argocd-rollouts bluegreen demo with sync-wave on a secondary deployment, to control a staged rollout

argocd-application.yml

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: bluegreen-demo
  namespace: argocd
spec:
  project: default
  source:
    repoURL: <your repo>
    targetRevision: main
    path: <path to your manifests>
  destination:
    server: https://kubernetes.default.svc
    namespace: default

bluegreen-rollout.yml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: bluegreen
spec:
  replicas: 0 # controlled by Rollout
  revisionHistoryLimit: 1
  selector:
    matchLabels:
      app: bluegreen
  template:
    metadata:
      labels:
        app: bluegreen
        sidecar.istio.io/inject: "true"
    spec:
      containers:
      - image: argoproj/rollouts-demo:blue
        name: demo
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        resources:
          requests:
            cpu: 5m
            memory: 32Mi
          limits:
            cpu: 50m
            memory: 100Mi
        lifecycle:
          preStop:
            # pause to allow k8s apis to remove the pod from Service Endpoints
            exec:
              command:
                - /usr/bin/sh
                - -c
                - sleep 15s
      terminationGracePeriodSeconds: 30

---
apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: bluegreen
spec:
  workloadRef:
    apiVersion: apps/v1
    kind: Deployment
    name: bluegreen

  ## Argo Rollouts config ##
  strategy:
    blueGreen:
      activeService: bluegreen-active
      previewService: bluegreen-preview
      previewReplicaCount: 1
      autoPromotionEnabled: false
      

bluegreen-worker-deployment.yml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: bluegreen-worker
  annotations:
    argocd.argoproj.io/sync-wave: "10"
spec:
  replicas: 1
  revisionHistoryLimit: 1
  selector:
    matchLabels:
      app: bluegreen-worker
  template:
    metadata:
      labels:
        app: bluegreen-worker
        sidecar.istio.io/inject: "true"
    spec:
      containers:
      - image: argoproj/rollouts-demo:yellow
        imagePullPolicy: Always
        name: demo
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        resources:
          requests:
            cpu: 5m
            memory: 32Mi
          limits:
            cpu: 50m
            memory: 100Mi
        lifecycle:
          preStop:
            # pause to allow k8s apis to remove the pod from Service Endpoints
            exec:
              command:
                - /usr/bin/sh
                - -c
                - sleep 15s
      terminationGracePeriodSeconds: 30

kustomization.yml

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization

namespace: default

resources:
- deployment.yml
- deployment-worker.yml
- service.yml

service.yml

apiVersion: v1
kind: Service
metadata:
  name: bluegreen
spec:
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: http
  selector:
    app: bluegreen

---
apiVersion: v1
kind: Service
metadata:
  name: bluegreen-active
spec:
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: http
  selector:
    app: bluegreen

---
apiVersion: v1
kind: Service
metadata:
  name: bluegreen-preview
spec:
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: http
  selector:
    app: bluegreen