K8s 水平扩展

Deployment 关系

Deployment 通过“控制器模式”，来操作 ReplicaSet 的个数和属性，进 而实现“水平扩展 / 收缩”和“滚动更新”这两个编排动作。

增加节点

kubectl scale deployment nginx-deployment --replicas=4

查看扩展状态

kubectl rollout status deployment/nginx-deployment

修改配置

kubectl edit deployment/nginx-deployment

回滚

kubectl rollout undo deployment/nginx-deployment

变更历史

kubectl apply -f nginx-deployment2.yaml --record kubectl rollout history deployment/nginx-deployment

查看版本变更

kubectl rollout history deployment/nginx-deployment --revision=2

回滚指定版本

kubectl rollout undo deployment/nginx-deployment --to-revision=2

暂停滚动更新

kubectl rollout pause deployment/nginx-deployment

恢复滚动更新

kubectl rollout resume deployment/nginx-deployment