1. 歷史記錄和回滾
- 寫(xiě)一個(gè)示例
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx-test
namespace: test
spec:
replicas: 1
template:
metadata:
labels:
app: nginx-test
spec:
containers:
- name: nginx-test
image: "harbocto.XXX.com.cn/public/nginx"
ports:
- containerPort: 80
創(chuàng)建deployment探膊，等pod啟動(dòng)后望抽，修改成錯(cuò)誤的鏡像芥备，然后applay一下稳懒，pod處于錯(cuò)誤狀態(tài)：
[root@DoM01 deployment]# kubectl get pod -n test
NAME READY STATUS RESTARTS AGE
nginx-test-c5c7fccb6-vtbz4 0/1 ErrImagePull 0 1h
然后進(jìn)行測(cè)試如下：
1.1 歷史記錄
- 查看歷史版本
[root@DoM01 ~]# kubectl rollout -n test history deployment nginx-test
deployment.extensions/nginx-test
REVISION CHANGE-CAUSE
1 <none>
2 <none>
- 某一版本詳細(xì)信息
[root@DoM01 deployment]# kubectl rollout -n test history deployment nginx-test --revision=1
deployment.extensions/nginx-test with revision #1
Pod Template:
Labels: app=nginx-test
pod-template-hash=5f9454646c
Containers:
nginx-test:
Image: harbocto.XXX.com.cn/public/nginx
Port: 80/TCP
Host Port: 0/TCP
Environment: <none>
Mounts: <none>
Volumes: <none>
1.2 撤銷本次發(fā)布（即回滾到上一版）
- 回滾到上一版
[root@DoM01 deployment]# kubectl rollout undo -n test deployment/nginx-test
deployment.extensions/nginx-test rolled back
- 查看可知夯接，pod啟動(dòng)起來(lái)了焕济。（如果用edit可以看到鏡像已經(jīng)是第一版的正確鏡像了。）
[root@DoM01 deployment]# kubectl get pod -n test
NAME READY STATUS RESTARTS AGE
nginx-test-5f9454646c-v6w74 1/1 Running 0 9s
- 此時(shí)查看歷史版本盔几，可見(jiàn)剛才的 1版 變成了 3版
[root@DoM01 deployment]# kubectl rollout history -n test deployment nginx-test
deployment.extensions/nginx-test
REVISION CHANGE-CAUSE
2 <none>
3 <none>
1.3 回滾到指定版本
添加 --to-revision=1 參數(shù)即可
[root@DoM01 deployment]# kubectl rollout -n test history deployment/nginx-test --to-revision=2
deployment/nginx-test 和 deployment nginx-test 這里是一樣的晴弃，只是寫(xiě)法不同。
2. 暫停/恢復(fù)
2.1 暫停測(cè)試
- 命令
kubectl rollout pause xxxx
[root@DoM01 deployment]# kubectl rollout pause -n test deployment nginx-test
deployment.extensions/nginx-test paused
- 查看逊拍，如下可見(jiàn)上鞠，似乎deployment和pod都沒(méi)有任何變化
[root@DoM01 deployment]# kubectl get deployments -n test
NAME READY UP-TO-DATE AVAILABLE AGE
nginx-test 1/1 1 1 7d23h
[root@DoM01 deployment]# kubectl get pod -n test
NAME READY STATUS RESTARTS AGE
nginx-test-5f9454646c-v6w74 1/1 Running 0 13m
- 修改成錯(cuò)誤的鏡像
[root@DoM01 deployment]# kubectl set image -n test deployment nginx-test nginx-test=nginx:1.15
deployment.extensions/nginx-test image updated
- 查看可見(jiàn)，仍有一個(gè)pod在正常運(yùn)行芯丧。雖然鏡像已經(jīng)是剛才更改的了芍阎，但是UP-TO-DATE 卻是0。
[root@DoM01 deployment]# kubectl get deployments -n test -o wide
NAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR
nginx-test 1/1 0 1 7d23h nginx-test nginx:1.15 app=nginx-test
- 查看歷史版本
可見(jiàn)缨恒，并沒(méi)有新的版本產(chǎn)生
[root@DoM01 deployment]# kubectl rollout -n test history deployment nginx-test
deployment.extensions/nginx-test
REVISION CHANGE-CAUSE
2 <none>
3 <none>
2.2 恢復(fù)
- 命令
kubectl rollout resume deploy deployment_name
[root@DoM01 deployment]# kubectl rollout resume deploy -n test nginx-test
deployment.extensions/nginx-test resumed
- 查看歷史版本,多了一個(gè)4
[root@DoM01 deployment]# kubectl rollout history -n test deployment nginx-test
deployment.extensions/nginx-test
REVISION CHANGE-CAUSE
2 <none>
3 <none>
4 <none>
3. 小結(jié)
- 查看歷史版本
kubectl rollout history deployment Deployment_Name
- 查看某版本詳細(xì)信息
kubectl rollout history deployment Deployment_Name --revision=N
添加 ** --revision=N** 參數(shù)谴咸，N是版本號(hào)
- 回滾到上一版
kubectl rollout undo -n test deployment Deployment_Name
- 回滾到制定版本
kubectl rollout undo -n test deployment Deployment_Name --to-revision=N
添加 --to-revision=N 參數(shù)，N是版本號(hào)
- 暫停
kubectl rollout pause deployment Deployment_Name
- 恢復(fù)
kubectl rollout resume deploy Deployment_Name
