k8s常用的一些简单命令

Posted 2021-06-13 会飞的鹅

• kubectl命令导出yaml文件

kubectl get deploy nginx -o=yaml  > 1.yaml

• kubectl生成yaml文件

kubectl create deployment web --image=nginx -o yaml --dry-run >> nginx-rc.yaml

• 查看pod状态

kubectl get pod --all-namespaces

• 查看具体某个pod状态

kubectl describe pod <Pod Name>

• 查看所有namespaces

kubectl get namespaces

• 查看nodes状态

kubectl get nodes

• 创建pod

kubectl create deployment web --image=nginx

kubectl scale deployment web --replicas=5

• 列出pod详细信息

kubectl get pods -o wide

kubectl describe pods / kubectl describe pod [NAME]

• 正确删除pod

kubectl delete deployment [name]

例：kubectl delete deployment nginx

• 删除service

kubectl get svc

kubectl delete svc nginx2 / kubectl delete servcie nginx2

• 查看rc（Replication Controller）

kubectl get rc

• 删除rc

kubectl delete rc mysql

• 进入容器内部

kubectl exec -it <podName> -c <containerName> -n <namespace> -- shell comand

• 查看集群健康状态

kubectl get cs

• 重启kubectl

systemctl daemon-reload

systemctl restart kubelet

• 查看集群信息

kubectl cluster-info

• 查看各组件信息

kubectl get componentstatuses

• 查看日志

journalctl -u kubelet -f