rollout更新策略bluegreen

部署一个示例

[root@master 08-argo-rollouts]# kubectl apply -f 05-argo-rollouts-bluegreen-demo.yaml 
rollout.argoproj.io/rollout-helloworld-bluegreen configured
service/spring-boot-helloworld unchanged
service/spring-boot-helloworld-preview unchanged
[root@master 08-argo-rollouts]# cat 05-argo-rollouts-bluegreen-demo.yaml 
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: rollout-helloworld-bluegreen
spec:
  replicas: 3
  revisionHistoryLimit: 5
  selector:
    matchLabels:
      app: rollout-helloworld-bluegreen
  template:
    metadata:
      labels:
        app: rollout-helloworld-bluegreen
    spec:
      containers:
      - name: spring-boot-helloworld
        image: ikubernetes/spring-boot-helloworld:v0.9.2
        ports:
        - containerPort: 80
  strategy:
    blueGreen: 
      activeService: spring-boot-helloworld
      previewService: spring-boot-helloworld-preview
      autoPromotionEnabled: false
---
kind: Service
apiVersion: v1
metadata:
  name: spring-boot-helloworld
spec:
  selector:
    app: rollout-helloworld-bluegreen
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80

---
kind: Service
apiVersion: v1
metadata:
  name: spring-boot-helloworld-preview
spec:
  selector:
    app: rollout-helloworld-bluegreen
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80

更新一下镜像版本

[root@master 08-argo-rollouts]# vim 05-argo-rollouts-bluegreen-demo.yaml 
    spec:
      containers:
      - name: spring-boot-helloworld
        image: ikubernetes/spring-boot-helloworld:v0.9.3
        ports:
        - containerPort: 80
        
[root@master 08-argo-rollouts]# kubectl apply -f 05-argo-rollouts-bluegreen-demo.yaml 

也可以回滚

版本又变成了0.9.2