K8s 日常操作

1、获取所有Pods

kubectl get pods --namespace=default

2、获取所有Deployments

kubectl get deployments --namespace=default

3、获取所有Services

kubectl get services --namespace=default

4、查看POD日志

kubectl describe pod <pod-name> --namespace=defualt

5、让master也运行pod（默认master不运行pod）

kubectl taint nodes --all node-role.kubernetes.io/master-

6、动态扩容deployment

kubectl scale deployment nginx-deployment --replicas 10

7、更新image

kubectl set image deployment/nginx-deployment nginx=nginx:1.9.1

8、获取ETCD、Scheduler、Controller-Manager组件状态 

[root@node01 ~]# kubectl get componentstatus
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok                   
controller-manager   Healthy   ok                   
etcd-0               Healthy   {"health": "true"}   
etcd-1               Healthy   {"health": "true"}   
etcd-2               Healthy   {"health": "true"}   

9、查看网络link详细属性

ip -d link show

10、进入POD内部

kubectl exec -it redis-master-6b556f4c5f-7rddd /bin/sh