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 

重新应用之后 测试访问的还是继续访问的 0.9.2 需要手动切换，还会访问到新的版本，点击 Promote 切换

也可以回滚

版本又变成了0.9.2

在Blue-Green部署上使用analysis

root@k8s-master:~/tekton-and-argocd-in-practise/08-argo-rollouts# kubectl apply -f 06-argo-rollouts-bluegreen-with-analysis.yaml
root@k8s-master:~/tekton-and-argocd-in-practise/08-argo-rollouts# cat 06-argocd-applicatio-and-argo-rollouts.yaml 
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: spring-boot-helloworld
  namespace: argocd
spec:
  project: default
  source:
    repoURL: https://gitee.com/zyyangct/spring-boot-helloworld-deployment.git 
    targetRevision: HEAD
    path: rollouts/helloworld-bluegreen-with-analysis
  destination:
    server: https://kubernetes.default.svc
    namespace: default
  syncPolicy:
    automated: 
      prune: true
      selfHeal: true
      allowEmpty: false
    syncOptions:
    - Validate=false
    - CreateNamespace=true
    - PrunePropagationPolicy=foreground
    - PruneLast=true
    - ApplyOutOfSyncOnly=true
    retry:
      limit: 5
      backoff:
        duration: 5s
        factor: 2
        maxDuration: 3m
  ignoreDifferences:
  - group: networking.istio.io
    kind: VirtualService
    jsonPointers:
    - /spec/http/0

登录 argocd 的页面查看 applications

可以看到已经部署成功了

我把 gitee 上的镜像修改为 0.9.4 模仿上传修改代码

argocd 已经在自动部署了

可以看到 argo-rollouts 更新到了 0.9.4