k8s——排错指南

一般的k8s排错步骤：查看node状态→查看pod状态→查看kubelet系统日志

一、常用命令：

1、查看各节点状态：kubectl get node

2、查看node事件：kubectl describe node

3、查看Pod状态：kubectl get pod -o wide

4、查看Pod事件：kubectl describe pod

5、查看Pod日志文件：kubectl logs -f

6、进入pod内部：kubectl exec -it /bin/bash

7、查看系统Kubelet 日志: journalctl -l -u kubelet -n 1000

8、查询副本编辑器：kubectl get rc

9、修改rc环境变量： kubectl edit pod | grep

二、常见错误：

1、The connection to the server localhost:8080 was refused - did you specify the right host or port?

 1. echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bash_profile
 2. source ~/.bash_profile

2、#failed to read pod IP from plugin/docker: NetworkPlugin cni failed on the status hook for pod “nginx-ingress-controller-7bff4d7c6-n7g62_default”: CNI failed to retrieve network namespace path: cannot find network namespace for the terminated container

重启docker服务

systemctl restart docker

k8s pod排除指南