> For the complete documentation index, see [llms.txt](https://doc.cncf.vip/kubernetes-handbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.cncf.vip/kubernetes-handbook/fu-lu/debug-kubernetes-services.md).

# Kubernetes 中的应用故障排查

* 查看某个资源的定义和用法

```bash
kubectl explain
```

* 查看Pod的状态

```bash
kubectl get pods
kubectl describe pods my-pod
```

* 监控Pod状态的变化

```bash
kubectl get pod -w
```

可以看到一个 namespace 中所有的 pod 的 phase 变化，请参考 [Pod 的生命周期](/kubernetes-handbook/gai-nian-yu-yuan-li/pod-state-and-lifecycle/pod-lifecycle.md)。

* 查看 Pod 的日志

```bash
kubectl logs my-pod
kubectl logs my-pod -c my-container
kubectl logs -f my-pod
kubectl logs -f my-pod -c my-container
```

`-f` 参数可以 follow 日志输出。

* 交互式 debug

```bash
kubectl exec my-pod -it /bin/bash
kubectl top pod POD_NAME --containers
```


---

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