DongHyeonkaandClaude Opus 5
dba0c3975c
Nine database round trips per login multiply the injected delay to 1.9 seconds, and connection pool queueing multiplies it again under twenty concurrent requests. The readiness probe joins the same queue and times out, so the node leaves the load balancer and pushes its load onto the one still standing. Two injections missed first: the guest interface is enp1s0 rather than eth0, and a filter on it can never match a pod IP because flannel has already encapsulated the packet. The delay has to go on flannel.1, before encapsulation. The predicted rise in optimistic lock conflicts did not happen, because logins insert new rows rather than contending for one. That belongs to B-3. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
38 lines
1.5 KiB
Plaintext
38 lines
1.5 KiB
Plaintext
=== 동시 부하 20건을 keycloak-1 에 — 커넥션 풀이 견디는가 ===
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1 200 1.911191
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1 200 1.981620
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1 200 10.539402
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=== 부하 직후 커넥션 풀 ===
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agroal_blocking_time_max_milliseconds 20000.0
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agroal_max_used_count 19.0
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agroal_acquire_count_total 672.0
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agroal_active_count 0.0
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agroal_awaiting_count 0.0
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agroal_blocking_time_average_milliseconds 281.0
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agroal_available_count 19.0
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=== readiness 가 흔들렸는가 ===
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keycloak-0 1/1 Running 0 60m
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keycloak-1 1/1 Running 1 (51m ago) 3h24m
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52m Normal TaintManagerEviction pod/keycloak-1 Cancelling deletion of Pod keycloak-lab/keycloak-1
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32m Warning Unhealthy pod/keycloak-1 Readiness probe failed: HTTP probe failed with statuscode: 503
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89s Warning Unhealthy pod/keycloak-1 Readiness probe failed: Get "http://10.42.0.42:9000/health/ready": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
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