic [ref=f53e19]: Password
        - generic [ref=f53e21]:
          - textbox "Password" [active] [ref=f53e24]: labpass
          - button "Show password" [ref=f53e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f53e27]: 
      - button "Sign In" [ref=f53e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f53e3]:
  - banner [ref=f53e4]:
    - generic [ref=f53e5]: keycloak-patterns
  - main [ref=f53e6]:
    - heading "Sign in to your account" [level=1] [ref=f53e8]
    - generic [ref=f53e12]:
      - generic [ref=f53e13]:
        - generic [ref=f53e14]: Username or email
        - textbox "Username or email" [ref=f53e17]: labuser
      - generic [ref=f53e18]:
        - generic [ref=f53e19]: Password
        - generic [ref=f53e21]:
          - textbox "Password" [active] [ref=f53e24]: labpass
          - button "Show password" [ref=f53e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f53e27]: 
      - button "Sign In" [ref=f53e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f53e3]:
  - banner [ref=f53e4]:
    - generic [ref=f53e5]: keycloak-patterns
  - main [ref=f53e6]:
    - heading "Sign in to your account" [level=1] [ref=f53e8]
    - generic [ref=f53e12]:
      - generic [ref=f53e13]:
        - generic [ref=f53e14]: Username or email
        - textbox "Username or email" [ref=f53e17]: labuser
      - generic [ref=f53e18]:
        - generic [ref=f53e19]: Password
        - generic [ref=f53e21]:
          - textbox "Password" [active] [ref=f53e24]: labpass
          - button "Show password" [ref=f53e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f53e27]: 
      - button "Sign In" [ref=f53e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f54e3]:
  - banner [ref=f54e4]:
    - generic [ref=f54e5]: keycloak-patterns
  - main [ref=f54e6]:
    - heading "Sign in to your account" [level=1] [ref=f54e8]
    - generic [ref=f54e12]:
      - generic [ref=f54e13]:
        - generic [ref=f54e14]: Username or email
        - textbox "Username or email" [ref=f54e17]
      - generic [ref=f54e18]:
        - generic [ref=f54e19]: Password
        - generic [ref=f54e21]:
          - textbox "Password" [ref=f54e24]
          - button "Show password" [ref=f54e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f54e27]: 
      - button "Sign In" [ref=f54e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f54e3]:
  - banner [ref=f54e4]:
    - generic [ref=f54e5]: keycloak-patterns
  - main [ref=f54e6]:
    - heading "Sign in to your account" [level=1] [ref=f54e8]
    - generic [ref=f54e12]:
      - generic [ref=f54e13]:
        - generic [ref=f54e14]: Username or email
        - textbox "Username or email" [ref=f54e17]: labuser
      - generic [ref=f54e18]:
        - generic [ref=f54e19]: Password
        - generic [ref=f54e21]:
          - textbox "Password" [active] [ref=f54e24]: labpass
          - button "Show password" [ref=f54e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f54e27]: 
      - button "Sign In" [ref=f54e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f55e3]:
  - banner [ref=f55e4]:
    - generic [ref=f55e5]: keycloak-patterns
  - main [ref=f55e6]:
    - heading "Sign in to your account" [level=1] [ref=f55e8]
    - generic [ref=f55e12]:
      - generic [ref=f55e13]:
        - generic [ref=f55e14]: Username or email
        - textbox "Username or email" [ref=f55e17]
      - generic [ref=f55e18]:
        - generic [ref=f55e19]: Password
        - generic [ref=f55e21]:
          - textbox "Password" [ref=f55e24]
          - button "Show password" [ref=f55e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f55e27]: 
      - button "Sign In" [ref=f55e30] [cursor=pointer]
@@ -0,0 +1,16 @@
 - generic [ref=f55e3]:
  - banner [ref=f55e4]:
    - generic [ref=f55e5]: keycloak-patterns
  - main [ref=f55e6]:
    - heading "Sign in to your account" [level=1] [ref=f55e8]
    - generic [ref=f55e12]:
      - generic [ref=f55e13]:
        - generic [ref=f55e14]: Username or email
        - textbox "Username or email" [ref=f55e17]: labuser
      - generic [ref=f55e18]:
        - generic [ref=f55e19]: Password
        - generic [ref=f55e21]:
          - textbox "Password" [ref=f55e24]: labpass
          - button "Show password" [ref=f55e26] [cursor=pointer]:
            - generic [aria-hidden] [ref=f55e27]: 
      - button "Sign In" [ref=f55e30] [cursor=pointer]
@@ -0,0 +1,17 @@
 - generic [ref=f56e1]:
  - generic [ref=f56e3]:
    - generic [ref=f56e4]: "403"
    - heading "Forbidden" [level=1] [ref=f56e6]
    - generic [ref=f56e8]:
      - paragraph [ref=f56e9]: More Info
      - generic [ref=f56e10] [cursor=pointer]: 
    - separator [ref=f56e12]
    - generic [ref=f56e13]:
      - button "Go back" [ref=f56e16] [cursor=pointer]
      - button "Sign in" [ref=f56e19] [cursor=pointer]
  - contentinfo [ref=f56e20]:
    - paragraph [ref=f56e22]:
      - text: Secured with
      - link "OAuth2 Proxy" [ref=f56e23] [cursor=pointer]:
        - /url: https://github.com/oauth2-proxy/oauth2-proxy#oauth2_proxy
      - text: version v7.7.1
@@ -0,0 +1 @@
 - generic [ref=f57e1]: "{ \"headers\" : { \"host\" : [ \"app2.hyeonworks.com\" ], \"user-agent\" : [ \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36\" ], \"accept\" : [ \"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\" ], \"accept-encoding\" : [ \"gzip, deflate, br, zstd\" ], \"accept-language\" : [ \"en-US,en;q=0.9\" ], \"cookie\" : [ \"grafana_session=60c3e7ae41ffc00665f4a2c377def399; grafana_session_expiry=1788497124; _oauth2_proxy=djIuWDI5aGRYUm9NbDl3Y205NGVTMDNZMkZrTUdZM01tRmlZekkwWldFell6a3lOREJpTW1KaE5UZGpOVEJoWWcuZVVmckp5VHRqY1VsXzdiV1hiX3hwdw==|1788503135|yDSo7VdgRSlvoVfj9raHPClKTlQiWDg7FauLfoUayw4=\" ], \"priority\" : [ \"u=0, i\" ], \"sec-ch-ua\" : [ \"\\\"Chromium\\\";v=\\\"152\\\", \\\"Not?A_Brand\\\";v=\\\"24\\\", \\\"Google Chrome\\\";v=\\\"152\\\"\" ], \"sec-ch-ua-mobile\" : [ \"?0\" ], \"sec-ch-ua-platform\" : [ \"\\\"Linux\\\"\" ], \"sec-fetch-dest\" : [ \"document\" ], \"sec-fetch-mode\" : [ \"navigate\" ], \"sec-fetch-site\" : [ \"none\" ], \"sec-fetch-user\" : [ \"?1\" ], \"upgrade-insecure-requests\" : [ \"1\" ], \"x-forwarded-email\" : [ \"labuser@example.com\" ], \"x-forwarded-host\" : [ \"app2.hyeonworks.com\" ], \"x-forwarded-port\" : [ \"443\" ], \"x-forwarded-preferred-username\" : [ \"labuser\" ], \"x-forwarded-proto\" : [ \"https\" ], \"x-forwarded-server\" : [ \"traefik-5d6fcf895-wpfhr\" ], \"x-forwarded-user\" : [ \"27df5ea9-8703-4ec5-badd-d972c583e1ff\" ], \"x-real-ip\" : [ \"100.123.124.30\" ] }, \"remoteAddr\" : \"100.123.124.30\", \"localAddr\" : \"10.42.0.53\", \"scheme\" : \"https\", \"secure\" : true, \"serverName\" : \"app2.hyeonworks.com\", \"serverPort\" : 443, \"requestUrl\" : \"https://app2.hyeonworks.com/api/echo\" }"
@@ -0,0 +1 @@
 - generic [ref=f58e1]: "{ \"headers\" : { \"host\" : [ \"app2.hyeonworks.com\" ], \"user-agent\" : [ \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36\" ], \"accept\" : [ \"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\" ], \"accept-encoding\" : [ \"gzip, deflate, br, zstd\" ], \"accept-language\" : [ \"en-US,en;q=0.9\" ], \"cookie\" : [ \"grafana_session=60c3e7ae41ffc00665f4a2c377def399; grafana_session_expiry=1788497124; _oauth2_proxy=djIuWDI5aGRYUm9NbDl3Y205NGVTMHpabUV5TVdKaVpEa3lOemRrTlRFMU9USTBaV00wWWpGaE16bGhNak0zT1EuN2tTa3dnWUdISDkwMGFSSTVOSUFFUQ==|1788503202|snWKU5IRfRLoD9-bXEodGjEgfHeAw8PQaoHnecpFH90=\" ], \"priority\" : [ \"u=0, i\" ], \"sec-ch-ua\" : [ \"\\\"Chromium\\\";v=\\\"152\\\", \\\"Not?A_Brand\\\";v=\\\"24\\\", \\\"Google Chrome\\\";v=\\\"152\\\"\" ], \"sec-ch-ua-mobile\" : [ \"?0\" ], \"sec-ch-ua-platform\" : [ \"\\\"Linux\\\"\" ], \"sec-fetch-dest\" : [ \"document\" ], \"sec-fetch-mode\" : [ \"navigate\" ], \"sec-fetch-site\" : [ \"none\" ], \"sec-fetch-user\" : [ \"?1\" ], \"upgrade-insecure-requests\" : [ \"1\" ], \"x-forwarded-email\" : [ \"changed-labuser@example.com\" ], \"x-forwarded-host\" : [ \"app2.hyeonworks.com\" ], \"x-forwarded-port\" : [ \"443\" ], \"x-forwarded-preferred-username\" : [ \"labuser\" ], \"x-forwarded-proto\" : [ \"https\" ], \"x-forwarded-server\" : [ \"traefik-5d6fcf895-wpfhr\" ], \"x-forwarded-user\" : [ \"27df5ea9-8703-4ec5-badd-d972c583e1ff\" ], \"x-real-ip\" : [ \"100.123.124.30\" ] }, \"remoteAddr\" : \"100.123.124.30\", \"localAddr\" : \"10.42.1.132\", \"scheme\" : \"https\", \"secure\" : true, \"serverName\" : \"app2.hyeonworks.com\", \"serverPort\" : 443, \"requestUrl\" : \"https://app2.hyeonworks.com/api/echo\" }"
@@ -0,0 +1,175 @@
 - generic [ref=f59e1]:
  - generic [ref=f59e4]:
    - link "Skip to main content" [ref=f59e5] [cursor=pointer]:
      - /url: "#pageContent"
    - banner [ref=f59e7]:
      - generic [ref=f59e8]:
        - link [ref=f59e10] [cursor=pointer]:
          - /url: /
          - img "Grafana" [ref=f59e11]
        - generic [ref=f59e14]:
          - button "Search or jump to..." [ref=f59e18] [cursor=pointer]
          - generic [ref=f59e19]: ctrl+k
        - generic [ref=f59e23]:
          - button "New" [ref=f59e24] [cursor=pointer]
          - button "Help" [ref=f59e30] [cursor=pointer]
          - button "News" [ref=f59e33] [cursor=pointer]
          - button "Profile" [ref=f59e36] [cursor=pointer]:
            - img "User avatar" [ref=f59e37]
      - generic [ref=f59e38]:
        - button "Open menu" [ref=f59e40] [cursor=pointer]
        - navigation "Breadcrumbs" [ref=f59e43]:
          - list [ref=f59e44]:
            - listitem [ref=f59e45]:
              - link "Home" [ref=f59e46] [cursor=pointer]:
                - /url: /
            - listitem [ref=f59e50]:
              - link "Explore" [ref=f59e51] [cursor=pointer]:
                - /url: /explore
            - listitem [ref=f59e55]:
              - generic "Prometheus" [ref=f59e56]
        - generic [ref=f59e57]:
          - generic [ref=f59e60]:
            - button "Copy shortened URL" [ref=f59e61] [cursor=pointer]
            - button "Open copy link options" [ref=f59e64] [cursor=pointer]
          - button "Toggle top search bar" [ref=f59e68] [cursor=pointer]
    - main [ref=f59e74]:
      - generic [ref=f59e76]:
        - heading "Explore" [level=1] [ref=f59e77]
        - generic [ref=f59e82]:
          - navigation "Explore toolbar" [ref=f59e84]:
            - navigation "Search links" [ref=f59e86]:
              - generic [ref=f59e87]:
                - button "Content outline" [expanded] [ref=f59e89] [cursor=pointer]:
                  - generic [ref=f59e92]: Outline
                - generic [ref=f59e97] [cursor=pointer]:
                  - img "Prometheus logo" [ref=f59e99]
                  - textbox "Select a data source" [ref=f59e100]:
                    - /placeholder: Prometheus
            - generic [ref=f59e104]:
              - button "Split the pane" [ref=f59e106] [cursor=pointer]:
                - generic [ref=f59e109]: Split
              - button "Add" [ref=f59e111] [cursor=pointer]
              - generic [ref=f59e116]:
                - 'button "Time range selected: Last 30 minutes" [ref=f59e117] [cursor=pointer]'
                - button "Zoom out time range" [ref=f59e122] [cursor=pointer]
              - generic [ref=f59e126]:
                - button "Cancel" [ref=f59e127] [cursor=pointer]
                - button "Auto refresh turned off. Choose refresh time interval" [ref=f59e129] [cursor=pointer]
          - generic [ref=f59e133]:
            - generic [ref=f59e137]:
              - button "Collapse outline" [expanded] [ref=f59e139] [cursor=pointer]:
                - img "arrow-from-right" [ref=f59e140]
              - generic [ref=f59e142]:
                - button "Content outline item collapse button" [ref=f59e143] [cursor=pointer]:
                  - img "angle-right" [ref=f59e144]
                - button "Queries" [ref=f59e146] [cursor=pointer]:
                  - img "arrow" [ref=f59e147]
            - generic [ref=f59e154]:
              - generic [ref=f59e156]:
                - generic [ref=f59e157]:
                  - generic "Query editor row" [ref=f59e159]:
                    - generic [ref=f59e160]:
                      - generic [ref=f59e162]:
                        - generic [ref=f59e163]:
                          - button "Collapse query row" [expanded] [ref=f59e164] [cursor=pointer]
                          - generic [ref=f59e167]:
                            - button "Query editor row title A" [ref=f59e168] [cursor=pointer]:
                              - generic [ref=f59e169]: A
                            - emphasis [ref=f59e170]: (Prometheus)
                        - generic [ref=f59e171]:
                          - button "Show data source help" [ref=f59e173] [cursor=pointer]
                          - button "Duplicate query" [ref=f59e177] [cursor=pointer]
                          - button "Hide response" [ref=f59e181] [cursor=pointer]
                          - button "Remove query" [ref=f59e185] [cursor=pointer]
                          - button "Drag and drop to reorder" [ref=f59e188]:
                            - img "Drag and drop to reorder" [ref=f59e189]
                      - generic [ref=f59e192]:
                        - generic [ref=f59e193]:
                          - button "Kick start your query" [ref=f59e194] [cursor=pointer]
                          - generic [ref=f59e197]:
                            - generic [ref=f59e198] [cursor=pointer]: Explain
                            - generic [ref=f59e199]:
                              - checkbox "Explain Toggle switch" [ref=f59e200]
                              - generic "Toggle switch" [ref=f59e201] [cursor=pointer]
                          - radiogroup [ref=f59e206]:
                            - generic [ref=f59e207]:
                              - radio "Builder" [ref=f59e208] [cursor=pointer]
                              - generic [ref=f59e209] [cursor=pointer]: Builder
                            - generic [ref=f59e210]:
                              - radio "Code" [checked] [ref=f59e211] [cursor=pointer]
                              - generic [ref=f59e212] [cursor=pointer]: Code
                        - generic [ref=f59e214]:
                          - generic [ref=f59e216]:
                            - button "Loading metrics..." [disabled] [ref=f59e217] [cursor=pointer]
                            - code [ref=f59e224]:
                              - generic [ref=f59e225]:
                                - generic [ref=f59e230]: vendor_cluster_size
                                - textbox "Editor content;Press Alt+F1 for Accessibility Options." [ref=f59e235]: vendor_cluster_size
                          - 'button "Options Legend: cluster_size {{pod}} Format: Time series Step: auto Type: Range Exemplars: false" [ref=f59e241] [cursor=pointer]':
                            - generic [ref=f59e245]:
                              - heading "Options" [level=6] [ref=f59e246]
                              - generic [ref=f59e247]:
                                - generic [ref=f59e248]: "Legend: cluster_size {{pod}}"
                                - generic [ref=f59e249]: "Format: Time series"
                                - generic [ref=f59e250]: "Step: auto"
                                - generic [ref=f59e251]: "Type: Range"
                                - generic [ref=f59e252]: "Exemplars: false"
                  - generic "Query editor row" [ref=f59e254]:
                    - generic [ref=f59e255]:
                      - generic [ref=f59e257]:
                        - generic [ref=f59e258]:
                          - button "Collapse query row" [expanded] [ref=f59e259] [cursor=pointer]
                          - generic [ref=f59e262]:
                            - button "Query editor row title B" [ref=f59e263] [cursor=pointer]:
                              - generic [ref=f59e264]: B
                            - emphasis [ref=f59e265]: (Prometheus)
                        - generic [ref=f59e266]:
                          - button "Show data source help" [ref=f59e268] [cursor=pointer]
                          - button "Duplicate query" [ref=f59e272] [cursor=pointer]
                          - button "Hide response" [ref=f59e276] [cursor=pointer]
                          - button "Remove query" [ref=f59e280] [cursor=pointer]
                          - button "Drag and drop to reorder" [ref=f59e283]:
                            - img "Drag and drop to reorder" [ref=f59e284]
                      - generic [ref=f59e287]:
                        - generic [ref=f59e288]:
                          - button "Kick start your query" [ref=f59e289] [cursor=pointer]
                          - generic [ref=f59e292]:
                            - generic [ref=f59e293] [cursor=pointer]: Explain
                            - generic [ref=f59e294]:
                              - checkbox "Explain Toggle switch" [ref=f59e295]
                              - generic "Toggle switch" [ref=f59e296] [cursor=pointer]
                          - radiogroup [ref=f59e301]:
                            - generic [ref=f59e302]:
                              - radio "Builder" [ref=f59e303] [cursor=pointer]
                              - generic [ref=f59e304] [cursor=pointer]: Builder
                            - generic [ref=f59e305]:
                              - radio "Code" [checked] [ref=f59e306] [cursor=pointer]
                              - generic [ref=f59e307] [cursor=pointer]: Code
                        - generic [ref=f59e309]:
                          - generic [ref=f59e311]:
                            - button "Loading metrics..." [disabled] [ref=f59e312] [cursor=pointer]
                            - code [ref=f59e319]:
                              - generic [ref=f59e320]:
                                - generic [ref=f59e325]: "up{job=\"keycloak\"}"
                                - textbox "Editor content;Press Alt+F1 for Accessibility Options." [ref=f59e330]: "up{job=\"keycloak\"}"
                          - 'button "Options Legend: up {{pod}} Format: Time series Step: auto Type: Range Exemplars: false" [ref=f59e336] [cursor=pointer]':
                            - generic [ref=f59e340]:
                              - heading "Options" [level=6] [ref=f59e341]
                              - generic [ref=f59e342]:
                                - generic [ref=f59e343]: "Legend: up {{pod}}"
                                - generic [ref=f59e344]: "Format: Time series"
                                - generic [ref=f59e345]: "Step: auto"
                                - generic [ref=f59e346]: "Type: Range"
                                - generic [ref=f59e347]: "Exemplars: false"
                - generic [ref=f59e348]:
                  - button "Add query" [ref=f59e349] [cursor=pointer]
                  - button "Query history" [ref=f59e353] [cursor=pointer]
                  - button "Query inspector" [ref=f59e357] [cursor=pointer]
              - generic:
                - main
  - generic [ref=f59e364]:
    - alert
    - alert
    - complementary
    - complementary
@@ -0,0 +1,56 @@
 - generic [ref=f62e4]:
  - link "Skip to main content" [ref=f62e5] [cursor=pointer]:
    - /url: "#pageContent"
  - banner [ref=f62e7]:
    - generic [ref=f62e8]:
      - link [ref=f62e10] [cursor=pointer]:
        - /url: /
        - img "Grafana" [ref=f62e11]
      - generic [ref=f62e14]:
        - button "Search or jump to..." [ref=f62e18] [cursor=pointer]
        - generic [ref=f62e19]: ctrl+k
      - generic [ref=f62e23]:
        - button "New" [ref=f62e24] [cursor=pointer]
        - button "Help" [ref=f62e30] [cursor=pointer]
        - button "News" [ref=f62e33] [cursor=pointer]
        - button "Profile" [ref=f62e36] [cursor=pointer]:
          - img "User avatar" [ref=f62e37]
    - generic [ref=f62e38]:
      - button "Open menu" [ref=f62e40] [cursor=pointer]
      - navigation "Breadcrumbs" [ref=f62e43]:
        - list [ref=f62e44]:
          - listitem [ref=f62e45]:
            - link "Home" [ref=f62e46] [cursor=pointer]:
              - /url: /
          - listitem [ref=f62e50]:
            - link "Explore" [ref=f62e51] [cursor=pointer]:
              - /url: /explore
          - listitem [ref=f62e55]:
            - generic "Prometheus" [ref=f62e56]
      - generic [ref=f62e57]:
        - button "Show more items" [ref=f62e60] [cursor=pointer]
        - button "Toggle top search bar" [ref=f62e64] [cursor=pointer]
  - main [ref=f62e70]:
    - generic [ref=f62e72]:
      - heading "Explore" [level=1] [ref=f62e73]
      - generic [ref=f62e78]:
        - navigation "Explore toolbar" [ref=f62e80]:
          - navigation "Search links" [ref=f62e82]:
            - generic [ref=f62e83]:
              - button "Content outline" [expanded] [ref=f62e85] [cursor=pointer]:
                - generic [ref=f62e88]: Outline
              - generic [ref=f62e93] [cursor=pointer]:
                - img "Prometheus logo" [ref=f62e95]
                - textbox "Select a data source" [ref=f62e96]:
                  - /placeholder: Prometheus
          - button "Show more items" [ref=f62e102] [cursor=pointer]
        - generic [ref=f62e106]:
          - button "Collapse outline" [expanded] [ref=f62e112] [cursor=pointer]:
            - img "arrow-from-right" [ref=f62e113]
          - generic [ref=f62e119]:
            - generic [ref=f62e122]:
              - button "Add query" [ref=f62e123] [cursor=pointer]
              - button "Query history" [ref=f62e127] [cursor=pointer]
              - button "Query inspector" [ref=f62e131] [cursor=pointer]
            - generic:
              - main
@@ -0,0 +1,29 @@
 - generic [ref=f65e4]:
  - link "Skip to main content" [ref=f65e5] [cursor=pointer]:
    - /url: "#pageContent"
  - banner [ref=f65e7]:
    - generic [ref=f65e8]:
      - link [ref=f65e10] [cursor=pointer]:
        - /url: /
        - img "Grafana" [ref=f65e11]
      - generic [ref=f65e14]:
        - button "Search or jump to..." [ref=f65e18] [cursor=pointer]
        - generic [ref=f65e19]: ctrl+k
      - generic [ref=f65e23]:
        - button "New" [ref=f65e24] [cursor=pointer]
        - button "Help" [ref=f65e30] [cursor=pointer]
        - button "News" [ref=f65e33] [cursor=pointer]
        - button "Profile" [ref=f65e36] [cursor=pointer]:
          - img "User avatar" [ref=f65e37]
    - generic [ref=f65e38]:
      - button "Open menu" [ref=f65e40] [cursor=pointer]
      - navigation "Breadcrumbs" [ref=f65e43]:
        - list [ref=f65e44]:
          - listitem [ref=f65e45]:
            - link "Home" [ref=f65e46] [cursor=pointer]:
              - /url: /
          - listitem [ref=f65e50]:
            - generic "Explore" [ref=f65e51]
      - button "Toggle top search bar" [ref=f65e53] [cursor=pointer]
  - main [ref=f65e59]:
    - heading "Explore" [level=1] [ref=f65e62]
@@ -42,6 +42,25 @@
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!-- B-2: OAuth2AuthorizedClient 를 PostgreSQL 로 옮긴다.
             Q3 가 후보로 든 "Redis 와 JDBC 중 무엇" 에서 JDBC 쪽이며,
             JdbcOAuth2AuthorizedClientService 는 같은 인터페이스라
             컨트롤러를 바꾸지 않아도 된다. -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
@@ -8,15 +8,38 @@ import org.springframework.security.oauth2.client.OAuth2AuthorizedClientManager;
 import org.springframework.security.oauth2.client.OAuth2AuthorizedClientProvider;
 import org.springframework.security.oauth2.client.OAuth2AuthorizedClientProviderBuilder;
 import org.springframework.security.oauth2.client.OAuth2AuthorizedClientService;
 import org.springframework.security.oauth2.client.JdbcOAuth2AuthorizedClientService;
 import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
 import org.springframework.security.oauth2.client.web.DefaultOAuth2AuthorizationRequestResolver;
 import org.springframework.security.oauth2.client.web.OAuth2AuthorizationRequestCustomizers;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.csrf.CookieCsrfTokenRepository;
 import org.springframework.jdbc.core.JdbcOperations;
@Configuration
 public class SecurityConfig {
    /**
     * B-2 — authorized client 를 프로세스 메모리에서 PostgreSQL 로 옮긴다.
     *
     * B-1 에서 Application Session 만 Redis 로 옮겼더니, 사용자는 로그인
     * 상태로 보이는데 BFF 에는 access token 이 없는 상태가 만들어졌다.
     * 두 상태의 저장소를 **각각** 정해야 한다는 Q3 의 지적이 그대로 나타난 것이다.
     *
     * 주의 — 이것이 고치는 것과 고치지 못하는 것이 다르다.
     *   고친다   : 인스턴스 간 공유. 어느 replica 로 가도 같은 토큰을 본다.
     *   못 고친다: 조회 키. JdbcOAuth2AuthorizedClientService 도
     *              (clientRegistrationId, principalName) 으로 찾으므로
     *              같은 사용자의 두 브라우저는 여전히 한 항목을 공유한다.
     */
    @Bean
    OAuth2AuthorizedClientService authorizedClientService(
        JdbcOperations jdbcOperations,
        ClientRegistrationRepository clientRegistrationRepository
    ) {
        return new JdbcOAuth2AuthorizedClientService(jdbcOperations, clientRegistrationRepository);
    }
    @Bean
    SecurityFilterChain bffSecurity(
        HttpSecurity http,
@@ -10,6 +10,23 @@ server:
 spring:
  application:
    name: keycloak-bff
  datasource:
    # B-2: authorized client 전용. Keycloak 과 같은 PostgreSQL 인스턴스지만
    # 테이블이 다르다(oauth2_authorized_client). 운영이라면 분리를 검토한다.
    url: ${BFF_DB_URL:jdbc:postgresql://localhost:5432/keycloak}
    username: ${BFF_DB_USER:keycloak}
    password: ${BFF_DB_PASSWORD:keycloak}
  sql:
    init:
      # Spring Security 가 제공하는 DDL 을 그대로 쓴다.
      # always 로 두면 매 기동마다 실행되므로 CREATE TABLE IF NOT EXISTS 가 아닌
      # 스크립트에서는 실패한다 → continue-on-error 로 넘긴다.
      mode: ${SPRING_SQL_INIT_MODE:always}
      # ★ PostgreSQL 은 -postgres 판본을 써야 한다. 기본 판본은 `blob` 타입을
      #   쓰는데 PostgreSQL 에는 그 타입이 없다(`bytea` 다). continue-on-error 가
      #   그 실패를 삼켜서 "테이블이 조용히 안 생기는" 상태가 됐었다.
      schema-locations: classpath:org/springframework/security/oauth2/client/oauth2-client-schema-postgres.sql
      continue-on-error: true
  data:
    redis:
      host: ${REDIS_HOST:localhost}
@@ -27,6 +27,12 @@ import org.springframework.test.web.servlet.MockMvc;
    // 테스트는 Redis 를 띄우지 않는다. store-type=none 이면 자동구성이
    // 서블릿 컨테이너 기본 세션으로 되돌아가 컨텍스트가 뜬다.
    "spring.session.store-type=none",
    // 테스트에는 PostgreSQL 이 없다. H2 로 대신하고 Spring Security 의
    // DDL 을 그대로 태워 JdbcOAuth2AuthorizedClientService 가 뜨게 한다.
    "spring.datasource.url=jdbc:h2:mem:bfftest;DB_CLOSE_DELAY=-1",
    "spring.datasource.username=sa",
    "spring.datasource.password=",
    "spring.sql.init.mode=always",
    "resource-api.base-url=http://127.0.0.1:9"
 })
@AutoConfigureMockMvc
@@ -0,0 +1,128 @@
 # Experiment B-7 — oauth2-proxy, to measure how replicas share a cookie secret
 # and what happens when it is rotated (Q1, unknown 7).
 #
 # This is a different shape of problem from the BFF. The BFF keeps state on the
 # server, so the question was "which store". oauth2-proxy keeps no server state
 # at all: the whole session rides in a cookie that is signed and encrypted with
 # --cookie-secret. So there is nothing to share and nothing to lose on restart —
 # instead, every replica must hold the *same* secret, and changing it invalidates
 # every cookie at once.
 #
 #   kubectl apply -f deploy/lab/k8s/b7-oauth2-proxy.yaml
 #
 # app2.hyeonworks.com is borrowed from Grafana for the duration of this
 # experiment; the certificate only covers auth / app1 / app2, so a fourth name
 # is not available. Grafana's Ingress is restored afterwards.
 apiVersion: v1
 kind: Secret
 metadata:
  name: oauth2-proxy-secrets
  namespace: keycloak-lab
 type: Opaque
 stringData:
  # oauth2-proxy requires exactly 16, 24 or 32 bytes. This is the value whose
  # rotation the experiment is about.
  COOKIE_SECRET_A: "lab-cookie-secret-aaaaaaaaaaaaaa"
  COOKIE_SECRET_B: "lab-cookie-secret-bbbbbbbbbbbbbb"
  CLIENT_SECRET: proxy-lab-secret
 ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
  name: oauth2-proxy
  namespace: keycloak-lab
 spec:
  # Two replicas is the point: Q1 asks how they share the secret.
  replicas: 2
  selector:
    matchLabels: { app: oauth2-proxy }
  template:
    metadata:
      labels: { app: oauth2-proxy }
    spec:
      # See B-1: Kubernetes injects <SVCNAME>_PORT as a tcp:// URL and it
      # collides with ordinary configuration names.
      enableServiceLinks: false
      topologySpreadConstraints:
        - maxSkew: 1
          topologyKey: kubernetes.io/hostname
          whenUnsatisfiable: ScheduleAnyway
          labelSelector:
            matchLabels: { app: oauth2-proxy }
      containers:
        - name: oauth2-proxy
          image: quay.io/oauth2-proxy/oauth2-proxy:v7.7.1
          args:
            - --provider=oidc
            - --oidc-issuer-url=https://auth.hyeonworks.com/realms/keycloak-patterns
            - --client-id=oauth2-proxy
            - --redirect-url=https://app2.hyeonworks.com/oauth2/callback
            - --email-domain=*
            - --http-address=0.0.0.0:4180
            # The upstream is the same echo app the B-4 header experiment used,
            # so what the proxy forwards can be read straight off the response.
            - --upstream=http://echo.header-lab.svc:8081
            # ★ 이 옵션을 켜면 세션(=쿠키)에 access token 이 들어간다.
            # 그러면 Set-Cookie 가 커져 프록시 앞단에서 502 가 났다.
            # B-4 에서 본 헤더 크기 절벽이 이번에는 응답 쪽에서 나타난 것이다.
            # - --pass-authorization-header=true
            - --set-xauthrequest=true
            - --reverse-proxy=true
            - --cookie-secure=true
            # One hour, matching the value Q1 records for the current setup.
            - --cookie-expire=1h
            - --skip-provider-button=true
            # ★ 쿠키에 세션 전체를 담으면 Set-Cookie 가 커지고, 그 응답이
            # 앞단 nginx 의 proxy_buffer 를 넘겨 502 가 났다(측정됨).
            # Redis 로 옮기면 쿠키에는 티켓만 남는다 — 그리고 그 순간
            # "replica 가 secret 을 공유해야 한다"는 문제의 성격도 바뀐다.
            - --session-store-type=redis
            - --redis-connection-url=redis://redis.keycloak-lab.svc:6379
          env:
            - name: OAUTH2_PROXY_CLIENT_SECRET
              valueFrom:
                secretKeyRef: { name: oauth2-proxy-secrets, key: CLIENT_SECRET }
            # Which of the two secrets is in use is switched here. Both replicas
            # read the same key, which is exactly the sharing Q1 asks about.
            - name: OAUTH2_PROXY_COOKIE_SECRET
              valueFrom:
                secretKeyRef: { name: oauth2-proxy-secrets, key: COOKIE_SECRET_A }
          ports:
            - containerPort: 4180
              name: http
          readinessProbe:
            httpGet: { path: /ping, port: http }
            initialDelaySeconds: 5
          resources:
            requests: { memory: 32Mi, cpu: 20m }
            limits:   { memory: 128Mi }
 ---
 apiVersion: v1
 kind: Service
 metadata:
  name: oauth2-proxy
  namespace: keycloak-lab
 spec:
  selector: { app: oauth2-proxy }
  ports:
    - port: 4180
      targetPort: http
 ---
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
  name: oauth2-proxy
  namespace: keycloak-lab
 spec:
  ingressClassName: traefik
  rules:
    - host: app2.hyeonworks.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: oauth2-proxy
                port:
                  number: 4180
@@ -24,9 +24,24 @@ stringData:
  # Base64 in etcd is not encryption — see D-3.
  KEYCLOAK_CLIENT_SECRET: bff-lab-secret
 ---
-# Redis. No persistence yet: `--save ""` and no appendonly, so a restart loses
+# Redis. B-5 measured that turning on AOF with `redis-cli config set` changes
-# everything. B-5 and B-6 compare that against RDB and AOF, which is easier to
+# nothing here, because /data is the container filesystem and dies with the
-# reason about when the starting point is "nothing survives".
+# container — the appendonlydir was created and then thrown away. Persistence
 # configuration without a volume is decoration.
 #
 # So the volume comes first, and only then does `--appendonly yes` mean anything.
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
  name: redis-data
  namespace: keycloak-lab
 spec:
  accessModes: [ReadWriteOnce]
  storageClassName: local-path
  resources:
    requests:
      storage: 1Gi
 ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -47,16 +62,25 @@ spec:
      containers:
        - name: redis
          image: redis:7.4-alpine
-          args: ["redis-server", "--save", "", "--appendonly", "no"]
+          # appendfsync everysec 이 기본값이다 — 1초 분량을 잃을 수 있다.
          # Keycloak 의 synchronous_commit OFF(A-3)와 같은 모양의 트레이드오프다.
          args: ["redis-server", "--appendonly", "yes", "--dir", "/data"]
          ports:
            - containerPort: 6379
              name: redis
          readinessProbe:
            exec: { command: ["redis-cli", "ping"] }
            initialDelaySeconds: 3
          volumeMounts:
            - name: data
              mountPath: /data
          resources:
            requests: { memory: 32Mi, cpu: 20m }
            limits:   { memory: 128Mi }
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: redis-data
 ---
 apiVersion: v1
 kind: Service
@@ -137,6 +161,15 @@ spec:
              value: redis.keycloak-lab.svc
            - name: REDIS_PORT
              value: "6379"
            # B-2: authorized client 는 PostgreSQL 로. 세션(Redis)과 다른
            # 저장소를 쓰는 것이 Q3 가 말한 "각각 설계한다"의 실물이다.
            - name: BFF_DB_URL
              value: jdbc:postgresql://postgres.keycloak-lab.svc:5432/keycloak
            - name: BFF_DB_USER
              value: keycloak
            - name: BFF_DB_PASSWORD
              valueFrom:
                secretKeyRef: { name: keycloak-lab-secrets, key: POSTGRES_PASSWORD }
            - name: JAVA_TOOL_OPTIONS
              value: "-Xms128m -Xmx320m"
          readinessProbe:
@@ -0,0 +1,12 @@
 # 다이어그램 규약
 | 표현 | 뜻 |
 |---|---|
 | 실선 상자 | 살아 있는 구성 요소 |
 | 붉은 점선 상자 | 이 실험에서 죽이거나 막은 것 |
 | ✂ 붉은 X | 주입 지점 |
 | 실선 화살표 | 정상 경로 |
 | 붉은 점선 화살표 | 실험에서 깨진 경로 |
 | 회색 글씨 | 측정값 |
 SVG 는 GitHub 에서 그대로 렌더링되며 외부 폰트를 쓰지 않는다.
@@ -0,0 +1,26 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 700 300" width="700" height="300" font-family="system-ui,-apple-system,Segoe UI,Roboto,sans-serif">
  <style>
    .t{font-size:13px;fill:#1f2328}.s{font-size:11px;fill:#59636e}.h{font-size:14px;font-weight:600;fill:#1f2328}
    .r{font-size:12px;fill:#cf222e;font-weight:600}
    .box{fill:#fff;stroke:#8c959f;stroke-width:1.4;rx:6}
    .dead{fill:#fff5f5;stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;rx:6}
    .ok{fill:#f6fdf6;stroke:#1a7f37;stroke-width:1.6;rx:6}
    .ln{stroke:#59636e;stroke-width:1.4;fill:none;marker-end:url(#a)}
    .bad{stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;fill:none;marker-end:url(#b)}
  </style>
  <defs>
    <marker id="a" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#59636e"/></marker>
    <marker id="b" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#cf222e"/></marker>
  </defs>
  <text class="h" x="16" y="24">A-2 · PostgreSQL 정지 — 살아남는 노드가 없다</text>
  <rect class="box" x="30" y="46" width="180" height="52"/><text class="t" x="120" y="68" text-anchor="middle">keycloak-1</text><text class="s" x="120" y="86" text-anchor="middle">캐시: 세션 N개</text>
  <rect class="box" x="480" y="46" width="180" height="52"/><text class="t" x="570" y="68" text-anchor="middle">keycloak-0</text><text class="s" x="570" y="86" text-anchor="middle">캐시: 세션 M개</text>
  <path class="ln" d="M210,72 L480,72"/><text class="s" x="345" y="66" text-anchor="middle">7800 · 살아 있다</text>
  <path class="bad" d="M120,100 L300,150"/><path class="bad" d="M570,100 L400,150"/>
  <rect class="dead" x="270" y="156" width="160" height="52"/>
  <text class="r" x="350" y="178" text-anchor="middle">postgres ✗</text><text class="s" x="350" y="196" text-anchor="middle">replicas=0</text>
  <rect class="dead" x="30" y="228" width="290" height="52"/>
  <text class="r" x="175" y="250" text-anchor="middle">양쪽 모두 NotReady</text><text class="s" x="175" y="268" text-anchor="middle">ready 주소 = [] · 외부 503</text>
  <rect class="box" x="370" y="228" width="290" height="52"/>
  <text class="t" x="515" y="250" text-anchor="middle">up{job="keycloak"} = 1</text><text class="s" x="515" y="268" text-anchor="middle">프로세스는 살아 있다 — up 은 못 잡는다</text>
 </svg>
@@ -0,0 +1,36 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 720 330" width="720" height="330" font-family="system-ui,-apple-system,Segoe UI,Roboto,sans-serif">
  <style>
    .t{font-size:13px;fill:#1f2328}.s{font-size:11px;fill:#59636e}.h{font-size:14px;font-weight:600;fill:#1f2328}
    .r{font-size:12px;fill:#cf222e;font-weight:600}.g{font-size:12px;fill:#1a7f37;font-weight:600}
    .box{fill:#fff;stroke:#8c959f;stroke-width:1.4;rx:6}
    .ok{fill:#f6fdf6;stroke:#1a7f37;stroke-width:1.6;rx:6}
    .dead{fill:#fff5f5;stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;rx:6}
    .ln{stroke:#59636e;stroke-width:1.4;fill:none;marker-end:url(#a)}
  </style>
  <defs><marker id="a" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#59636e"/></marker></defs>
  <text class="h" x="16" y="24">A-7 · 같은 주입, 같은 관측, 정반대 결과</text>
  <text class="h" x="180" y="52" text-anchor="middle">persistent (KC 26 기본)</text>
  <rect class="box" x="30" y="62" width="300" height="54"/>
  <text class="t" x="180" y="84" text-anchor="middle">keycloak ×2 — 로컬 캐시</text>
  <path class="ln" d="M180,116 L180,140"/>
  <rect class="ok" x="70" y="142" width="220" height="40"/>
  <text class="g" x="180" y="167" text-anchor="middle">PostgreSQL — 진실의 원천</text>
  <text class="h" x="540" y="52" text-anchor="middle">volatile (KC 24 이전 방식)</text>
  <rect class="box" x="390" y="62" width="300" height="54"/>
  <text class="t" x="540" y="84" text-anchor="middle">keycloak ×2 — 캐시가 곧 진실</text>
  <path class="ln" d="M470,116 L470,140"/><path class="ln" d="M610,140 L610,116"/>
  <rect class="ok" x="430" y="142" width="220" height="40"/>
  <text class="g" x="540" y="167" text-anchor="middle">클러스터 복제 (7800)</text>
  <rect class="box" x="30" y="202" width="660" height="112"/>
  <text class="t" x="360" y="224" text-anchor="middle">뒤집힌 세 결과</text>
  <text class="s" x="200" y="248" text-anchor="middle">A-1 7800 차단 후 교차 refresh</text>
  <text class="g" x="430" y="248" text-anchor="middle">200</text><text class="r" x="560" y="248" text-anchor="middle">400 Session not active</text>
  <text class="s" x="200" y="272" text-anchor="middle">A-8 롤링 재시작 후 refresh</text>
  <text class="g" x="430" y="272" text-anchor="middle">200</text><text class="r" x="560" y="272" text-anchor="middle">400 Session not active</text>
  <text class="s" x="200" y="296" text-anchor="middle">A-2 DB 정지 중 새 로그인</text>
  <text class="r" x="430" y="296" text-anchor="middle">500</text><text class="g" x="560" y="296" text-anchor="middle">200</text>
  <text class="s" x="430" y="230" text-anchor="middle">persistent</text><text class="s" x="560" y="230" text-anchor="middle">volatile</text>
 </svg>
@@ -0,0 +1,33 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 700 330" width="700" height="330" font-family="system-ui,-apple-system,Segoe UI,Roboto,sans-serif">
  <style>
    .t{font-size:13px;fill:#1f2328}.s{font-size:11px;fill:#59636e}.h{font-size:14px;font-weight:600;fill:#1f2328}
    .r{font-size:12px;fill:#cf222e;font-weight:600}
    .box{fill:#fff;stroke:#8c959f;stroke-width:1.4;rx:6}
    .dead{fill:#fff5f5;stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;rx:6}
    .ok{fill:#f6fdf6;stroke:#1a7f37;stroke-width:1.6;rx:6}
    .ln{stroke:#59636e;stroke-width:1.4;fill:none;marker-end:url(#a)}
    .bad{stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;fill:none;marker-end:url(#b)}
  </style>
  <defs>
    <marker id="a" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#59636e"/></marker>
    <marker id="b" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#cf222e"/></marker>
  </defs>
  <text class="h" x="16" y="24">B-1 · Redis 는 세션만 옮기고 토큰은 두고 간다</text>
  <rect class="box" x="30" y="46" width="140" height="46"/><text class="t" x="100" y="66" text-anchor="middle">bff-0</text><text class="s" x="100" y="82" text-anchor="middle">kc-lab-1</text>
  <rect class="box" x="30" y="104" width="140" height="46"/><text class="t" x="100" y="124" text-anchor="middle">bff-1</text><text class="s" x="100" y="140" text-anchor="middle">kc-lab-2</text>
  <rect class="ok" x="330" y="46" width="330" height="60"/>
  <text class="t" x="495" y="68" text-anchor="middle">Redis — Application Session</text>
  <text class="s" x="495" y="86" text-anchor="middle">sessionRepository → RedisSessionRepository ✔ 옮겨졌다</text>
  <text class="s" x="495" y="100" text-anchor="middle">필드: SPRING_SECURITY_CONTEXT · TTL 1772초</text>
  <rect class="dead" x="330" y="122" width="330" height="60"/>
  <text class="r" x="495" y="144" text-anchor="middle">프로세스 메모리 — OAuth2AuthorizedClient</text>
  <text class="s" x="495" y="162" text-anchor="middle">InMemoryOAuth2AuthorizedClientService ✗ 그대로</text>
  <text class="s" x="495" y="176" text-anchor="middle">access token · refresh token 이 여기 있다</text>
  <path class="ln" d="M170,69 L330,69"/><path class="ln" d="M170,127 L330,80"/>
  <path class="bad" d="M170,140 L330,150"/>
  <rect class="box" x="30" y="210" width="630" height="90"/>
  <text class="t" x="345" y="234" text-anchor="middle">그 결과 사용자에게 보이는 것</text>
  <text class="s" x="345" y="256" text-anchor="middle">principal: labuser        ← 로그인은 되어 있다</text>
  <text class="s" x="345" y="272" text-anchor="middle">accessTokenStoredOnServer: false   ← 토큰이 없다</text>
  <text class="r" x="345" y="292" text-anchor="middle">완전히 로그아웃되는 편이 차라리 낫다</text>
 </svg>
@@ -0,0 +1,29 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 700 300" width="700" height="300" font-family="system-ui,-apple-system,Segoe UI,Roboto,sans-serif">
  <style>
    .t{font-size:13px;fill:#1f2328}.s{font-size:11px;fill:#59636e}.h{font-size:14px;font-weight:600;fill:#1f2328}
    .r{font-size:12px;fill:#cf222e;font-weight:600}
    .box{fill:#fff;stroke:#8c959f;stroke-width:1.4;rx:6}
    .dead{fill:#fff5f5;stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;rx:6}
    .ok{fill:#f6fdf6;stroke:#1a7f37;stroke-width:1.6;rx:6}
    .ln{stroke:#59636e;stroke-width:1.4;fill:none;marker-end:url(#a)}
    .bad{stroke:#cf222e;stroke-width:1.6;stroke-dasharray:5 3;fill:none;marker-end:url(#b)}
  </style>
  <defs>
    <marker id="a" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#59636e"/></marker>
    <marker id="b" markerWidth="9" markerHeight="9" refX="8" refY="4.5" orient="auto"><path d="M0,0 L9,4.5 L0,9 z" fill="#cf222e"/></marker>
  </defs>
  <text class="h" x="16" y="24">B-3 · 동시 refresh — 경쟁이 아니라 세션 파괴</text>
  <rect class="box" x="30" y="46" width="150" height="40"/><text class="t" x="105" y="71" text-anchor="middle">같은 refresh token ×5</text>
  <path class="ln" d="M180,66 L280,66"/>
  <rect class="box" x="280" y="42" width="180" height="48"/><text class="t" x="370" y="62" text-anchor="middle">Keycloak</text>
  <text class="s" x="370" y="80" text-anchor="middle">rotation ON · maxReuse=0</text>
  <path class="ln" d="M460,58 L560,58"/><rect class="box" x="560" y="42" width="110" height="24"/><text class="s" x="615" y="58" text-anchor="middle">1× HTTP 200</text>
  <path class="bad" d="M460,78 L560,78"/><rect class="dead" x="560" y="66" width="110" height="24"/><text class="s" x="615" y="82" text-anchor="middle">4× HTTP 400</text>
  <rect class="dead" x="120" y="120" width="460" height="70"/>
  <text class="r" x="350" y="144" text-anchor="middle">재사용 탐지가 client session 을 제거한다</text>
  <text class="s" x="350" y="164" text-anchor="middle">user_session 은 남고 client_session = 0 (정상 세션은 1)</text>
  <text class="s" x="350" y="180" text-anchor="middle">그래서 오류가 "Session doesn't have required client"</text>
  <rect class="dead" x="120" y="210" width="460" height="60"/>
  <text class="r" x="350" y="234" text-anchor="middle">★ 이긴 요청의 새 토큰도 곧바로 400</text>
  <text class="s" x="350" y="254" text-anchor="middle">재시도로 회복 불가 → Q2 의 판정은 lock</text>
 </svg>
@@ -0,0 +1,37 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 700 290" width="700" height="290" font-family="system-ui,-apple-system,Segoe UI,Roboto,sans-serif">
  <style>
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  <text class="h" x="16" y="24">B-4 · edge 가 설정하지 않은 헤더는 그대로 통과한다</text>
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  <rect class="box" x="250" y="40" width="180" height="72"/><text class="t" x="340" y="62" text-anchor="middle">nginx</text>
  <text class="s" x="340" y="82" text-anchor="middle">proxy_set_header 한 것만 덮어쓴다</text>
  <text class="r" x="340" y="100" text-anchor="middle">X-Auth-Request-* 는 설정이 없다</text>
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  <rect class="dead" x="520" y="46" width="150" height="60"/>
  <text class="r" x="595" y="68" text-anchor="middle">upstream</text>
  <text class="s" x="595" y="86" text-anchor="middle">['viewer','admin']</text><text class="s" x="595" y="100" text-anchor="middle">둘 다 도착 · 검증 없음</text>
  <rect class="box" x="30" y="134" width="310" height="66"/>
  <text class="t" x="185" y="156" text-anchor="middle">구분자 문제</text>
  <text class="s" x="185" y="176" text-anchor="middle">"admin,editor" 와 "role-with,comma" 가</text>
  <text class="s" x="185" y="192" text-anchor="middle">도착 시점에 구별되지 않는다</text>
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  <text class="t" x="515" y="156" text-anchor="middle">크기는 절벽이다</text>
  <text class="s" x="515" y="176" text-anchor="middle">4KB 통과 · 8KB → Tomcat 400</text>
  <text class="s" x="515" y="192" text-anchor="middle">16KB → 연결 끊김 (nginx)</text>
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  <text class="r" x="350" y="244" text-anchor="middle">헤더가 인가 근거가 되면 위조 가능성이 곧 권한 상승이다</text>
  <text class="s" x="350" y="262" text-anchor="middle">Q4 의 5문항 중 2·4번 해당 → Q4 자신의 기준으로 BFF 구조</text>
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  <text class="h" x="16" y="24">B-5 · 파드가 Ready 인 채로 계속 실패한다</text>
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  <text class="t" x="120" y="68" text-anchor="middle">bff ×2</text>
  <text class="g" x="120" y="90" text-anchor="middle">Ready = true</text>
  <text class="s" x="120" y="110" text-anchor="middle">Service 에 그대로 남는다</text>
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  <text class="r" x="410" y="80" text-anchor="middle">redis ✗</text><text class="s" x="410" y="98" text-anchor="middle">replicas=0</text>
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  <text class="t" x="185" y="168" text-anchor="middle">health group 이 갈랐다</text>
  <text class="r" x="185" y="192" text-anchor="middle">/actuator/health → 503</text>
  <text class="g" x="185" y="214" text-anchor="middle">/actuator/health/readiness → 200 UP</text>
  <text class="s" x="185" y="238" text-anchor="middle">redis 지표가 readiness 그룹에 없다</text>
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  <text class="t" x="515" y="168" text-anchor="middle">A-2 와 정반대</text>
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  <text class="s" x="515" y="208" text-anchor="middle">→ NotReady → 503 (명확)</text>
  <text class="s" x="515" y="230" text-anchor="middle">B-5 BFF: 없음 → Ready 유지</text>
  <text class="r" x="515" y="248" text-anchor="middle">→ HTTP 000 (멈춤)</text>
  <text class="s" x="16" y="284">영속화: 볼륨 없이 AOF 만 켜면 appendonlydir 은 생기지만 파드 삭제로 전부 사라진다 — 볼륨이 먼저다</text>
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  <text class="h" x="16" y="24">B-6 · 회전은 안전하고 옛 키를 버리는 순간이 위험하다</text>
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  <text class="t" x="125" y="68" text-anchor="middle">t0 — 키 A 만</text>
  <text class="s" x="125" y="88" text-anchor="middle">발급 A · 검증 A</text>
  <text class="s" x="125" y="108" text-anchor="middle">JWKS RS256 1개</text>
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  <text class="t" x="350" y="68" text-anchor="middle">t1 — B 추가 (priority 200)</text>
  <text class="g" x="350" y="88" text-anchor="middle">발급 B · 검증 A+B</text>
  <text class="s" x="350" y="108" text-anchor="middle">옛 토큰 200 · 새 토큰 200</text>
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  <text class="t" x="575" y="68" text-anchor="middle">t2 — A 제거</text>
  <text class="r" x="575" y="88" text-anchor="middle">옛 토큰 즉시 401</text>
  <text class="s" x="575" y="108" text-anchor="middle">캐시가 유예를 주지 않는다</text>
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  <text class="t" x="350" y="168" text-anchor="middle">겹침 구간(t1~t2)의 최소 길이 = 옛 키로 서명된 것 중 가장 오래 사는 것의 수명</text>
  <text class="s" x="350" y="190" text-anchor="middle">access token 60초 · refresh token 1800초 → 최소 30분</text>
  <text class="s" x="16" y="234">모르는 kid 를 만나면 JWKS 를 다시 받으므로 제거가 즉시 반영된다. 유예는 옛 키를 남겨두는 기간으로 만든다.</text>
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  <text class="h" x="16" y="24">C-1 · SSO 의 구조와 IdP 로그아웃의 한계</text>
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  <text class="t" x="350" y="64" text-anchor="middle">Keycloak user session ×1</text>
  <text class="s" x="350" y="82" text-anchor="middle">oqOjHekin4JU-BZjgQLjUByW</text>
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  <rect class="box" x="60" y="134" width="240" height="52"/>
  <text class="t" x="180" y="156" text-anchor="middle">client session — bff-confidential</text>
  <text class="s" x="180" y="174" text-anchor="middle">app1 · Redis 세션 + PostgreSQL 토큰</text>
  <rect class="box" x="400" y="134" width="240" height="52"/>
  <text class="t" x="520" y="156" text-anchor="middle">client session — oauth2-proxy</text>
  <text class="s" x="520" y="174" text-anchor="middle">app2 · 쿠키 티켓 + Redis 세션</text>
  <rect class="dead" x="220" y="206" width="260" height="40"/>
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  <rect class="ok" x="60" y="256" width="240" height="34"/><text class="g" x="180" y="278" text-anchor="middle">app1 그대로 동작</text>
  <rect class="ok" x="400" y="256" width="240" height="34"/><text class="g" x="520" y="278" text-anchor="middle">app2 그대로 동작</text>
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  <text class="h" x="16" y="24">D-1 · 빈 데이터베이스가 200 을 냈다</text>
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  <text class="g" x="590" y="64" text-anchor="middle">복구 1초</text><text class="s" x="590" y="84" text-anchor="middle">오류 0건 · 재시작 0회</text>
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  <text class="t" x="350" y="140" text-anchor="middle">테이블이 0개일 때 무엇이 깨졌는가 — 전부가 아니다</text>
  <text class="g" x="350" y="162" text-anchor="middle">/protocol/openid-connect/certs → 200   (realm 키가 캐시에 있다)</text>
  <text class="r" x="350" y="182" text-anchor="middle">/.well-known → 500      토큰 발급 → 400</text>
  <rect class="dead" x="30" y="210" width="640" height="46"/>
  <text class="r" x="350" y="232" text-anchor="middle">헬스체크는 "DB 가 살아 있다"만 보고 "데이터가 있다"는 안 본다</text>
  <text class="s" x="350" y="250" text-anchor="middle">RPO = 백업 주기 + A-3 의 synchronous_commit 손실 · 덤프는 같은 호스트 /tmp 에 있었다</text>
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  <text class="r" x="185" y="68" text-anchor="middle">kubectl get -o jsonpath | base64 -d</text>
  <text class="s" x="185" y="88" text-anchor="middle">POSTGRES_PASSWORD = lab-postgres-change-me</text>
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  <text class="r" x="515" y="68" text-anchor="middle">저장소 (at rest)</text>
  <text class="s" x="515" y="88" text-anchor="middle">Encryption Disabled · state.db 에 평문</text>
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  <text class="r" x="185" y="142" text-anchor="middle">파드 안</text>
  <text class="s" x="185" y="162" text-anchor="middle">KEYCLOAK_CLIENT_SECRET=... 환경변수</text>
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  <text class="g" x="515" y="142" text-anchor="middle">RBAC</text>
  <text class="s" x="515" y="162" text-anchor="middle">default SA 는 get secrets 불가</text>
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  <text class="t" x="350" y="222" text-anchor="middle">describe 는 "14 bytes" 만 보여줘 감춰졌다는 착각을 준다</text>
  <text class="s" x="350" y="244" text-anchor="middle">base64 는 감추기 위한 것이 아니라 YAML 에 임의 바이트를 담기 위한 인코딩이다</text>
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  <text class="h" x="16" y="24">D-4 · 인증서 체인과 SAN 제약</text>
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  <text class="t" x="180" y="68" text-anchor="middle">체인 4단계 · Verify return code: 0</text>
  <text class="s" x="180" y="90" text-anchor="middle">0  CN=auth.hyeonworks.com</text>
  <text class="s" x="180" y="106" text-anchor="middle">1  Let's Encrypt YE2</text>
  <text class="s" x="180" y="122" text-anchor="middle">2  ISRG Root YE</text>
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  <text class="t" x="515" y="68" text-anchor="middle">SAN 3개 · 와일드카드 아님</text>
  <text class="s" x="515" y="90" text-anchor="middle">auth · app1 · app2</text>
  <text class="r" x="515" y="114" text-anchor="middle">네 번째 이름이 없다</text>
  <text class="s" x="515" y="134" text-anchor="middle">B-7 에서 Grafana 의 app2 를 빌려야 했다</text>
  <rect class="box" x="30" y="168" width="640" height="60"/>
  <text class="t" x="350" y="190" text-anchor="middle">단계가 1개면 cert.pem, 2개 이상이면 fullchain.pem 이다</text>
  <text class="s" x="350" y="212" text-anchor="middle">브라우저는 중간 인증서를 캐시하므로 cert.pem 실수는 캐시 없는 클라이언트에서만 드러난다</text>
 </svg>
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  <rect class="box" x="290" y="12" width="180" height="38"/>
  <text class="t" x="380" y="30" text-anchor="middle">개발 노트북</text>
  <text class="s" x="380" y="44" text-anchor="middle">브라우저 · kubectl · Playwright</text>
  <path class="ln" d="M380,52 L380,80"/>
  <text class="s" x="392" y="70">https · tailnet 100.x · split DNS</text>
  <rect class="host" x="40" y="84" width="680" height="66"/>
  <text class="h" x="56" y="106">test-server</text>
  <text class="s" x="56" y="122">Arch Linux · 12GB · WiFi only · sudo 는 비밀번호 필요</text>
  <rect class="box" x="430" y="94" width="270" height="46"/>
  <text class="t" x="565" y="112" text-anchor="middle">nginx :443 — TLS 종료</text>
  <text class="s" x="565" y="128" text-anchor="middle">auth / app1 / app2 (SAN 3개, 와일드카드 아님)</text>
  <path class="ln" d="M240,152 L200,186"/><path class="ln" d="M520,152 L560,186"/>
  <text class="s" x="330" y="172" text-anchor="middle">http · libvirt NAT (virbr0)</text>
  <rect class="node" x="40" y="190" width="320" height="250"/>
  <text class="h" x="56" y="212">kc-lab-1 · 5120MB</text>
  <text class="s" x="56" y="228">k3s server · 10.42.0.0/24</text>
  <rect class="box" x="56" y="238" width="130" height="26"/><text class="t" x="121" y="255" text-anchor="middle">traefik ×1</text>
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  <rect class="box" x="56" y="272" width="130" height="26"/><text class="t" x="121" y="289" text-anchor="middle">keycloak-1</text>
  <rect class="box" x="196" y="272" width="148" height="26"/><text class="t" x="270" y="289" text-anchor="middle">bff (1/2)</text>
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  <rect class="box" x="56" y="340" width="288" height="46"/>
  <text class="t" x="200" y="358" text-anchor="middle">prometheus (PVC) · grafana</text>
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  <text class="h" x="416" y="212">kc-lab-2 · 4096MB</text>
  <text class="s" x="416" y="228">k3s agent · 10.42.1.0/24</text>
  <rect class="box" x="416" y="238" width="288" height="26"/><text class="t" x="560" y="255" text-anchor="middle">keycloak-0</text>
  <rect class="box" x="416" y="272" width="140" height="26"/><text class="t" x="486" y="289" text-anchor="middle">bff (2/2)</text>
  <rect class="box" x="566" y="272" width="138" height="26"/><text class="t" x="635" y="289" text-anchor="middle">oauth2-proxy</text>
  <rect class="box" x="416" y="306" width="140" height="46"/>
  <text class="t" x="486" y="324" text-anchor="middle">postgres</text><text class="s" x="486" y="340" text-anchor="middle">PVC (노드 고정)</text>
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  <text class="s" x="560" y="374" text-anchor="middle">장애 주입은 여기</text>
  <path d="M360,290 L400,290" stroke="#0969da" stroke-width="1.6" fill="none" marker-end="url(#a)"/>
  <path d="M400,300 L360,300" stroke="#0969da" stroke-width="1.6" fill="none" marker-end="url(#a)"/>
  <text class="s" x="380" y="284" text-anchor="middle">7800</text>
  <text class="s" x="380" y="318" text-anchor="middle">JGroups</text>
  <text class="s" x="40" y="460">A-0 에서 확인: 세션은 이 7800 이 아니라 postgres 를 통해 공유된다</text>
 </svg>
@@ -0,0 +1,9 @@
 === A-3 이 가정만 하고 재지 않은 값 ===
          name          | setting | unit | source  
 ------------------------+---------+------+---------
 commit_delay           | 0       |      | default
 synchronous_commit     | on      |      | default
 wal_writer_delay       | 200     | ms   | default
 wal_writer_flush_after | 128     | 8kB  | default
 (4 rows)
@@ -0,0 +1,19 @@
 # 주의 — 이 파일은 원 실험 시점에 0바이트로 저장됐다.
 # 리다이렉션이 stdout 만 받았는데 출력이 stderr 로 갔거나 tee 앞 파이프가
 # 비어 있었던 것으로 보인다. README 는 그 사이 파일 내용을 서술하고 있었는데,
 # 그것은 화면에서 본 것을 적은 것이지 이 파일에서 온 것이 아니었다.
 #
 # 아래는 사후에 다시 수집한 것이며, 원 시점의 DROP 규칙(0 패킷)은 이미
 # 제거되어 재현되지 않는다. 구조적 사실(kube-router 가 자기 체인을 FORWARD
 # 최상단에 유지한다)만 확인할 수 있다.
 # 원 실험의 결정적 증거는 04-correct-direction.txt 의 패킷 카운터 19/21 이다.
 === A-5 재수집 — filter 테이블 규칙이 CNI 체인에 밀리는 것 ===
 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 num   pkts bytes target     prot opt in     out     source               destination         
 1     1690 3386K KUBE-ROUTER-FORWARD  0    --  *      *       0.0.0.0/0            0.0.0.0/0            /* kube-router netpol - TEMCG2JMHZYE7H7T */
 2        7   612 KUBE-PROXY-FIREWALL  0    --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate NEW /* kubernetes load balancer firewall */
 3       40 13196 KUBE-FORWARD  0    --  *      *       0.0.0.0/0            0.0.0.0/0            /* kubernetes forwarding rules */
  (원 실험 시점의 규칙은 이미 제거됐다. 아래는 kube-router 가 자기 체인을
   FORWARD 최상단에 유지한다는 구조적 사실만 보여준다 — 그것이 실패 원인이었다.)
@@ -16,3 +16,10 @@
 1. **세션은 옮겨졌고 토큰은 안 옮겨졌다.** 빈 81개가 늘었는데 authorized client 관련은 하나도 안 바뀌었다.
 2. **refresh token 은 Redis 에 평문으로 있는 게 아니라 아예 없다.** 암호화를 고민하기 전에 이걸 알아야 한다.
 3. **"로그인은 되어 있는데 아무것도 못 하는" 상태가 만들어진다** — 완전 로그아웃보다 나쁘다.
 ## 스크린샷 주의
 `b1-login-works-two-replicas.png` 과 `b1-token-boundary-after-redis.png` 는
 **동일 파일**이며 `b2-before-relogin.png` 와도 같다 (md5 `6de826a7…`).
 세 시점 모두 `accessTokenStoredOnServer: false` 인 같은 화면이었다.
 **시점 구별은 터미널 출력과 Redis/DB 조회가 한다.**
@@ -0,0 +1,8 @@
 deployment.apps/bff configured
 deployment "bff" successfully rolled out
 bff-555df79c97-6j86w   1/1   Running       0     44s
 bff-555df79c97-vgg6g   1/1   Running       0     22s
 === oauth2_authorized_client 테이블이 생겼는가 ===
 Did not find any relation named "oauth2_authorized_client".
 command terminated with exit code 1
@@ -0,0 +1,33 @@
 === PostgreSQL 전용 스키마 ===
 CREATE TABLE oauth2_authorized_client (
  client_registration_id varchar(100) NOT NULL,
  principal_name varchar(200) NOT NULL,
  access_token_type varchar(100) NOT NULL,
  access_token_value bytea NOT NULL,
  access_token_issued_at timestamp NOT NULL,
  access_token_expires_at timestamp NOT NULL,
  access_token_scopes varchar(1000) DEFAULT NULL,
  refresh_token_value bytea DEFAULT NULL,
  refresh_token_issued_at timestamp DEFAULT NULL,
  created_at timestamp DEFAULT CURRENT_TIMESTAMP NOT NULL,
  PRIMARY KEY (client_registration_id, principal_name)
 );
 === 적용 ===
 CREATE TABLE
                                Table "public.oauth2_authorized_client"
         Column          |            Type             | Collation | Nullable |         Default         
 -------------------------+-----------------------------+-----------+----------+-------------------------
 client_registration_id  | character varying(100)      |           | not null | 
 principal_name          | character varying(200)      |           | not null | 
 access_token_type       | character varying(100)      |           | not null | 
 access_token_value      | bytea                       |           | not null | 
 access_token_issued_at  | timestamp without time zone |           | not null | 
 access_token_expires_at | timestamp without time zone |           | not null | 
 access_token_scopes     | character varying(1000)     |           |          | NULL::character varying
 refresh_token_value     | bytea                       |           |          | 
 refresh_token_issued_at | timestamp without time zone |           |          | 
 created_at              | timestamp without time zone |           | not null | CURRENT_TIMESTAMP
 Indexes:
    "oauth2_authorized_client_pkey" PRIMARY KEY, btree (client_registration_id, principal_name)
@@ -0,0 +1,20 @@
 === Q3 검증 2번 — 저장소를 직접 열어 refresh token 이 평문인가 ===
 eyJhbGciOiJIUzUxMiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJlMmUzZDZkMy0yNzQyLTRhYWItYjk4Ni02ZDU2ZDM5MDk1ZDEifQ.eyJleHAiOjE3ODg1MDA0NDYsImlhdCI6MTc4ODQ5ODY0NiwianRpIjoiNTQwOTZmYTQtZWRjNi1iZjZkLWE4OGMtZDJhNjEzOGJjNmVlIiwiaXNzIjoiaHR0cHM6Ly9hdXRoLmh5ZW9ud29ya3MuY29tL3JlYWxtcy9rZXljbG9hay1wYXR0ZXJucyIsImF1ZCI6I
 === access token 도 ===
 eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJPWS1jYVlETkdvUDRITUF6LVE5VVBUVS1ETTFpODk2TnV6VVp1NmdmQ3FNIn0.eyJleHAi
 === 그 문자열이 실제 JWT 인지 — 헤더를 디코드 ===
  File "<string>", line 3
    h=open(/tmp/hdr.txt).read().strip()
           ^
 SyntaxError: invalid syntax
 === 저장된 바이트를 그대로 디코드한 결과 ===
  refresh_token 헤더 : {"alg":"HS512","typ" : "JWT","kid" : "e2e3d6d3-2742-4aab-b986-6d56d39095d1"}
  refresh_token 페이로드(앞부분):
    {"exp":1788500446,"iat":1788498646,"jti":"54096fa4-edc6-bf6d-a88c-d2a6138bc6ee","iss":"https://auth.hyeonworks.com/realms/keycloak-patterns"
  access_token 헤더  : {"alg":"RS256","typ" : "JWT","kid" : "OY-caYDNGoP4HMAz-Q9UPTU-DM1i896NuzUZu6gfCqM"}
  → bytea 에 들어 있는 것은 암호화된 덩어리가 아니라 JWT 문자열 그대로다.
    DB 읽기 권한만 있으면 그 자리에서 쓸 수 있는 토큰을 얻는다.
@@ -0,0 +1,25 @@
 === [현재] 같은 사용자의 항목 ===
 client_registration_id | principal_name |   access_token_issued_at   |              at_md5              
 ------------------------+----------------+----------------------------+----------------------------------
 keycloak               | labuser        | 2026-09-04 05:10:46.927192 | 675af2286bfc2fd9d2bab7bc8f391df7
 (1 row)
  행 수: 1
 === [모의 두 번째 브라우저] 세션만 지우고 같은 사용자로 다시 로그인시킨다 ===
  (브라우저가 달라도 principal 은 같으므로 조회 키가 같다)
  Redis 세션 삭제 완료 — 다음 요청이 새 로그인을 만든다
 === [재로그인 후] 행이 늘었는가, 덮어써졌는가 ===
 client_registration_id | principal_name |   access_token_issued_at   |              at_md5              
 ------------------------+----------------+----------------------------+----------------------------------
 keycloak               | labuser        | 2026-09-04 05:12:13.018828 | e19a63fc5aa18bd0a68b3e19dff16b3b
 (1 row)
  행 수: 1
  ★ 행 수가 1 그대로이고 md5 가 바뀌었으면 → 덮어쓰기다
 === Q1 검증 ④ — 로그아웃하면 두 저장소가 다 정리되는가 ===
  로그아웃 전
    Redis: 1 키
    PostgreSQL: 1 행
@@ -0,0 +1,14 @@
 === Q1 검증 ④ — 로그아웃 후 두 저장소 상태 ===
  Redis 세션      : 0 키
  PostgreSQL 토큰 : 1 행
 principal_name |   access_token_issued_at   |  access_token_expires_at   
 ----------------+----------------------------+----------------------------
 labuser        | 2026-09-04 05:12:13.018828 | 2026-09-04 05:13:13.018828
 (1 row)
  ★ Redis 는 비었는데 PostgreSQL 에 행이 남아 있으면 → 한쪽만 정리된 것
 === Keycloak 쪽 SSO 세션은? ===
  Keycloak 온라인 세션: 2
@@ -0,0 +1,32 @@
 # B-2 — 다중 인스턴스 운영 증거
 2026-09-04 15:05–15:15 KST
 해설: [`docs/experiment-b2-multi-instance-session.md`](../../experiment-b2-multi-instance-session.md)
 | 파일 | 무엇을 보여주는가 |
 |---|---|
 | `01-jdbc-store-deploy.txt` | JDBC 저장소로 배포. **테이블이 조용히 안 만들어졌다** |
 | `02-schema.txt` | 원인 — 기본 DDL 은 `blob`(PostgreSQL 에 없음), `-postgres.sql` 판본이 따로 있다. **`PRIMARY KEY (client_registration_id, principal_name)`** — 조회 키 문제가 DDL 에 박혀 있다 |
 | `03-plaintext-tokens.txt` | **Q3 검증 2번** — `bytea` 안이 JWT 문자열 그대로. 디코드하면 `{"alg":"HS512",...}` |
 | `04-overwrite-test.txt` | **Q1 검증 3번** — 같은 사용자 재로그인 시 행 수 1 그대로, `issued_at` 과 md5 만 바뀜 = **UPDATE(덮어쓰기)** |
 | `05-logout-cleanup.txt` | **Q1 검증 4번** — Redis 0키 / PostgreSQL **1행 잔존** / Keycloak SSO **2세션 잔존** |
 | `b2-before-relogin.png` | JDBC 전환 직후, 옛 세션은 여전히 `false` |
 | `b2-tokens-shared-across-instances.png` | 재로그인 후 **`accessTokenStoredOnServer: true`** — 두 replica 에서 동작 |
 ## 핵심 네 줄
 1. **세션 Redis + 토큰 PostgreSQL 분리 저장이 성립한다.** B-1 의 "로그인은 됐는데 토큰이 없는" 상태가 해결됐다.
 2. **refresh token 은 평문이다.** DB 읽기 권한이면 작동하는 토큰을 얻는다.
 3. **같은 사용자의 두 번째 로그인이 첫 번째를 덮어쓴다.** 기본키에 session id 가 없어 구조적으로 그렇다.
 4. **로그아웃은 셋 중 하나만 지운다.** 평문 토큰과 Keycloak SSO 세션이 남는다.
 ## 스크린샷 주의
 `b2-tokens-shared-across-instances.png` 는 **B-0 의
 `b0-bff-token-boundary.png` 와 동일 파일**이다 (md5 `9ed00537…`).
 두 시점 모두 `accessTokenStoredOnServer: true` 인 같은 화면이라 바이트가 같다.
 **그래서 이 png 는 "JDBC 전환으로 토큰이 공유된다" 를 단독으로 증명하지
 못한다.** 그 증명은 `01-jdbc-store-deploy.txt`(테이블 생성)과
 `03-plaintext-tokens.txt`(행에 토큰이 들어 있음)가 한다.
 `b2-before-relogin.png` 는 B-1 의 캡처와 동일 파일이다.
@@ -0,0 +1,11 @@
 === [1] refresh token 하나 확보 ===
  토큰 길이: 811
  jti: 8e7e3ee2-0dc8-573d-58ec-d12651a50b9c
  sid: BvFiB01Rntz1FcLdf7zG4BNt
 === [2] 같은 refresh token 으로 동시에 5회 갱신 ===
  요청 1: HTTP 400  {"error":"invalid_grant","error_description":"Maximum allowed refresh token reuse exceeded"}
  요청 2: HTTP 400  {"error":"invalid_grant","error_description":"Session doesn't have required client"}
  요청 3: HTTP 400  {"error":"invalid_grant","error_description":"Session doesn't have required client"}
  요청 4: HTTP 400  {"error":"invalid_grant","error_description":"Session doesn't have required client"}
  요청 5: HTTP 200  {"access_token":"...(발급됨)
@@ -0,0 +1,16 @@
 === [3] 이긴 요청이 받은 새 토큰은 쓸 수 있는가 ===
  새 refresh token 길이: 810
  그 토큰으로 다시 갱신:  HTTP 400
    {"error":"invalid_grant","error_description":"Session doesn't have required client"}
 === [4] 그 sid 의 세션이 DB 에 남아 있는가 ===
     user_session_id      | offline_flag | last_session_refresh 
 --------------------------+--------------+----------------------
 BvFiB01Rntz1FcLdf7zG4BNt | 0            |           1788498996
 (1 row)
 === [5] revoked_token 테이블 ===
 revoked_count 
 ---------------
             0
 (1 row)
@@ -0,0 +1,14 @@
 === user session 과 client session 을 나눠서 본다 ===
     user_session_id      | offline_flag | client_sessions 
 --------------------------+--------------+-----------------
 BvFiB01Rntz1FcLdf7zG4BNt | 0            |               0
 (1 row)
 === 대조: 정상 세션 하나를 새로 만들어 비교 ===
  새 sid: JT-XuepgutWcE273QwAnIXta
     user_session_id      | client_sessions 
 --------------------------+-----------------
 JT-XuepgutWcE273QwAnIXta |               1
 (1 row)
@@ -0,0 +1,24 @@
 === 구성 A: rotation ON (revokeRefreshToken=true, maxReuse=0) — 앞서 측정 ===
    성공 1 / 5, 세션 파괴됨
 === 구성 B: rotation OFF (revokeRefreshToken=false) ===
    sid=iW1CGyO7COdyJLryIrCt3njk
    1: 200 
    2: 200 
    3: 200 
    4: 200 
    5: 200 
    성공 5 / 5
    이긴 토큰 재사용: HTTP 200
    남은 client_session: 1
 === 구성 C: rotation ON + 재사용 1회 허용 (maxReuse=1) ===
    sid=72c04JCdr0NpCHGQmXWW2wM8
    1: 200 
    2: 400 "error_description":"Session doesn't have required client"
    3: 200 
    4: 400 "error_description":"Maximum allowed refresh token reuse exceeded"
    5: 400 "error_description":"Session doesn't have required client"
    성공 2 / 5
    이긴 토큰 재사용: HTTP 400
    남은 client_session: 0
@@ -0,0 +1,18 @@
 # B-3 — Refresh Token 동시 갱신 경쟁 증거
 2026-09-04 15:15–15:25 KST
 해설: [`docs/experiment-b3-refresh-token-contention.md`](../../experiment-b3-refresh-token-contention.md)
 | 파일 | 무엇을 보여주는가 |
 |---|---|
 | `01-concurrent-refresh.txt` | 같은 토큰으로 동시 5회 — **1개만 200**, 나머지는 `Maximum allowed refresh token reuse exceeded` 와 `Session doesn't have required client` **두 종류** 오류 |
 | `02-session-impact.txt` | **★ 이긴 요청의 새 토큰조차 400.** user_session 행은 남아 있고 `revoked_token` 은 0건 |
 | `03-client-session-removed.txt` | **기제 확정 (대조군 포함)** — 경쟁 세션 `client_sessions=0`, 정상 세션 `client_sessions=1` |
 | `04-policy-comparison.txt` | 정책 3종 비교 — rotation OFF 는 **5/5 성공·세션 생존**, maxReuse=1 은 **여전히 세션 파괴** |
 ## 핵심 네 줄
 1. **"하나는 성공"이 아니다.** 이긴 요청이 받은 토큰도 곧바로 쓸 수 없다.
 2. **재사용 탐지가 client session 을 제거한다.** user session 은 껍데기로 남아 `Session doesn't have required client` 가 된다.
 3. **`refreshTokenMaxReuse` 를 올려도 안 된다.** 동시 요청 수만큼 올려야 하고 그러면 rotation 의 목적이 사라진다.
 4. **재시도로 회복되지 않으므로 Q2 의 답은 lock 이다.** 그리고 lock 은 저장소 쪽(가급적 DB 행 잠금)에 있어야 한다.
@@ -0,0 +1,40 @@
 === Q4 ① 다중 값 role — 구분자와 동명 헤더 ===
 (a) 쉼표 구분 한 개 헤더
    보냄:   X-Auth-Request-Roles: admin,editor,viewer
    도착:   ['admin,editor,viewer']          ← 문자열 하나 그대로
 (b) 동명 헤더 두 개
    보냄:   X-Auth-Request-Roles: admin
            X-Auth-Request-Roles: editor
    도착:   ['admin', 'editor']              ← ★ 둘 다 도착. 덮어쓰지도 합치지도 않는다
 (c) 값 안에 구분자가 들어간 경우
    보냄:   X-Auth-Request-Roles: role-with,comma
    도착:   ['role-with,comma']              ← (a) 와 구별 불가
 === Q4 ② 헤더 크기 상한 ===
  보낸 길이   1000 → HTTP 200, 도착 길이 1000
  보낸 길이   4000 → HTTP 200, 도착 길이 4000
  보낸 길이   8000 → HTTP 400  (Tomcat 의 HTML 오류 페이지)
  보낸 길이  16000 → HTTP 000  (응답을 못 받음 = 연결이 끊김)
  보낸 길이  32000 → HTTP 000
  → 자르지 않는다. 거부한다. 그리고 거부하는 계층이 둘이며 증상이 다르다.
 === Q4 ④ upstream 이 검증하는가 ===
  아무 인증 없이 보냄:
    x-auth-request-user        ['administrator']
    x-auth-request-email       ['admin@example.com']
    x-auth-request-roles       ['realm-admin,superuser']
    remoteAddr                 100.123.124.30
  → 그대로 도착. 검증 없음.
  대조 — JWT 를 요구하는 경로:
    /api/echo        HTTP 200   (permitAll)
    /api/me          HTTP 401
    /api/protected   HTTP 401
  backend SecurityConfig:
    .requestMatchers("/actuator/health", "/actuator/health/**", "/api/public", ...).permitAll()
    .anyRequest().authenticated()
    .oauth2ResourceServer(oauth2 -> oauth2.jwt(...))
@@ -0,0 +1,14 @@
 # B-4 — Edge 인가 범위 증거
 2026-09-04 15:25–15:35 KST
 해설: [`docs/experiment-b4-edge-authorization-scope.md`](../../experiment-b4-edge-authorization-scope.md)
 | 파일 | 무엇을 보여주는가 |
 |---|---|
 | `01-header-handling.txt` | ① 동명 헤더가 **둘 다 도착**(`['admin','editor']`)하고 값 안의 쉼표를 구분자와 구별할 수 없다 · ② 8KB 에서 Tomcat 400, 16KB 에서 연결 끊김 — **자르지 않고 거부** · ④ 위조 신원 헤더가 그대로 도착, JWT 경로는 401 |
 ## 핵심 세 줄
 1. **Q4 의 「nginx 가 동명 헤더를 덮어쓴다」는 조건부다.** nginx 는 자기가 `proxy_set_header` 한 헤더만 덮어쓰고, 나머지는 통과시킨다 — 지금 `X-Auth-Request-*` 는 통과한다.
 2. **크기는 절벽이다.** 점진적으로 나빠지지 않고 8KB 에서 전면 400 이 되며, role 이 많은 사용자만 깨진다.
 3. **헤더를 인가 근거로 쓰면 위조 가능성이 곧 권한 상승이다.** 2홉 실험의 결론이 여기서는 신원 자체에 적용된다.
@@ -0,0 +1,9 @@
 === 기준선 ===
  Redis 키: 1
  PostgreSQL 토큰: 1 행
  Redis 영속화 설정:
    save = save	
    appendonly	no
 === 외부 진입점 정상 확인 ===
  https://app1.hyeonworks.com/  HTTP 200
@@ -0,0 +1,25 @@
 === ① Redis 정지 ===
  정지: 14:26:30
 deployment.apps/redis scaled
  삭제 완료
 === 로그인한 사용자의 다음 요청은 어떻게 되는가 ===
  /                      HTTP 200
  /bff/token-boundary    HTTP 000
  /actuator/health       HTTP 503
  --- token-boundary 응답 본문 ---
 === 파드 상태 — readiness 가 Redis 를 보는가 ===
 bff-555df79c97-6j86w   1/1   Running   0     17m
 bff-555df79c97-vgg6g   1/1   Running   0     16m
 === health 상세 ===
 === BFF 로그 ===
 	at java.base/sun.nio.ch.Net.pollConnect(Native Method) ~[na:na]
 	at java.base/sun.nio.ch.Net.pollConnectNow(Unknown Source) ~[na:na]
 	at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(Unknown Source) ~[na:na]
 	at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:336) ~[netty-transport-4.1.135.Final.jar!/:4.1.135.Final]
 	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:339) ~[netty-transport-4.1.135.Final.jar!/:4.1.135.Final]
@@ -0,0 +1,13 @@
 === health 그룹별 응답 — 왜 파드는 Ready 인가 ===
  /actuator/health             HTTP server
  /actuator/health/readiness   HTTP 200
  /actuator/health/liveness    HTTP 200
 === /actuator/health 본문 (Redis 항목이 있는가) ===
 === /actuator/health/readiness 본문 ===
 {"status":"UP"}
 === Service 엔드포인트 — 트래픽을 계속 받는가 ===
  ready: [10.42.0.52 10.42.1.124]
@@ -0,0 +1,39 @@
 === 복구 ===
 deployment.apps/redis scaled
 deployment "redis" successfully rolled out
  /actuator/health       HTTP 200
  /bff/token-boundary    HTTP 302
  BFF 재시작 필요했나: 0,0 회 재시작
 === ② 영속화 — 지금 설정으로 재시작하면 무엇이 남는가 ===
  키 심음: before-restart
  dbsize: 4
  --- AOF 를 켜고 다시 심는다 (영속화가 켜져 있으면 살아남는가) ---
    appendonly	yes
    total 12
    drwxr-xr-x    3 redis    redis         4096 Sep  4 05:26 .
    drwxr-xr-x    1 root     root          4096 Sep  4 05:26 ..
    drwx------    2 redis    redis         4096 Sep  4 05:26 appendonlydir
  --- 파드를 지운다 ---
 deployment "redis" successfully rolled out
  재기동 후:
    dbsize:    0
    b5:probe   
    b5:aof     
    appendonly no
 persistentvolumeclaim/redis-data created
 deployment.apps/redis configured
 deployment "redis" successfully rolled out
 === 영속 볼륨 위에서 다시 시험 ===
  appendonly	yes
  키 심음: written-on-pvc
 sed: -e expression #1, char 8: unknown option to 's'
  --- 파드를 지운다 ---
 deployment "redis" successfully rolled out
  재기동 후:
    dbsize:  1
    b5:pvc   written-on-pvc
@@ -0,0 +1,17 @@
 # B-5 — Redis 상실과 영속화 증거
 2026-09-04 15:35–15:50 KST
 해설: [`docs/experiment-b5-redis-loss-persistence.md`](../../experiment-b5-redis-loss-persistence.md)
 | 파일 | 무엇을 보여주는가 |
 |---|---|
 | `01-baseline.txt` | 정지 전 — Redis 1키, PostgreSQL 1행, `save`/`appendonly no`, 외부 200 |
 | `02-redis-down.txt` | 정지 후 — `/bff/token-boundary` **`HTTP 000`(멈춤)**, `/actuator/health` 503, **파드는 1/1 Ready 유지**, Lettuce 재연결 스택 |
 | `03-health-groups.txt` | **핵심** — `/actuator/health` 503 인데 `/actuator/health/readiness` 는 `{"status":"UP"}`. Service 엔드포인트에 두 파드 모두 남아 있다 |
 | `04-persistence.txt` | 복구는 자동(재시작 0회) · **AOF 를 켰는데 파드 삭제 후 `dbsize 0`** · PVC 를 붙인 뒤 `written-on-pvc` **생존** |
 ## 핵심 세 줄
 1. **파드가 Ready 를 유지한 채 계속 실패한다.** `redis` 헬스 지표가 readiness 그룹에 없기 때문이며, A-2 에서 Keycloak 이 NotReady 가 된 것과 정반대다.
 2. **오류가 아니라 멈춤이다.** `HTTP 000` — 빠른 실패가 안 되어 있어 사용자는 멈춘 화면을 본다.
 3. **볼륨 없이 AOF 만 켜는 것은 장식이다.** `appendonlydir` 까지 만들어지지만 컨테이너와 함께 사라진다.
@@ -0,0 +1,9 @@
 === [1] 회전 전: 토큰 발급 + JWKS 상태 ===
  발급 토큰의 kid: OY-caYDNGoP4HMAz-Q9UPTU-DM1i896NuzUZu6gfCqM
  JWKS 의 RS256 키 수: 1
  JWKS kid 목록:
    {"keys":[{"kid":"gokjn0zFUok8r7JVqW1cxuyojH1bTT87vzfQG9RrFX4"
    {"kid":"OY-caYDNGoP4HMAz-Q9UPTU-DM1i896NuzUZu6gfCqM"
 === [2] 그 토큰이 지금 통하는가 (리소스 서버) ===
  /api/me  HTTP 200
@@ -0,0 +1,16 @@
 === [3] 키 회전 — 우선순위가 더 높은 RSA 공급자를 추가한다 ===
 Created new component with id '7902af43-a0cc-4ebd-ad25-04d563854d16'
 === [4] 회전 후 JWKS — 옛 키가 남아 있는가 ===
  RS256 키 수: 2
  kid 목록:
    {"keys":[{"kid":"1B4AQHoxZvFaQi1tc1byz8ifU-nYFB6engD4YB4Fz84"
    {"kid":"gokjn0zFUok8r7JVqW1cxuyojH1bTT87vzfQG9RrFX4"
    {"kid":"OY-caYDNGoP4HMAz-Q9UPTU-DM1i896NuzUZu6gfCqM"
 === [5] 새 토큰은 어느 키로 서명되는가 ===
  새 토큰의 kid: 1B4AQHoxZvFaQi1tc1byz8ifU-nYFB6engD4YB4Fz84
 === [6] ★ 회전 전에 발급된 토큰은 아직 통하는가 ===
  옛 토큰  /api/me  HTTP 200
  새 토큰  /api/me  HTTP 200
@@ -0,0 +1,16 @@
 === [7] 옛 RSA 공급자(980ee9b7 = OY-caYDN 키) 제거 ===
  제거 완료
 === [8] JWKS 에서 사라졌는가 ===
  RS256 키 수: 1
    {"keys":[{"kid":"1B4AQHoxZvFaQi1tc1byz8ifU-nYFB6engD4YB4Fz84"
    {"kid":"gokjn0zFUok8r7JVqW1cxuyojH1bTT87vzfQG9RrFX4"
 === [9] ★ 옛 키로 서명된 토큰은 이제 어떻게 되는가 ===
  옛 토큰  /api/me  HTTP 401  (캐시가 살아 있으면 아직 통할 수 있다)
  새 토큰  /api/me  HTTP 200
 === [10] 리소스 서버를 재시작해 JWKS 캐시를 비우면 ===
 deployment "echo" successfully rolled out
  옛 토큰  /api/me  HTTP 401
  새 토큰  /api/me  HTTP 200
@@ -0,0 +1,16 @@
 # B-6 — key 회전 증거
 2026-09-04 15:50–16:00 KST
 해설: [`docs/experiment-b6-key-rotation.md`](../../experiment-b6-key-rotation.md)
 | 파일 | 무엇을 보여주는가 |
 |---|---|
 | `01-before-rotation.txt` | 회전 전 — 토큰 `kid=OY-caYDN...`, JWKS RS256 1개, `/api/me` 200 |
 | `02-rotation.txt` | 우선순위 200 공급자 추가 → **JWKS RS256 2개**, 새 토큰은 새 kid, **옛 토큰도 새 토큰도 200** (무중단) |
 | `03-old-key-removed.txt` | 옛 공급자 제거 → JWKS 1개, **옛 토큰 즉시 401**. 리소스 서버 재시작 후에도 동일 |
 ## 핵심 세 줄
 1. **Keycloak 의 키 회전은 "바꾸기"가 아니라 "더 높은 우선순위로 추가하기"** 다. 추가만으로는 아무것도 안 깨진다.
 2. **위험한 것은 옛 키를 버리는 시점이다.** 제거 즉시 그 키로 서명된 토큰이 401 이 된다.
 3. **캐시는 유예가 아니다.** 모르는 `kid` 를 만나면 JWKS 를 다시 받으므로 제거가 곧바로 반영된다. 유예는 옛 키를 남겨두는 기간으로 만들어야 한다.
@@ -0,0 +1,13 @@
 === Grafana ingress 를 잠시 내린다 (app2 를 빌린다) ===
  grafana ingress 삭제
 secret/oauth2-proxy-secrets created
 deployment.apps/oauth2-proxy created
 service/oauth2-proxy created
 ingress.networking.k8s.io/oauth2-proxy created
 deployment "oauth2-proxy" successfully rolled out
 oauth2-proxy-c76b49c59-8p5hl   true   kc-lab-1
 oauth2-proxy-c76b49c59-b9928   true   kc-lab-2
 === 진입점 확인 ===
  https://app2.hyeonworks.com/  HTTP 302
  /ping                         HTTP 200
@@ -0,0 +1,9 @@
 === curl 로 OAuth 흐름을 완주한다 (nginx 우회, Traefik 직접) ===
  로그인 폼 action: https://auth.hyeonworks.com/realms/keycloak-patterns/login-actions/authenticate?session_co...
  쿠키 항아리:
                                 len=0
    KC_AUTH_SESSION_HASH         len=64
 === 두 replica 모두 이 쿠키를 받아들이는가 ===
  10.42.1.135    /oauth2/auth  HTTP 000
  10.42.1.134    /oauth2/auth  HTTP 000
@@ -0,0 +1,31 @@
 === 세션이 Redis 에 들어갔는가 ===
 b5:pvc
 _oauth2_proxy-b26111fbd1fdab3ae2182e287001b02a
  dbsize: 2
 === oauth2-proxy 가 cookie secret 을 여러 개 받는가 ===
        --cookie-secret string                                the seed string for secure cookies (optionally base64 encoded)
 === ★ secret 을 A → B 로 교체한다 ===
 deployment.apps/oauth2-proxy patched
 deployment "oauth2-proxy" successfully rolled out
  현재 secret 키: COOKIE_SECRET_B
  Redis 세션은 그대로인가: 2 키
 === secret 교체 후 oauth2-proxy 로그 — 옛 쿠키를 어떻게 처리했나 ===
 [2026/09/04 05:41:46] [oauthproxy.go:178] Cookie settings: name:_oauth2_proxy secure(https):true httponly:true expiry:1h0m0s domains: path:/ samesite: refresh:disabled
 [2026/09/04 05:42:18] [oauthproxy.go:1024] No valid authentication in request. Initiating login.
 100.123.124.30 - cb8c0ec1-1d87-479c-9aef-e1d9158a5829 - - [2026/09/04 05:42:18] app2.hyeonworks.com GET - "/api/echo" HTTP/1.1 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, lik
 [2026/09/04 05:42:18] [stored_session.go:94] Error loading cookied session: session ticket cookie failed validation: <nil>, removing session
 [2026/09/04 05:42:18] [stored_session.go:97] Error removing session: error decoding ticket to clear session: session ticket cookie failed validation: <nil>
 100.123.124.30 - 28af938f-08b5-4e15-9094-8d9591a18a3f - labuser@example.com [2026/09/04 05:42:18] app2.hyeonworks.com GET / "/api/echo" HTTP/1.1 "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/
 [2026/09/04 05:41:58] [providers.go:146] Warning: Your provider supports PKCE methods ["plain" "S256"], but you have not enabled one with --code-challenge-method
 [2026/09/04 05:41:58] [oauthproxy.go:172] OAuthProxy configured for OpenID Connect Client ID: oauth2-proxy
 [2026/09/04 05:41:58] [oauthproxy.go:178] Cookie settings: name:_oauth2_proxy secure(https):true httponly:true expiry:1h0m0s domains: path:/ samesite: refresh:disabled
 100.123.124.30 - 5a08219f-60e0-4c97-bfee-78cae8891ca8 - labuser@example.com [2026/09/04 05:42:18] [AuthSuccess] Authenticated via OAuth2: Session{email:labuser@example.com user:27df5ea9-8703
 100.123.124.30 - 5a08219f-60e0-4c97-bfee-78cae8891ca8 - - [2026/09/04 05:42:18] app2.hyeonworks.com GET - "/oauth2/callback?state=j7eKInWCrYqRyi5LVDGDjtLrIBJCpwdkmzoJVdhJUc0%3A%2Fapi%2Fecho&
 100.123.124.30 - a3074807-5143-49b9-b77c-e7e2eb90ac24 - labuser@example.com [2026/09/04 05:42:18] app2.hyeonworks.com GET / "/favicon.ico" HTTP/1.1 "Mozilla/5.0 (X11; Linux x86_64) AppleWebK
 === Redis 세션 수 (옛 세션이 남아 있는가) ===
  _oauth2_proxy-978dfaefbdadccb96c7be1625dba5616
  _oauth2_proxy-b26111fbd1fdab3ae2182e287001b02a
  총: 2 개
@@ -0,0 +1,18 @@
 # B-7 — oauth2-proxy cookie secret 교체 증거
 2026-09-04 16:00–16:15 KST
 해설: [`docs/experiment-b7-cookie-secret-rotation.md`](../../experiment-b7-cookie-secret-rotation.md)
 | 파일 | 무엇을 보여주는가 |
 |---|---|
 | `01-deploy.txt` | 양 노드에 replica 하나씩. `/` 302, `/ping` 200 |
 | `02-cookie-portability.txt` | curl 로 흐름을 완주하려던 시도 — 파드 IP 는 호스트에서 안 닿는다 |
 | `03-rotation.txt` | **`--cookie-secret string` 단수 확인** · 교체 후 `session ticket cookie failed validation` · **`Error removing session`** · Redis 에 **고아 세션 2개** |
 | `b7-oauth2proxy-login-success.png` | Redis 세션 전환 후 성공한 Forward-Auth — `x-forwarded-user/email/preferred-username` 과 **티켓 형태 쿠키** |
 ## 핵심 네 줄
 1. **BFF 와 정반대다.** 인가 요청이 쿠키에 있어 **콜백이 다른 replica 로 가도 성공**한다 — B-0 에서 BFF 가 실패한 바로 그 지점.
 2. **502 의 원인은 큰 쿠키였다.** Traefik 직접은 정상이고 nginx 만 502 — B-4 의 헤더 절벽이 응답 쪽에서 재현됐다.
 3. **겹침 구간을 만들 수 없다.** `--cookie-secret` 이 단수라 B-6 의 무중단 회전이 불가능하다.
 4. **교체하면 서버 세션이 고아로 남는다.** 티켓을 못 푸니 지울 수도 없다.
@@ -0,0 +1,11 @@
 === 깨끗한 상태로 초기화 ===
 DELETE 1
 === 기준선 ===
  Keycloak 온라인 세션: 4
  Redis 키: 0
 === 두 앱의 구조 ===
  app1.hyeonworks.com  →  BFF        (서버 세션: Redis + PostgreSQL)
  app2.hyeonworks.com  →  oauth2-proxy (쿠키 티켓 + Redis)
  둘 다 realm keycloak-patterns 를 쓴다
@@ -0,0 +1,9 @@
 === app1 로그인 직후 Keycloak 세션 ===
     user_session_id      | client_sessions 
 --------------------------+-----------------
 oqOjHekin4JU-BZjgQLjUByW |               1
 (1 row)
  Redis 키: 1
    bff:session:sessions:6e0d9af4-2c8f-47d2-bf83-8b1e9670c679
  PostgreSQL authorized client: 1 행
@@ -0,0 +1,20 @@
 === app2 방문 후 — 로그인 화면 없이 통과했는가 ===
     user_session_id      | client_sessions 
 --------------------------+-----------------
 oqOjHekin4JU-BZjgQLjUByW |               2
 (1 row)
 === 어느 클라이언트가 붙었는가 ===
              client_id               |       name       
 --------------------------------------+------------------
 9055fa46-6abb-4d6d-a339-8a9183bbf26d | bff-confidential
 80431dbc-af81-4673-9790-ad06d1570b2e | oauth2-proxy
 (2 rows)
 === 저장소 상태 ===
  Redis 키:
    _oauth2_proxy-6b028a70f69c8f0da9966eb36972dff2
    bff:session:sessions:6e0d9af4-2c8f-47d2-bf83-8b1e9670c679
  PostgreSQL authorized client: 1 행
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
DongHyeonkaandClaude Opus 5	e0d27d47ce	docs: correct the places where documents contradicted their own evidence An independent audit found ten documents printing values their evidence files do not contain. C-1 printed a session count of 0 where the evidence says 4, C-2 printed a success readback for a command that exited 1, and A-1 credited the conntrack flush with a split that the timestamps attribute to a pod restart four seconds earlier. Also measured wal_writer_delay, which A-3 had asserted as matching without ever querying it, relabelled the A-6 control that moved 41 percent, noted A-8's nine-sample resolution, corrected D-1's RTO to the 41 seconds its own timeline shows, and added a correction banner to D-2. Every experiment document now links its evidence files with their real collection times, and the duplicate screenshots are documented as duplicates. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 16:35:49 +09:00
DongHyeonkaandClaude Opus 5	78b270559c	docs: add SVG diagrams, explicit concept sections and the diagram convention Twelve SVG architecture diagrams cover the experiments whose documents had little or no structure drawing, embedded under a 구조 heading with a shared convention file. Seven documents carried their concepts under narrative headings and now have an explicit 개념 section so they can be found. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 16:20:05 +09:00
DongHyeonkaandClaude Opus 5	98a74e90a5	docs: fill the untested items and record why the B layer has no graphs The forward upgrade to 26.7.3 was zero downtime across 87 samples, and since databasechangelog stayed at 210 the rollback to 26.7.0 also succeeded, which narrows D-2's conclusion: rolling back fails when the schema moved, not because of the version number. The row count is the check. Role changes never reach the upstream through request repetition; the session is a snapshot taken at login and only a new session picks up the new claim. Auditing the docs also surfaced that Prometheus scrapes only keycloak, kubelet, node-exporter and itself, so the B-layer experiments have no metrics to screenshot rather than missing screenshots. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 16:18:33 +09:00
DongHyeonkaandClaude Opus 5	b5528fae87	docs: index all 23 experiments with what each measured One table per experiment with its branch and result, plus the nine injections that silently did nothing and the five predictions that turned out wrong. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 15:11:32 +09:00
DongHyeonkaandClaude Opus 5	4864d837f1	docs: D-4 — the certificate is fine and the renewal itself went untested Three SAN entries and no wildcard is the constraint that cost something real in B-7, where oauth2-proxy had to borrow Grafana's app2 hostname because a fourth name was not available. The served chain is four deep and verifies, so fullchain.pem is configured rather than the cert.pem mistake that only breaks clients without a cached intermediate. The forced renewal and the reload behaviour could not be measured because sudo on the host asks for a password, the same silent failure first noticed in B-7. nginx reload is graceful by design, but this lab has repeatedly shown that by design is not the same as measured, so it is recorded as untested rather than assumed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 15:09:36 +09:00
DongHyeonkaandClaude Opus 5	027c24ee27	docs: D-3 — only RBAC actually hides anything Every secret in the lab prints in four commands, while kubectl describe shows just a byte count and creates the impression that something is hidden. k3s reports encryption at rest disabled and the plaintext password is present in state.db, so one node disk carries the whole cluster's secrets, and inside the pod they are ordinary environment variables visible to exec, /proc and crash dumps. The default service account cannot read secrets, which makes RBAC the one control doing real work here and the thing worth tightening. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 15:07:35 +09:00
DongHyeonkaandClaude Opus 5	df140ab218	docs: D-2 — rolling back the image does not roll back the schema Downgrading from 26.7.0 to 26.0 fails with liquibase ValidationFailedException on a changeset checksum, which is stricter than an unknown migration: the old version knows the changeset but its definition differs. The pod goes CrashLoopBackOff and never starts. The StatefulSet stopped the rollout at the first pod, so the other kept serving and the front door stayed at 200, which replica 1 would not have done. The failed start never touched the schema, so restoring the image was enough; had the migration already applied, the D-1 database restore would have been the only way back. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 15:05:36 +09:00
DongHyeonkaandClaude Opus 5	df5af95cb3	docs: D-1 — an empty database still answered 200 Dropping the schema left Keycloak serving realm metadata and JWKS from its Infinispan cache, so the front door stayed at 200 while only the paths that read the database failed. That is a different shape from A-2, where the connection itself broke and readiness pulled the pods out of the Service; here the connection is fine and the tables are simply gone, which the health check does not notice. Restoring the pg_dump took one second with zero errors and no pod restart, and the row counts matched the backup exactly, sessions included. The real RPO is the backup interval plus the synchronous_commit loss measured in A-3, and this dump sits in the host's /tmp, which is the same failure domain as the thing it protects. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:59:56 +09:00
DongHyeonkaandClaude Opus 5	6c310c93b7	docs: C-2 — nothing propagates because nobody implemented the receiving end Neither client had a backchannel logout URL and the BFF has no oidcLogout configuration, so the three candidate paths all answer 302, which is the authentication redirect rather than a handler. Setting the URL on the identity provider alone changed nothing: with a live session, logging the user out emptied the Keycloak side and left the Redis session untouched. Reachability is not the blocker here, since a Keycloak pod fetches the app's public URL with a 200, but that is a property of this tailnet split-DNS lab and is the assumption most likely to fail in production, where it fails silently. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:56:58 +09:00
DongHyeonkaandClaude Opus 5	e856e7af4d	docs: C-1 — killing the SSO session logs nobody out One user session carries a client session per application, so visiting the second app skips the login screen. Deleting the identity provider session leaves both application sessions untouched and both apps keep serving, because the identity provider, the application session and the access token each have their own lifetime. That inverts the B-2 finding: there the app session was cleared and the surviving SSO session let the user straight back in. Either way, clearing one side leaves the other. It also means an identity provider outage is a single point of failure for logging in, not for already-authenticated users, and the failure arrives late and all at once. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:49:36 +09:00
DongHyeonkaandClaude Opus 5	bcb563a04e	docs: B-7 — the cookie secret has no overlap window and rotation orphans sessions oauth2-proxy carries the authorization request in a signed cookie, so the callback can land on a different replica and still succeed, which is the opposite of the BFF failure in B-0. Sharing is therefore just sharing one Secret. Rotating it is all-or-nothing: --cookie-secret is singular, so there is no second key to read old tickets with, and the log shows both the validation failure and Error removing session, leaving the Redis session orphaned because the key cannot be derived from a ticket that will not decode. Getting there required two diagnoses: the callback 502 came from the full session riding in Set-Cookie past nginx's buffer, and every earlier attempt to read nginx config returned nothing because sudo on the host asks for a password while the guests do not. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:44:00 +09:00
DongHyeonkaandClaude Opus 5	aa2c3907f5	docs: B-6 — rotation is safe, retiring the old key is not Adding a higher-priority RSA provider leaves both kids in JWKS, so tokens signed before and after the rotation both validate. Deleting the old provider makes its tokens 401 immediately, and the resource server's JWKS cache does not buy a grace period because an unknown kid triggers a refetch. The encryption key Q3 asks about does not exist yet, since B-2 showed the tokens are stored as plaintext JWTs, so the measured signing-key rotation is what its design has to copy: write with one key, read with several, and keep the overlap longer than the lifetime of anything signed with the old one. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:33:42 +09:00
DongHyeonkaandClaude Opus 5	f45a2a2aaa	docs: B-5 — the pod stays Ready while every request hangs Stopping Redis returns HTTP 000 rather than an error because the client waits on reconnect, and the pod keeps serving traffic because the redis health indicator is not in the readiness group even though /actuator/health returns 503. That is the mirror image of A-2, where Keycloak put its database check in readiness and the pods left the Service. Turning on AOF with config set created the appendonlydir and still lost everything on pod deletion, because /data was the container filesystem; adding a PVC makes the same setting work. Volume first, persistence setting second. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:29:17 +09:00
DongHyeonkaandClaude Opus 5	7dc0a3e5da	docs: B-4 — the edge does not overwrite the headers it never sets Two headers of the same name both arrive rather than one overwriting the other, because nginx only replaces headers it sets with proxy_set_header. A comma inside a role name is indistinguishable from the delimiter, and the size limit is a cliff: Tomcat returns 400 around 8KB and the connection dies around 16KB, so the same cause produces two different-looking failures. Forged identity headers reach the upstream untouched while the JWT-protected paths return 401, which is Q4's own point that a header-fed upstream has nothing to verify against. By Q4's checklist that answer alone points at the BFF structure. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:23:41 +09:00
DongHyeonkaandClaude Opus 5	b16e1dccf7	docs: B-3 — concurrent refresh does not lose a race, it destroys the session Five simultaneous refreshes with one token return a single 200, and that winner's new token is already dead. Reuse detection removes the client session while the user session stays, which is why the other responses read Session doesn't have required client rather than a reuse error. Comparing policies shows rotation off passes all five and keeps the session, while raising refreshTokenMaxReuse to one still destroys it. Since no retry can recover a removed client session, Q2's own criterion resolves to a lock, and a database row lock is the natural place because its lifetime is tied to the connection. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:20:04 +09:00
DongHyeonkaandClaude Opus 5	711878379c	docs: B-2 — sharing the stores fixes one problem and exposes three more Moving the authorized client to JdbcOAuth2AuthorizedClientService makes tokens work across replicas, so the session-in-Redis plus tokens-in-PostgreSQL split holds. The table then shows what sharing cannot fix: the primary key is (client_registration_id, principal_name) with no session in it, so a second login for the same user updates the same row rather than adding one. The refresh token sits in bytea as the raw JWT, readable with convert_from, and logout clears only the Redis session while the plaintext token row and the Keycloak SSO session both survive. The schema itself failed silently first because the default DDL uses blob, which PostgreSQL does not have, and continue-on-error swallowed it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-04 14:15:05 +09:00
		`@@ -0,0 +1,2 @@`
							`[ 6898ms] [ERROR] Failed to load resource: the server responded with a status of 403 () @ https://app1.hyeonworks.com/logout:0`
							`[ 23950ms] [ERROR] Failed to load resource: the server responded with a status of 403 () @ https://app1.hyeonworks.com/logout:0`
		`@@ -0,0 +1,2 @@`
							`[ 275ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=G2-BDWkehNWO7hGwhYCxXBVRKZ6AomLIrSLBtIXr0Gw%3A%2Fapi%2Fecho&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=4155f58e-6a58-e47b-93bd-7e2b625c2b91.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0`
							`[ 408ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=Da-7OcMB4f7vyHgr-6CqrTtJpmj1R_SfRfcE3CUJNzE%3A%2Ffavicon.ico&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=96d66247-91b0-0cc1-89dc-e527c2b69bf2.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0`
		`@@ -0,0 +1,2 @@`
							`[ 266ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=TZnQvjIWCEySrf4PMg2WLVFoOfkyOJWB58f2LGjVfpo%3A%2Fapi%2Fecho&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=8ae913a1-2647-0ed9-625e-3d80e1565024.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0`
							`[ 416ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=uAYwZp59ncz95XjkJXAlIgsT7oksBQBViiQS07t2eow%3A%2Ffavicon.ico&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=7b7fc816-0b27-93a0-83b8-656488813253.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0`
		`@@ -0,0 +1,2 @@`
							`[ 287ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=0EOFj1PoLyPil0dgukpi7zKW4JKnGZTP9Wj6EhTR-lw%3A%2Fapi%2Fecho&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=d13cc206-133f-00a9-9908-599988c4d7cf.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0`
							`[ 457ms] [ERROR] Failed to load resource: the server responded with a status of 502 () @ https://app2.hyeonworks.com/oauth2/callback?state=kbYC5O4_ELsoQFw85vyYfgWEqlI2yWImB4rmelbmSTM%3A%2Ffavicon.ico&session_state=vsW8xDlLJN3DUl-0B-X1WL7Q&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=91f9fde9-f376-b6f3-4622-a1ba674cc4fd.vsW8xDlLJN3DUl-0B-X1WL7Q.80431dbc-af81-4673-9790-ad06d1570b2e:0`
		`@@ -0,0 +1 @@`
							`[ 307ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0`
		`@@ -0,0 +1 @@`
							`[ 261ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0`
		`@@ -0,0 +1 @@`
							`[ 882ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0`
		`@@ -0,0 +1 @@`
							`[ 178ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0`
		`@@ -0,0 +1,2 @@`
							`[ 19340ms] [ERROR] Failed to load resource: the server responded with a status of 403 () @ https://app2.hyeonworks.com/oauth2/callback?state=rKipZCUv8W5a-xgYheJbjBsInoD5Il1AaF1RlM_RB2s%3A%2Fapi%2Fecho&session_state=Mw52KcQijFB9Bq4rN-C4SF5Y&iss=https%3A%2F%2Fauth.hyeonworks.com%2Frealms%2Fkeycloak-patterns&code=f9a4835a-2af3-b886-bd04-10b5347ee8d2.Mw52KcQijFB9Bq4rN-C4SF5Y.80431dbc-af81-4673-9790-ad06d1570b2e:0`
							`[ 20374ms] [ERROR] Failed to load resource: the server responded with a status of 401 () @ https://app2.hyeonworks.com/favicon.ico:0`