Kubernates之Deployment滚动升级和回滚

克虏伯

发布于 2020-08-02 17:47:08

7210

发布于 2020-08-02 17:47:08

查看Deployment的升级历史

List-1

xx@xx:~/xx$ kubectl rollout history deployment xxxx -n xxx
deployment.extensions/xxx 
REVISION  CHANGE-CAUSE
6         <none>
7         <none>
8         <none>

从上面的结果可以看出在执行Deployment升级的时候最好带上record参数，便于查看历史版本信息

查看单个revison的信息

List-2

xx@xx:~/xx$ kubectl rollout history deployment xxxx --revision=8  -n xxx
deployment.extensions/xxx with revision #8
Pod Template:
  Labels:	app=xx
	pod-template-hash=65d95b7bd7
  Annotations:	cattle.io/timestamp: 2020-07-30T03:31:16Z
	field.cattle.io/ports: [[{"containerPort":8180,"dnsName":"xx-","name":"port","protocol":"TCP","sourcePort":0}]]
  Containers:
   unstruct:
    Image:	xxxxx/apps/jdk8:5
    Port:	8180/TCP
    Host Port:	0/TCP
    Command:
      /bin/bash
      /tmp/config/start.sh
      -d
    Environment:
      .......略
    Mounts:
      /tmp/config from config (rw)
  Volumes:
   config:
    Type:	ConfigMap (a volume populated by a ConfigMap)
    Name:	cm-xxxx
    Optional:	false

回滚之前的rs信息

List-3

xxx@xxx:~/xxx$ kubectl get rs -n xxx
NAME                  DESIRED   CURRENT   READY   AGE
xx-54dffb5d47     1         1         1       39h
xx-58bc66466      0         0         0       7d13h
xx-66dd79b8bb     0         0         0       7d22h
xxx-65d95b7bd7   1         1         1       22h
xxx-68c5bb8cb    0         0         0       23h
xxx-787c4c9c59   0         0         0       39h

回滚之前rs的版本是xxx-65d95b7bd7

回滚到版本7

我们指定版本进行回滚，如果没有指定revision，那么是回滚到上一个版本

List-4

xx@xxx:~/xxx$ kubectl rollout undo deployment xxx --to-revision=7  -n xxx
deployment.extensions/xxx rolled back

查看rs信息

List-5

xx@xx:~/xxx$ kubectl get rs -n xxx
NAME                  DESIRED   CURRENT   READY   AGE
xx-54dffb5d47     1         1         1       39h
xx-58bc66466      0         0         0       7d13h
xx-66dd79b8bb     0         0         0       7d22h
xxx-65d95b7bd7   0         0         0       22h
xxx-68c5bb8cb    1         1         1       23h
xxx-787c4c9c59   0         0         0       39h

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deployment