Docker Kubernetes 容器更新与回滚
环境：
- 系统：Centos 7.4 x64
- Docker版本：18.09.0
- Kubernetes版本：v1.8
- 管理节点：192.168.1.79
- 工作节点：192.168.1.78
- 工作节点：192.168.1.77
创建环境：
- 1、Deployment名称：nginx-deployment
- 2、pods副本数为：3
- 3、image镜像：nginx1.9
更新升级
方案一：管理节点：滚动升级镜像。
kubectl set image deployment nginx-deployment nginx=nginx:1.11
kubectl set image 资源类型/资源名称 容器名称=镜像版本
方案二：管理节点：修改原yaml配置文件重新加载完成滚动升级
kubectl apply -f nginx-deployment.yaml
管理节点：查看升级情况
命令：kubectl describe deployment nginx-deployment# 镜像已更新 ???Image: ???????nginx:1.11 ?Type ???Reason ????????????Age ??From ??????????????????Message ?---- ???------ ????????????---- ?---- ??????????????????-------# 扩容版本 ?Normal ?ScalingReplicaSet ?24m ??deployment-controller ?Scaled up replica set nginx-deployment-845cfc7fb9 to 3 ?Normal ?ScalingReplicaSet ?49s ??deployment-controller ?Scaled up replica set nginx-deployment-7ff5df4cfb to 1# 缩容版本 ?Normal ?ScalingReplicaSet ?34s ??deployment-controller ?Scaled down replica set nginx-deployment-845cfc7fb9 to 2# 扩容版本 ?Normal ?ScalingReplicaSet ?34s ??deployment-controller ?Scaled up replica set nginx-deployment-7ff5df4cfb to 2# 缩容版本 ?Normal ?ScalingReplicaSet ?18s ??deployment-controller ?Scaled down replica set nginx-deployment-845cfc7fb9 to 1# 扩容版本 ?Normal ?ScalingReplicaSet ?18s ??deployment-controller ?Scaled up replica set nginx-deployment-7ff5df4cfb to 3# 缩容版本 ?Normal ?ScalingReplicaSet ?15s ??deployment-controller ?Scaled down replica set nginx-deployment-845cfc7fb9 to 0
命令：kubectl rollout status deployment/nginx-deploymentWaiting for rollout to finish: 1 out of 3 new replicas have been updated...Waiting for rollout to finish: 1 out of 3 new replicas have been updated...Waiting for rollout to finish: 1 out of 3 new replicas have been updated...Waiting for rollout to finish: 2 out of 3 new replicas have been updated...Waiting for rollout to finish: 2 out of 3 new replicas have been updated...Waiting for rollout to finish: 2 out of 3 new replicas have been updated...Waiting for rollout to finish: 1 old replicas are pending termination...Waiting for rollout to finish: 1 old replicas are pending termination...deployment "nginx-deployment" successfully rolled out
命令：kubectl rollout history deployment/nginx-deploymentdeployments "nginx-deployment"REVISION ?CHANGE-CAUSE1 ????????<none>2 ????????<none>
命令：kubectl rollout history deployment/nginx-deployment --revision=1deployments "nginx-deployment" with revision #1Pod Template: ?Labels: ???app=nginx ???pod-template-hash=4017973965 ?Containers: ??nginx: ???Image: ???nginx:1.10 ???Port: ???80/TCP ???Environment: ???<none> ???Mounts: ???<none> ?Volumes: ???<none>
版本回滚
管理节点：回滚到上一个版本
kubectl rollout undo deployment nginx-deployment
kubectl rollout undo 资源类型 资源名称
管理节点：指定版本回滚
kubectl rollout undo deployment/nginx-deployment --to-revision=3
kubectl rollout undo 资源类型 资源名称 --to-revision=版本号注：kubectl rollout history 资源类型 资源名称 查看的版本号。
管理节点：查看回滚情况
命令：kubectl rollout history deployment/nginx-deploymentdeployments "nginx-deployment"REVISION ?CHANGE-CAUSE1 ????????<none>2 ????????<none>4 ????????<none>5 ????????<none>注：将还原版本覆盖，并生成新的版本号。
Docker Kubernetes 容器更新与回滚
原文地址：https://www.cnblogs.com/xiangsikai/p/10011412.html