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  1. github repository 생성
git glone <레포지토리 주소>
git cd <레포지토리명>
## 만약 브랜치 변경하려면 -> git checkout -b <생성할 브랜치 이름>
  1. spring 파일을 레포지토리에 복제 및 push
git init
git add .
git commit -m "<커밋 메시지>"

git commit -m "Initi
al Commit Github Actions for GKE"
[main 9d50968] Initial Commit Github Actions for GKE
 58 files changed, 779 insertions(+)
 create mode 100644 HELP.md
 create mode 100644 build.gradle
 create mode 100644 build/classes/java/main/jpa/study/SpringConfig.class
 create mode 100644 build/classes/java/main/jpa/study/StudyApplication.class
 create mode 100644 build/classes/java/main/jpa/study/project1/ApiController.class
 create mode 100644 build/classes/java/main/jpa/study/project1/JpaMemberRepository.class
 create mode 100644 build/classes/java/main/jpa/study/project1/Member.class
 create mode 100644 build/classes/java/main/jpa/study/project1/MemberRepository.class
 create mode 100644 build/classes/java/main/jpa/study/project1/MemberService.class
 create mode 100644 build/classes/java/main/jpa/study/project1/MemberServiceImpl.class
 create mode 100644 build/jib-cache/jib-classpath-file
 create mode 100644 build/jib-cache/jib-main-class-file
 create mode 100644 build/jib-cache/layers/3519da444b957db95137651ea6b81c5c17eb8fa12741e28bcd79a2b30edefca0/80b14830e8e3657bf518780c48e9de6d7560869afac5212dee4367e9e4dbe7f0
 create mode 100644 build/jib-cache/layers/46dcf7b31ae6b7e33dc3292b93c01d64a750fbd234e2598201ff5fa3ff874160/e2f3ee2ed9901ad3e884a3dfe6d8a936ab23918ec454a826fc0fde7f7d7efddd
 create mode 100644 build/jib-cache/layers/4d904d12a12ad023c04f9db23243641a0a8534cb59133167f0765817d2dad750/32df6d48ab0c9bf35972361cec183e074c0d5a9796598a5a781cae7fdba7445c
 create mode 100644 build/jib-cache/layers/755f2fba049cd7cdeac3962d42e1264a7f886d28a3539962bf23d9d0d1a0c7a1/aa43a23cd92479e93e9629eef1941d7b280557db6024e617b141bf54a5208faf
 create mode 100644 build/jib-cache/layers/791d28e5b9b8c499a4e83f84fd966d450c773eb1997af2bba9b2722a43388af3/3ec9a9fc9f080e751f4ad6b011685a9367edf7c67550637e89fecccecffb6c74
 create mode 100644 build/jib-cache/layers/b11079e0ff492dec1af66031ab5a7773283de96a5d741a62b583d9f5abee6927/b22d3e6ed9f3666db585054e741fae934936249ce15da28e511a0fe3ae2599fa
 create mode 100644 build/jib-cache/layers/ec119c20db4efcad5c20e05ab660f5eeb9260335d8b5dc82e6b9fea38a56bedf/863a0545f63fd81fc33cda8743fab0701418d53601f93e8de5d4840474f04f68
 create mode 100644 build/jib-cache/selectors/003f63c86db9f91d477c34b4607e9f57c666eb2cc4691bd236f2bfbee0c0489b
 create mode 100644 build/jib-cache/selectors/584add658834e5cfe8cfac064d4f01bcc0f5af8ed662d2875a315f72f167484f
 create mode 100644 build/jib-cache/selectors/6f4515d75ae718fac3ebf84c96b18ffb392158ab1027b40463b7fc4d37ae9062
 create mode 100644 build/jib-cache/selectors/aec1d602442a88f42bea409f0a0817f2f007725084f7cde9e39de46c8f7a94c9
 create mode 100644 build/jib-cache/selectors/b8af720e96a684d92743e64f3668ef61ffbaafa1d117026180bf2f577112725f
 create mode 100644 build/jib-cache/selectors/cde6aaa3f2a8ad8c11c443835a5933bff1a1dc6c4d4731debc7168e48c015594
 create mode 100644 build/jib-cache/selectors/d28923f337ae3ab6bfbea476b48e338e189722340a6095146f302db51ce32ff3
 create mode 100644 build/jib-image.digest
 create mode 100644 build/jib-image.id
 create mode 100644 build/jib-image.json
 create mode 100644 build/resources/main/application.properties
 create mode 100644 build/tmp/compileJava/previous-compilation-data.bin
 create mode 100644 gradle/wrapper/gradle-wrapper.jar
 create mode 100644 gradle/wrapper/gradle-wrapper.properties
 create mode 100755 gradlew
 create mode 100644 gradlew.bat
 create mode 100644 out/production/classes/jpa/study/SpringConfig.class
 create mode 100644 out/production/classes/jpa/study/StudyApplication.class
 create mode 100644 out/production/classes/jpa/study/project1/ApiController.class
 create mode 100644 out/production/classes/jpa/study/project1/JpaMemberRepository.class
 create mode 100644 out/production/classes/jpa/study/project1/Member.class
 create mode 100644 out/production/classes/jpa/study/project1/MemberRepository.class
 create mode 100644 out/production/classes/jpa/study/project1/MemberService.class
 create mode 100644 out/production/classes/jpa/study/project1/MemberServiceImpl.class
 create mode 100644 out/production/resources/application.properties
 create mode 100644 out/test/classes/jpa/study/StudyApplicationTests.class
 create mode 100644 out/test/classes/jpa/study/project1/MemberServiceImplTest.class
 create mode 100644 settings.gradle
 create mode 100644 src/main/java/jpa/study/SpringConfig.java
 create mode 100644 src/main/java/jpa/study/StudyApplication.java
 create mode 100644 src/main/java/jpa/study/project1/ApiController.java
 create mode 100644 src/main/java/jpa/study/project1/JpaMemberRepository.java
 create mode 100644 src/main/java/jpa/study/project1/Member.java
 create mode 100644 src/main/java/jpa/study/project1/MemberRepository.java
 create mode 100644 src/main/java/jpa/study/project1/MemberService.java
 create mode 100644 src/main/java/jpa/study/project1/MemberServiceImpl.java
 create mode 100644 src/main/resources/application.properties
 create mode 100644 src/test/java/jpa/study/StudyApplicationTests.java
 create mode 100644 src/test/java/jpa/study/project1/MemberServiceImplTest.java
##git push origin <브랜치명>
git push origin main

Enumerating objects: 106, done.
Counting objects: 100% (106/106), done.
Delta compression using up to 8 threads
Compressing objects: 100% (86/86), done.
Writing objects: 100% (105/105), 33.27 MiB | 4.77 MiB/s, done.
Total 105 (delta 10), reused 0 (delta 0), pack-reused 0
remote: Resolving deltas: 100% (10/10), done.
To https://github.com/xiu0327/github-actions-practice.git
   3ae7a56..9d50968  main -> main

  1. 클러스터키 생성 IAM 및 관리자 > 서비스 계정 작업 > 키관리 > 키 생성 → 계정당 한번만 생성하면 되기 때문에 키를 잘 보관해두면 됨.

  2. Github Actions를 사용하기 위해 GKE key를 등록해줌

    레포지토리 > Setting > Actions > New Repository Secret

  3. 프로젝트 번호 Key 등록

    Cloud 개요 > 대시보드 > 프로젝트 ID 복사 레포지토리 > Setting > Actions > New Repository Secret

  4. workflow 작성

    • github에서 제공하는 템플릿으로 먼저 셋팅해도 됨

    • 근데 GKE 배포용 workflow면 .. 걍 아래를 바탕으로 조금씩 수정하셈 ^^

    • pull_request: 특정 브랜치에서 테스팅 단계를 완료한 기능을 main(원본 저장소)와 병합 요청

    • pod 생성에 사용될 이미지는 환경변수로 설정하지 않고 걍 yaml에 구체적으로 명시함.

      왜냐면 .. jib로 이미지가 push되지 않았기 때문 ..

      이유는 모르겠다 ..

      아마도 데이터 베이스 때문인 것 같다.

      나중에 RDS로 연결한 뒤에 도커 이미지 빌드부분을 추가해야겠다.

name: Build and Deploy to GKE ## Workflow name

on: ## push할 브랜치와 pull_request 등록할 브랜치
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]
  
env: ## 환경변수 설정. 전역 변수라고 생각하면 됨
  PROJECT_ID: ${{secrets.GKE_PROJECT}}
  GKE_CLUSTER: github-actions-gke ## GKE 클러스터 이름
  GKE_ZONE: asia-south1 ## GKE 클러스터 리전
  DEPLOYMENT_NAME: github-actions-gke ## deployment.yaml에서 설정한 deployment name

jobs:
  setup-build-publish-deploy:
    name: Setup Build Publish Deploy
    runs-on: ubuntu-latest ## 빌드 자동화를 진행할 서버 지정. 대부분 우분투를 사용.

    steps:
    - name: Checkout Repository ## 테스트 및 빌드 단계 이름
      uses: actions/checkout@v2 ## checkout 버전은 다양하나 여기선 딱히 고칠 필요 없음

    - name: Set up JDK 11 ## jib 사용해서 도커 이미지 push 하기 위해 java 환경 세팅
      uses: actions/setup-java@v1
      with:
        java-version: 11
      
    # - name: Build with Gradle
    #   run: ./gradlew jib
		## 데이터베이스 연결 문제로 빌드가 안 되는 것 같음. 나중에 제대로 연결해서 빌드해볼 것.

    - name: Setup Google Cloud CLI ## Google Cloud와 연결
      uses: GoogleCloudPlatform/github-actions/[email protected]
      env:
        ACTIONS_ALLOW_UNSECURE_COMMANDS: true
      with:
        service_account_key: ${{secrets.GKE_SA_KEY}} ## json으로 저장했던 key
        project_id: ${{secrets.GKE_PROJECT}} ## secrets 환경 변수에 설정했던 프로젝트 ID

    - name: Set up Kustomize ## Kustomize 설치
      run: |
        curl -o kustomize --location https://github.com/kubernetes-sigs/kustomize/releases/download/v3.1.0/kustomize_3.1.0_linux_amd64
        chmod u+x ./kustomize

    - name: GKE Deploy ## deployment와 service(LoadBalancer) 구축
      run: |
        gcloud container clusters get-credentials $GKE_CLUSTER --zone $GKE_ZONE
        ./kustomize build . | kubectl apply -f -
        kubectl rollout status deployment/$DEPLOYMENT_NAME
        kubectl get services -o wide

  • gcloud container clusters get-credentials $GKE_CLUSTER --zone $GKE_ZONE

    → 클러스터 생성하는 명령어

    → 기본적으로 4개의 노드가 생성된다.

    명령어에 지정된 머신 유형, 노드 수, 기타 설정으로 무료 체험 Apigee Hybrid 설치에 적합한 최소 구성 클러스터가 생성됩니다.

    노드 지정없이 클러스터를 생서하면 무료 버전에 적합한 수만큼 노드가 생성된다고 하니 요금 걱정은 안 해도 될 듯하다.

    gcloud container clusters create cluster-name \
--machine-type "n1-standard-4" --num-nodes "3" --enable-autoscaling --min-nodes "3" --max-nodes "6"

    노드 개수를 지정하고 싶으면 위와 같이 --num-nodes 로 지정할 수 있다.

  • ./kustomize build . | kubectl apply -f -

    → yaml 파일로 작성한 deployment와 service 리소스를 생성하는 단계. kustomization으로 리소스를 생성하면 굳이 kubectl apply -f <yaml_파일명>을 손수 쳐주지 않아도 된다.

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

resources:
  - deployment.yaml
  - service.yaml

  • kubectl rollout status deployment/$DEPLOYMENT_NAME, kubectl get services -o wide

    → 이건 deploy와 service가 잘 생성되었는지 출력해보기 위함이다. rollout은 왜 했는지 좀 찾아봐야겠다. 단순 확인하는 용도라면 kubectl get deploy만 해도 되지 않을까.. 싶긴하다.

~ (gitjub-actions-gke)$ kubectl get po,rs,deploy,service

NAME                                      READY   STATUS    RESTARTS   AGE
pod/github-actions-gke-7565497555-8pmqj   1/1     Running   0          6m33s
pod/github-actions-gke-7565497555-xsz6j   1/1     Running   0          6m33s

NAME                                            DESIRED   CURRENT   READY   AGE
replicaset.apps/github-actions-gke-7565497555   2         2         2       6m34s

NAME                                 READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/github-actions-gke   2/2     2            2           6m34s

NAME                     TYPE           CLUSTER-IP    EXTERNAL-IP      PORT(S)          AGE
service/kubernetes       ClusterIP      10.26.0.1     <none>           443/TCP          140m
service/spring-service   LoadBalancer   10.26.0.188   <외부IP>   8080:31928/TCP   6m37s

앞으로 보완해야할 사항

  1. Ingress로 포트번호 감추기
  2. RDS 연결해서 배포해보기
  3. LoadBalancer 공부가 좀 더 필요할 것 같다
    • 엔드 포인트로 접속하니까 api가 안 뜨더라 ..
    • EXTERNAL-IP로 접속해야하는데, 외부 IP는 .. 고정된 IP인가..? 조금 더 알아봐야겠다 ..

아무튼 실습 끝 .

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