[BUG] Unexpected KeyDB Container Restart with Reason "Completed" in Kubernetes StatefulSet

[persikida]

Describe the bug

When running image docker.io/eqalpha/keydb:x86_64_v6.3.2in Kubernetes StatefulSet, the container unexpectedly terminates with the status "Completed", despite no manual shutdown being initiated.

lastState: terminated: containerID: containerd://8cb24568ab14bd0579427dd04505ad2fea2a0ea685ef63e4c64579b8f5f92888 exitCode: 0 finishedAt: "2025-02-26T08:39:54Z" reason: Completed startedAt: "2025-01-18T07:30:35Z" restartCount: 2

KeyDB was running for over 39 days before this unexpected termination

To reproduce

1. Deploy KeyDB v6.3.2 in a Kubernetes StatefulSet
2. Ensure it runs continuously for multiple weeks with default settings
3. Observe pod termination with exitCode: 0 and reason: Completed without user intervention
4. Check logs (kubectl logs keydb --previous) for any shutdown and SIGTERM messages

Expected behavior

KeyDB should not terminate itself unless explicitly shut down. The pod also should only restart if Kubernetes triggers it (SIGTERM)

Logs before the restart:

1:22:S 26 Feb 2025 06:30:06.901 * Background saving terminated with success 1:22:S 26 Feb 2025 06:35:07.089 * 10 changes in 300 seconds. Saving... 1:22:S 26 Feb 2025 06:35:07.090 * Background saving started 1:2875:S 26 Feb 2025 06:35:07.283 * DB saved on disk 1:2875:S 26 Feb 2025 06:35:07.287 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 06:35:07.291 * Background saving terminated with success 1:22:S 26 Feb 2025 07:00:06.408 * 1 changes in 900 seconds. Saving... 1:22:S 26 Feb 2025 07:00:06.408 * Background saving started 1:8730:S 26 Feb 2025 07:00:06.652 * DB saved on disk 1:8730:S 26 Feb 2025 07:00:06.656 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 07:00:06.711 * Background saving terminated with success 1:22:S 26 Feb 2025 07:05:07.069 * 10 changes in 300 seconds. Saving... 1:22:S 26 Feb 2025 07:05:07.069 * Background saving started 1:9907:S 26 Feb 2025 07:05:07.298 * DB saved on disk 1:9907:S 26 Feb 2025 07:05:07.302 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 07:05:07.370 * Background saving terminated with success 1:22:S 26 Feb 2025 07:20:08.090 * 1 changes in 900 seconds. Saving... 1:22:S 26 Feb 2025 07:20:08.090 * Background saving started 1:13430:S 26 Feb 2025 07:20:08.538 * DB saved on disk 1:13430:S 26 Feb 2025 07:20:08.540 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 07:20:08.606 * Background saving terminated with success 1:22:S 26 Feb 2025 07:30:10.975 * 10 changes in 300 seconds. Saving... 1:22:S 26 Feb 2025 07:30:10.975 * Background saving started 1:15780:S 26 Feb 2025 07:30:11.206 * DB saved on disk 1:15780:S 26 Feb 2025 07:30:11.210 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 07:30:11.278 * Background saving terminated with success 1:22:S 26 Feb 2025 07:45:12.037 * 1 changes in 900 seconds. Saving... 1:22:S 26 Feb 2025 07:45:12.037 * Background saving started 1:19287:S 26 Feb 2025 07:45:12.413 * DB saved on disk 1:19287:S 26 Feb 2025 07:45:12.416 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 07:45:12.449 * Background saving terminated with success 1:22:S 26 Feb 2025 08:00:12.781 * 10 changes in 300 seconds. Saving... 1:22:S 26 Feb 2025 08:00:12.781 * Background saving started 1:22790:S 26 Feb 2025 08:00:12.999 * DB saved on disk 1:22790:S 26 Feb 2025 08:00:13.001 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 08:00:13.084 * Background saving terminated with success 1:22:S 26 Feb 2025 08:15:14.083 * 1 changes in 900 seconds. Saving... 1:22:S 26 Feb 2025 08:15:14.084 * Background saving started 1:26341:S 26 Feb 2025 08:15:14.304 * DB saved on disk 1:26341:S 26 Feb 2025 08:15:14.307 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 08:15:14.386 * Background saving terminated with success 1:22:S 26 Feb 2025 08:30:11.271 * 10 changes in 300 seconds. Saving... 1:22:S 26 Feb 2025 08:30:11.271 * Background saving started 1:29848:S 26 Feb 2025 08:30:11.488 * DB saved on disk 1:29848:S 26 Feb 2025 08:30:11.490 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 08:30:11.574 * Background saving terminated with success 1:22:S 26 Feb 2025 08:39:24.002 * 10 changes in 300 seconds. Saving... 1:22:S 26 Feb 2025 08:39:24.003 * Background saving started 1:32023:S 26 Feb 2025 08:39:24.253 * DB saved on disk 1:32023:S 26 Feb 2025 08:39:24.257 * RDB: 40 MB of memory used by copy-on-write 1:22:S 26 Feb 2025 08:39:24.307 * Background saving terminated with success 1:signal-handler (1740559193) Received SIGTERM scheduling shutdown... 1:22:S 26 Feb 2025 08:39:53.711 # User requested shutdown... 1:22:S 26 Feb 2025 08:39:53.711 * Saving the final RDB snapshot before exiting. 1:22:S 26 Feb 2025 08:39:54.027 * DB saved on disk 1:22:S 26 Feb 2025 08:39:54.027 * Removing the pid file. 1:22:S 26 Feb 2025 08:39:54.029 # KeyDB is now ready to exit, bye bye...

Additional information

KeyDB Version: v6.3.2 Deployment type: Kubernetes StatefulSet Liveness Probe:

livenessProbe: exec: command: - sh - -c - /health/ping_liveness_local.sh 5 failureThreshold: 5 initialDelaySeconds: 20 periodSeconds: 5 successThreshold: 1 timeoutSeconds: 6

Readiness Probe:

readinessProbe: exec: command: - sh - -c - /health/ping_readiness_local.sh 1 failureThreshold: 5 initialDelaySeconds: 20 periodSeconds: 5 successThreshold: 1 timeoutSeconds: 2

Persistence Enabled: Yes (PVC Attached)