kubernetes deployment升级和回滚

来源：cnblogs　　作者：omgasw　　时间：2019/3/21 8:38:27　　对本文有异议

a.创建deployment pod

kubectl run mynginx --image=docker.io/nginx:1.13 --replicas=4 --record

准备svc文件

apiVersion: v1
kind: Service
metadata:
  name: nginxsvc
spec:
  type: NodePort
  ports:
    - port: 80
      nodePort: 30080
  selector:
    run: mynginx    #修改为需要关联pod的lable参数，'kubectl describe deploy/mynginx'查看

创建nginx-svc

kubectl create -f nginx-svc.yaml

[root@master01 ~]# kubectl get all -o wide
NAME             DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/mynginx   4         4         4            4           14m
NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginxsvc     10.254.198.39   <nodes>       80:30080/TCP   9m        run=mynginx
NAME                    DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)               SELECTOR
rs/mynginx-1186046214   4         4         4         14m       mynginx        docker.io/nginx:1.13   pod-template-hash=1186046214,run=mynginx
NAME                          READY     STATUS    RESTARTS   AGE       IP            NODE
po/mynginx-1186046214-0q0cg   1/1       Running   0          4m        172.16.43.4   192.168.29.203
po/mynginx-1186046214-7g99g   1/1       Running   0          4m        172.16.22.3   192.168.29.202
po/mynginx-1186046214-bzjn2   1/1       Running   0          4m        172.16.43.3   192.168.29.203
po/mynginx-1186046214-g9dd1   1/1       Running   0          4m        172.16.22.4   192.168.29.202

b.升级mynginx，nginx:1.13 > nginx:1.15

kubectl set image deploy/mynginx mynginx=docker.io/nginx:1.15　　#升级

[root@master01 ~]# kubectl get all -o wide
NAME             DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/mynginx   4         4         4            4           35m
NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginxsvc     10.254.198.39   <nodes>       80:30080/TCP   30m       run=mynginx
NAME                    DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)               SELECTOR
rs/mynginx-1186046214   0         0         0         35m       mynginx        docker.io/nginx:1.13   pod-template-hash=1186046214,run=mynginx
rs/mynginx-1335861512   4         4         4         2m        mynginx        docker.io/nginx:1.15   pod-template-hash=1335861512,run=mynginx
NAME                          READY     STATUS    RESTARTS   AGE       IP            NODE
po/mynginx-1335861512-7h3hc   1/1       Running   0          2m        172.16.43.5   192.168.29.203
po/mynginx-1335861512-cp080   1/1       Running   0          2m        172.16.22.2   192.168.29.202
po/mynginx-1335861512-k6kkb   1/1       Running   0          2m        172.16.43.4   192.168.29.203
po/mynginx-1335861512-xg6cr   1/1       Running   0          2m        172.16.43.3   192.168.29.203

c.回滚升级

kubectl rollout history deploy/mynginx　　#查看操作历史

[root@master01 ~]# kubectl rollout history deploy/mynginx
deployments "mynginx"
REVISION    CHANGE-CAUSE
1        kubectl run mynginx --image=docker.io/nginx:1.13 --replicas=4 --record
2        kubectl set image deploy/mynginx mynginx=docker.io/nginx:1.15

kubectl rollout undo deploy/mynginx --to-revision=1　　#回滚

[root@master01 ~]# kubectl rollout undo deploy/mynginx --to-revision=1
deployment "mynginx" rolled back
[root@master01 ~]# kubectl get all -o wide
NAME             DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/mynginx   4         4         4            4           39m
NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        443/TCP        1d        <none>
svc/nginxsvc     10.254.198.39   <nodes>       80:30080/TCP   35m       run=mynginx
NAME                    DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)               SELECTOR
rs/mynginx-1186046214   4         4         4         39m       mynginx        docker.io/nginx:1.13   pod-template-hash=1186046214,run=mynginx
rs/mynginx-1335861512   0         0         0         6m        mynginx        docker.io/nginx:1.15   pod-template-hash=1335861512,run=mynginx
NAME                          READY     STATUS    RESTARTS   AGE       IP            NODE
po/mynginx-1186046214-4z1f5   1/1       Running   0          51s       172.16.43.3   192.168.29.203
po/mynginx-1186046214-f1qzz   1/1       Running   0          52s       172.16.22.4   192.168.29.202
po/mynginx-1186046214-ks19b   1/1       Running   0          52s       172.16.22.3   192.168.29.202
po/mynginx-1186046214-xqxj6   1/1       Running   0          50s       172.16.43.6   192.168.29.203

[root@master01 ~]# kubectl rollout history deploy/mynginx
deployments "mynginx"
REVISION    CHANGE-CAUSE
2        kubectl set image deploy/mynginx mynginx=docker.io/nginx:1.15
3        kubectl run mynginx --image=docker.io/nginx:1.13 --replicas=4 --record