管理应用程序生命周期 master执行

1.创建
kubectl run nginx --replicas=3 --image=nginx:1.14 --port=80
kubectl get deploy,pods
2.发布(暴露)
kubectl expose deployment nginx --port=80 --type=NodePort --target-port=80 --name=nginx-service
kubectl get service
[root@instance-fq0043cl-3 ~]# kubectl get service
NAME            TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
kubernetes      ClusterIP   10.96.0.1        <none>        443/TCP        112d
nginx           NodePort    10.110.204.160   <none>        80:30179/TCP   110d
nginx-cmdb      NodePort    10.110.204.170   <none>        81:30180/TCP   109d
nginx-service   NodePort    10.110.91.64     <none>        80:32003/TCP   3s
#浏览器访问任意node的公网ip+32003,即可访问刚才创建nginx
3.更新
kubectl set image deployment/nginx nginx=nginx:1.15
#查看镜像的信息是否是1.14
[root@instance-fq0043cl-3 ~]# kubectl describe pod nginx-w-997f65bb9-5sxcz
[root@instance-fq0043cl-3 ~]# kubectl set image deployment/nginx nginx=nginx:1.15
deployment.extensions/nginx image updated
#k8s不会立即所有的立刻更新,会一个个容器的更新.
4.回滚
#查看所有的历史更新
kubectl rollout history deployment/nginx
#undo直接回滚上一个版本
kubectl rollout undo deployment/nginx
5.删除
kubectl delete deploy/nginx
kubectl delete svc/nginx-service