=== 02 · API 서버 인증서 SAN ===
X509v3 Subject Alternative Name: 
    DNS:kubernetes, DNS:kubernetes.default, DNS:kubernetes.default.svc, DNS:kubernetes.default.svc.cluster.local, DNS:localhost, DNS:kc-lab-1, IP Address:127.0.0.1, IP Address:0:0:0:0:0:0:0:1, IP Address:192.168.122.11, IP Address:10.43.0.1, IP Address:192.168.122.11

=== 02 · journalctl -u k3s (서버) 끝 6줄 ===
Sep 17 07:37:32 kc-lab-1 k3s[1024]: I0917 07:37:32.358989    1024 reconciler_common.go:299] "Volume detached for volume \"kube-api-access-49x4f\" (UniqueName: \"kubernetes.io/projected/b2a26eb4-c671-4681-b67f-77e47966b53b-kube-api-access-49x4f\") on node \"kc-lab-1\" DevicePath \"\""
Sep 17 07:37:32 kc-lab-1 k3s[1024]: I0917 07:37:32.501306    1024 scope.go:122] "RemoveContainer" containerID="21a239d442f2d69328ebf52e5b29e6706a93f62c622ae201284313a983839424"
Sep 17 07:37:32 kc-lab-1 k3s[1024]: I0917 07:37:32.962363    1024 kubelet_volumes.go:161] "Cleaned up orphaned pod volumes dir" podUID="b2a26eb4-c671-4681-b67f-77e47966b53b" path="/var/lib/kubelet/pods/b2a26eb4-c671-4681-b67f-77e47966b53b/volumes"
Sep 17 07:40:08 kc-lab-1 k3s[1024]: time="2026-09-17T07:40:08Z" level=info msg="COMPACT compactRev=9376 targetCompactRev=9685 currentRev=10685"
Sep 17 07:40:08 kc-lab-1 k3s[1024]: time="2026-09-17T07:40:08Z" level=info msg="COMPACT deleted 380 rows from 309 revisions in 9.152746ms - compacted to 9685/10685"
Sep 17 07:40:08 kc-lab-1 k3s[1024]: time="2026-09-17T07:40:08Z" level=info msg="COMPACT compacted from 9376 to 9685 in 1 transactions over 9ms"

=== 02 · journalctl -u k3s-agent (에이전트) 끝 6줄 ===
Sep 17 07:42:16 kc-lab-2 k3s[2644]: E0917 07:42:16.919786    2644 conn.go:353] "Error on socket receive" err="read tcp 127.0.0.1:10250->127.0.0.1:55428: use of closed network connection"
Sep 17 07:42:17 kc-lab-2 k3s[2644]: E0917 07:42:17.005337    2644 conn.go:353] "Error on socket receive" err="read tcp 127.0.0.1:10250->127.0.0.1:55436: use of closed network connection"
Sep 17 07:42:17 kc-lab-2 k3s[2644]: E0917 07:42:17.092765    2644 conn.go:353] "Error on socket receive" err="read tcp 127.0.0.1:10250->127.0.0.1:55450: use of closed network connection"
Sep 17 07:42:24 kc-lab-2 k3s[2644]: E0917 07:42:24.627959    2644 conn.go:353] "Error on socket receive" err="read tcp 127.0.0.1:10250->127.0.0.1:40132: use of closed network connection"
Sep 17 07:42:25 kc-lab-2 k3s[2644]: E0917 07:42:25.072360    2644 conn.go:353] "Error on socket receive" err="read tcp 127.0.0.1:10250->127.0.0.1:40148: use of closed network connection"
Sep 17 07:42:26 kc-lab-2 k3s[2644]: E0917 07:42:26.574554    2644 conn.go:353] "Error on socket receive" err="read tcp 127.0.0.1:10250->127.0.0.1:40158: use of closed network connection"
