spring-boot - 如何识别 pod 重启活动是由 Spring Boot Log 中的 Liveness Probe 触发的？

Question

我正在使用 Spring Boot 应用程序。我已经使用 REST API 端点包含了 http liveness probe config。因此，只要 REST API 无法访问，Kubernetes 就会重新启动 pod。

问题是，我需要确定是否有任何方法可以区分由 Liveness Probe 触发的 Pod 重启活动与部署团队完成的手动重启。

每当重新启动 Pod 时，Kubernetes 是否会在 Spring Boot 日志中包含任何类型的日志消息？

Answer 1

如果您描述了 pod，您应该Liveness probe failed会在活性探测失败时看到一条消息。

kubectl describe pod liveness-exec

FirstSeen LastSeen    Count   From            SubobjectPath           Type        Reason      Message
--------- --------    -----   ----            -------------           --------    ------      -------
37s       37s     1   {default-scheduler }                    Normal      Scheduled   Successfully assigned liveness-exec to worker0
36s       36s     1   {kubelet worker0}   spec.containers{liveness}   Normal      Pulling     pulling image "k8s.gcr.io/busybox"
36s       36s     1   {kubelet worker0}   spec.containers{liveness}   Normal      Pulled      Successfully pulled image "k8s.gcr.io/busybox"
36s       36s     1   {kubelet worker0}   spec.containers{liveness}   Normal      Created     Created container with docker id 86849c15382e; Security:[seccomp=unconfined]
36s       36s     1   {kubelet worker0}   spec.containers{liveness}   Normal      Started     Started container with docker id 86849c15382e
2s        2s      1   {kubelet worker0}   spec.containers{liveness}   Warning     Unhealthy   Liveness probe failed: cat: can't open '/tmp/healthy': No such file or directory