ArgoCD + kustomize 적용하기 (+ argocd-image-updater)

Template 형식으로 간단하게 작성

1. argocd install

• getting started

2. argocd-image-updater install

• getting started

3. application 및 kustomize 등록

[repo - argocd-applications structure]

• applications
  • projectName
    • dev (digest)
      • backend.yaml

        apiVersion: argoproj.io/v1alpha1
        kind: Application
        metadata:
        name: backend-dev
        namespace: default
        annotations:
          argocd-image-updater.argoproj.io/image-list: backend-dev=XXX.dkr.ecr.ap-northeast-2.amazonaws.com/backend:dev
          argocd-image-updater.argoproj.io/backend-dev.update-strategy: digest
          argocd-image-updater.argoproj.io/backend-dev.pull-secret: ext:/app/config/ecr.sh
        spec:
        project: devops
        destination:
          name: dev-cluster
          namespace: default
        source:
          path: application/projectName/backend/overlays/dev
          repoURL: git@github.com:TEAM/k8s-manifest.git
          targetRevision: dev
        syncPolicy:
          syncOptions:     # Sync options which modifies sync behavior
          - Validate=false # disables resource validation (equivalent to 'kubectl apply --validate=false') ( true by default ).
          - CreateNamespace=true # Namespace Auto-Creation ensures that namespace specified as the application destination exists in the destination cluster.
          - PrunePropagationPolicy=foreground # Supported policies are background, foreground and orphan.
          - PruneLast=true # Allow the ability for resource pruning to happen as a final, implicit wave of a sync operation
          - ApplyOutOfSyncOnly=true
          - RespectIgnoreDifferences=true
          - Replace=true
          # The retry feature is available since v1.7
          retry:
            limit: 1 # number of failed sync attempt retries; unlimited number of attempts if less than 0
            backoff:
              duration: 5s # the amount to back off. Default unit is seconds, but could also be a duration (e.g. "2m", "1h")
              factor: 2 # a factor to multiply the base duration after each failed retry
              maxDuration: 3m # the maximum amount of time allowed for the backoff strategy

      • frontend.yaml
    • staging (latest)
    • prod (latest or semver)

[repo - k8s-kustomize structure]

• applications

  • projectName

    • backend

      • base

        • deployment.yaml

        • service.yaml

        • kustomization.yaml

          apiVersion: kustomize.config.k8s.io/v1beta1
          kind: Kustomization
          
          resources:
          - deployment.yaml
          - service.yaml

      • overlays

        • dev

          • kustomization.yaml

             apiVersion: kustomize.config.k8s.io/v1beta1
             kind: Kustomization
            
             resources:
             - ../../base
            
             namespace: dev
             images:
             - name: XXX.dkr.ecr.ap-northeast-2.amazonaws.com/backend
               newTag: 0.0.2

        • staging

        • prod