kubernetes deployment升级和回滚

1.创建deployment pod

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

准备svc文件

apiVersion: v1
kind: Service
metadata:
  name: nginxsvc
spec:
  type: NodePort
  ports:
    - port:
      nodePort:
  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                                            14m

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        /TCP        1d        <none>
svc/nginxsvc     10.254.198.39   <nodes>       :/TCP   9m        run=mynginx

NAME                    DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)               SELECTOR
rs/mynginx-                              14m       mynginx        docker.io/nginx:1.13   pod-template-hash=,run=mynginx

NAME                          READY     STATUS    RESTARTS   AGE       IP            NODE
po/mynginx--0q0cg   /       Running             4m        172.16.43.4   192.168.29.203
po/mynginx--7g99g   /       Running             4m        172.16.22.3   192.168.29.202
po/mynginx--bzjn2   /       Running             4m        172.16.43.3   192.168.29.203
po/mynginx--g9dd1   /       Running             4m        172.16.22.4   192.168.29.202

2.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                                            35m

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        /TCP        1d        <none>
svc/nginxsvc     10.254.198.39   <nodes>       :/TCP   30m       run=mynginx

NAME                    DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)               SELECTOR
rs/mynginx-                              35m       mynginx        docker.io/nginx:1.13   pod-template-hash=,run=mynginx
rs/mynginx-                              2m        mynginx        docker.io/nginx:1.15   pod-template-hash=,run=mynginx

NAME                          READY     STATUS    RESTARTS   AGE       IP            NODE
po/mynginx--7h3hc   /       Running             2m        172.16.43.5   192.168.29.203
po/mynginx--cp080   /       Running             2m        172.16.22.2   192.168.29.202
po/mynginx--k6kkb   /       Running             2m        172.16.43.4   192.168.29.203
po/mynginx--xg6cr   /       Running             2m        172.16.43.3   192.168.29.203

3.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
        kubectl run mynginx --image=docker.io/nginx:1.13 --replicas= --record
        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=
deployment "mynginx" rolled back
[root@master01 ~]# kubectl get all -o wide
NAME             DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/mynginx                                            39m

NAME             CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE       SELECTOR
svc/kubernetes   10.254.0.1      <none>        /TCP        1d        <none>
svc/nginxsvc     10.254.198.39   <nodes>       :/TCP   35m       run=mynginx

NAME                    DESIRED   CURRENT   READY     AGE       CONTAINER(S)   IMAGE(S)               SELECTOR
rs/mynginx-                              39m       mynginx        docker.io/nginx:1.13   pod-template-hash=,run=mynginx
rs/mynginx-                              6m        mynginx        docker.io/nginx:1.15   pod-template-hash=,run=mynginx

NAME                          READY     STATUS    RESTARTS   AGE       IP            NODE
po/mynginx--4z1f5   /       Running             51s       172.16.43.3   192.168.29.203
po/mynginx--f1qzz   /       Running             52s       172.16.22.4   192.168.29.202
po/mynginx--ks19b   /       Running             52s       172.16.22.3   192.168.29.202
po/mynginx--xqxj6   /       Running             50s       172.16.43.6   192.168.29.203

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