[k8s project] CI/CD Pipeline 구현 - ArgoCD를 사용한 CD 구축

2022-06-02 277 words 2 minutes

Contents

CD

Continuous Deployment
변경 사항을 자동으로 배포/릴리스 참고자료

ArgoCD를 사용하여 k8s cluster 배포 자동화

kustomization 파일을 통해 쿠버네티스 오브젝트를 사용자가 원하는 대로 변경하는(customize) 독립형 도구

설치

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curl -s "https://raw.githubusercontent.com/\
kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"  | bash
sudo mv kustomize /usr/local/bin
kustomize version

사용법

파일 구성

/base

/base/back-test-deployment.yaml

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-server
spec:
  replicas: 3
  selector:
    matchLabels:
      app: api-server
  template:
    metadata:
      name: api-server-pod
      labels:
        app: api-server
    spec:
      containers:
      - name: api-server
        image: api-server-image
        ports:
        - containerPort: 8080

/base/kustomization.yaml

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

/overlay

/overlay/kustomization.yaml

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-server
spec:
  containers:
  - name: api-server-image

/overlay/back-test-deployment-patch.yaml

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apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
patchesStrategicMerge:
- back-test-deployment-patch.yaml
resources:
- ../../base
images:
- name: api-server-image
  newName: plox/modoosugang_server
  newTag: "7"

kustomize시 base와 overlay/dev 내용이 merge되면서 manifest파일이 생성됨

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$ kustomize build overlay/dev

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: api-server
    spec:
      containers:
      - name: api-server-image
      minReadySeconds: 5
      replicas: 2
      selector:
        matchLabels:
          app: api-server
      template:
        metadata:
          labels:
            app: api-server
          name: api-server-pod
        spec:
          containers:
            image: **plox/modoosugang_server:7   # < - ./overlay/dev/kustomization.yaml 파일 내용 merge**
            name: api-server
            ports:
            - containerPort: 8080
    ```

Kustomize에 대한 자세한 설명은 [이곳](https://velog.io/@pullee/Kustomize%EB%A1%9C-K8S-%EB%A6%AC%EC%86%8C%EC%8A%A4-%EA%B4%80%EB%A6%AC%ED%95%98%EA%B8%B0)에 자세히 설명한 글이 있어 참고하였음.