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+---
+title: 할 수 있다! 서비스 월 유지비 1000원!
+authors:
+  - juunini
+date: 2024-03-04T12:18:00.792Z
+feature_image: images/cover.webp
+categories:
+  - Hands On
+tags:
+  - GCP
+  - Google Cloud
+  - Serverless
+  - Cloud Run
+  - 서버리스
+---
+
+Referenced: https://velog.io/@juunini/service-monthly-keep-1000won
+
+서비스 월 유지비 1000원,  
+남의 이야기가 아닙니다. 당신도 할 수 있습니다.
+
+여러분의 토이 프로젝트,  
+더 이상 VM(aka. EC2)에 올려서 월 2만원씩 쓰지 마십시오.
+
+https://snippet.cloudmt.co.kr/  
+제가 만든 이 서비스가 그렇게 돌고 있습니다.
+
+![](./images/1.png)
+
+~~그래도 DNS 가격 제외하고 보면 대충 600원인데 혁명 아임미까?!~~
+
+# 시작하기에 앞서
+
+시작하기에 앞서 사전 지식이 필요한데요,  
+Dockerfile을 작성하실 수 있어야 합니다.
+
+하지만 모르셔도 지금 가서  
+[실무에서 개발자는 여기까지만 알면 되는 도커 / 쿠버네티스](https://velog.io/@juunini/%EC%8B%A4%EB%AC%B4%EC%97%90%EC%84%9C-%EA%B0%9C%EB%B0%9C%EC%9E%90%EB%8A%94-%EC%97%AC%EA%B8%B0%EA%B9%8C%EC%A7%80%EB%A7%8C-%EC%95%8C%EB%A9%B4-%EB%90%98%EB%8A%94-%EB%8F%84%EC%BB%A4-%EC%BF%A0%EB%B2%84%EB%84%A4%ED%8B%B0%EC%8A%A4) 를 읽고 오시면  
+금방 따라오실 수 있을겁니다.
+
+# 구성
+
+이번 글에서는 **Google Cloud**를 이용해 구축하는 방법을 설명할겁니다.  
+
+- **Cloud Run** - 흔히들 아는 서버리스
+- **Cloud Storage** - 저장소. sqlite를 여기에 저장하고 불러올 예정
+- **Artifact Registry** - Container Image를 push 할 저장소
+
+이게 끝입니다.
+
+![](./images/2.png)
+
+~~VM갖고 서버 올리는거밖에 할 줄 몰랐는데~~  
+~~말로만 듣던 서버리스 해본다 카니~~  
+~~콧구멍이 벌렁벌렁 하지 않으십니까~~
+
+# 흐름
+
+1. 작성한 코드를 Dockerfile을 이용해 Container Image로 만든다.
+2. Artifact Registry로 Push 한다.
+3. Artifact Registry의 이미지를 Cloud Run에 배포한다.
+4. Cloud Run에 Cloud Storage를 Mount 시키는 설정을 추가한다.
+
+대략 이런 간단한 흐름입니다.
+
+# 시작
+
+## 간단한 웹 앱 작성
+
+- \[POST\] /api/tasks - task 생성
+- \[DELETE\] /api/tasks/:id - task를 삭제
+- \[GET\] /api/tasks - task 목록을 응답
+- \[GET\] / - 웹 앱
+
+이런 간단한 코드입니다.  
+코드는 [여기](https://github.com/juunini/golang-simple-server-sample)에서 확인할 수 있습니다.
+
+![](./images/3.png)
+
+~~Golang 쓰세요 여러분, [Golang 하면 존123나 카리스마있어](https://velog.io/@juunini/golang-john123na-carisma)~~
+
+## Dockerfile 작성
+
+예제는 [여기](https://github.com/juunini/golang-simple-server-sample/blob/main/Dockerfile)서 볼 수 있습니다.  
+하지만 가서 보기 귀찮으실테니
+
+```dockerfile
+FROM golang:alpine3.19 AS builder
+
+WORKDIR /app
+ADD . /app
+
+ENV CGO_ENABLED=1
+RUN apk add --no-cache gcc musl-dev &&\
+    go build -o app
+
+FROM alpine:3.19
+
+WORKDIR /
+
+COPY --from=builder /app/app /app
+
+CMD ["/app"]
+```
+
+builder를 따로 두고  
+빌드 된 실행파일만 alpine으로 옮겨서  
+컨테이너 이미지로 빌드하는 구조입니다.  
+
+## Container 빌드
+
+다 됐으면 이제 잘 되는지 해봐야 합니다.  
+~~왜냐면 나중에 안되는 컨테이너 이미지 올려놓고 안된다 카면 안되거든~~
+
+```bash
+docker build . -t sample
+docker run -dit -p 8080:8080 --name sample sample
+open http://localhost:8080
+```
+
+(마지막에 `open http://localhost:8080` 은 windows는 안될수도 있음)
+
+![](./images/4.png)
+
+대충 이런 화면이 나오면 잘 된겁니다.  
+여기에 뭐 이것저것 아무거나 써서 add 눌러보면
+
+![](./images/5.png)
+
+대충 이런 식으로 추가가 되고 Delete 누르면 잘 삭제가 되는걸 확인하실 수 있습니다.
+
+## Artifact Registry 생성
+
+![](./images/6.png)
+
+`Artifact Registry` 눌러서 들어가시면
+
+![](./images/7.png)
+
+이런 화면이 나올텐데  
+누른다고 곧장 돈 나가는거 아니니 걱정 말고 사용 누르세요.
+
+![](./images/8.webp)
+
+![](./images/9.png)
+
+저는 대충 이렇게 입력했는데,  
+여러분도 알아서 잘 입력하고 만들기 버튼을 누르세요.
+
+![](./images/10.png)
+
+이렇게 잘 만들어졌으면 잘 하신겁니다.  
+다음 단계로 넘어가죠.
+
+### Google Cloud Cli 로그인
+
+[Google Cloud Cli](https://cloud.google.com/sdk/docs/install?hl=ko)를 설치해야 합니다.  
+[링크](https://cloud.google.com/sdk/docs/install?hl=ko) 를 클릭해서 설치하세요.
+
+설치를 마쳤으면 터미널에 아래 명령어를 입력합니다.
+
+```bash
+gcloud auth login
+```
+
+자동으로 웹브라우저가 열리며 로그인 절차를 밟으면 로그인이 됩니다.
+
+![](./images/11.png)
+
+완료가 되면 이런 메시지가 나올텐데,  
+`PROJECT_ID`는 대시보드에서 확인할 수 있습니다.
+
+![](./images/12.png)
+
+![](./images/13.png)
+
+```bash
+gcloud config set project cultivated-link-416112
+```
+
+저의 경우엔 이렇게 입력했습니다.  
+여러분의 `PROJECT_ID`를 집어넣으세요.  
+~~위에꺼 그대로 복붙해놓고 안된다 소리 하지 마시고~~
+
+## Artifact Registry에 Push
+
+아까의 Artifact Registry로 다시 돌아가서,  
+생성된 Repository를 누르면 아래와 같은 화면이 나옵니다.
+
+![](./images/14.webp)
+
+`설정 안내`를 누르면 `gcloud` 명령어를 통해 `docker login` 하는 방법을 안내해줍니다.
+
+![](./images/15.png)
+
+맨 아래에 있는 명령어를 복사해서 입력하면 아래와 같은 화면이 나옵니다.
+
+![](./images/16.png)
+
+그럼 준비는 다 됐으니 아까 빌드한 컨테이너 이미지를 푸시하면 됩니다.
+
+![](./images/17.webp)
+
+이 버튼을 누르면 Repository의 주소가 복사되는데, 그걸 이용해 태그를 입혀줍니다.  
+저희 경우엔 아래처럼 입력했습니다.
+
+```bash
+docker tag sample asia-northeast3-docker.pkg.dev/cultivated-link-416112/sample/sample:0.1
+docker push asia-northeast3-docker.pkg.dev/cultivated-link-416112/sample/sample:0.1
+```
+
+![](./images/18.png)
+
+제대로 push 되었다면 이렇게 됩니다.
+
+![](./images/19.png)
+
+`0.1` 이라고 태그도 제대로 나오는게 확인됩니다.
+
+여기까지 잘 따라오셨으면 이제  
+~~서버 올리실 줄 알았겠지만~~  
+sqlite를 mount 시킬 스토리지를 생성해야 합니다.
+
+## Cloud Storage 생성
+
+![](./images/20.png)
+
+![](./images/21.webp)
+
+다 생성되고 나서, 제가 만든 코드에서는 `sqlite.db` 라는 파일을 사용하므로
+
+```bash
+touch sqlite.db
+```
+
+로 비어있는 `sqlite.db` 라는 파일을 만든 후 버킷에 업로드 시켰습니다.
+
+![](./images/22.png)
+
+## Cloud Run 생성
+
+![](./images/23.png)
+
+![](./images/24.webp)
+
+![](./images/25.webp)
+
+![](./images/26.png)
+
+아까 push한 컨테이너 이미지를 선택할겁니다.
+
+![](./images/27.webp)
+
+~~은행 대출 상품 체크하는 그건가~~  
+빨간색 표시된 곳을 확인하시고,  
+다 했으면 맨 아래의 화살표를 클릭합니다.
+
+![](./images/28.webp)
+
+컨테이너 포트를 여러분의 컨테이너 이미지에 맞게 수정하세요.  
+저는 8080으로 수정했습니다.
+
+![](./images/29.webp)
+
+실행 환경은 꼭 2세대를 해야 합니다.  
+그래야 Cloud Storage 마운트가 가능합니다.
+
+다 되면 만들기 버튼을 클릭하세요.
+
+![](./images/30.webp)
+
+표시된 URL을 클릭하면 컨테이너 앱을 확인할 수 있습니다.
+
+### Cloud Storage 마운트
+
+왠만하면 모든걸 웹 콘솔의 GUI 환경에서 진행하려 했는데  
+Cloud Storage를 마운트 하는건 beta 기능이라 터미널에서만 설정할 수 있습니다.
+
+참고: https://cloud.google.com/run/docs/configuring/services/cloud-storage-volume-mounts?hl=ko
+
+```bash
+gcloud beta run services update sample \
+--execution-environment gen2 \
+--add-volume=name=db_volume,type=cloud-storage,bucket=juunini-1000-won-sample \
+--add-volume-mount=volume=db_volume,mount-path=/mnt/juunini-1000-won-sample \
+--region=asia-northeast3
+```
+
+저는 위 처럼 입력했는데,  
+여러분은 여러분의 상황에 맞게 잘 수정해서 넣으세요.  
+~~그대로 복붙해놓고 안된다 그럼 안되는겨~~
+
+![](./images/31.webp)
+
+잘 됐으면 이런식으로 표시가 됩니다.  
+~~무수한 삽질의 흔적은 신경쓰지 마시길~~
+
+![](./images/32.webp)
+
+그럼 이제 마운트 한 볼륨을 사용해야 하니 수정하러 들어갑시다.
+
+![](./images/33.webp)
+
+제가 만든 웹 앱 코드에서  
+`DB_FILE_NAME` 이라는 ENV값을 통해  
+sqlite 파일의 경로를 바꿀 수 있게 해두었습니다.
+
+이렇게 하고 수정하면 해당 환경변수에 설정된 경로의 파일을  
+sqlite 파일로 사용할 것이므로  
+Cloud Storage에 있는 파일을 sqlite db로 사용할 수 있습니다.
+
+# 결과 확인!
+
+![](./images/34.png)
+
+Cloud Run으로 실행된 웹 앱에 들어가서 대충 이렇게 입력한 뒤에  
+Cloud Storage에 들어가면...
+
+![](./images/35.webp)
+
+용량이 0B 였는데 16KB로 변했습니다.
+
+![](./images/36.png)
+
+파일을 다운받아서 sqlite3 cli로 확인해보면  
+입력한 내용이 잘 적용된 것을 확인할 수 있습니다.
+
+이제 여러분은 서버리스를 이용해서  
+여러분의 프로젝트를 월 1000원 선에서 유지가 가능합니다!
+
+# 말 나올 부분을 미리 캐치하자면
+
+![](./images/37.png)
+
+여기서는 sqlite를 썼고,  
+Cloud Storage 마운트는 GCSFuse를 쓰기에 속도가 느리니  
+DB를 사용하는데 속도가 떨어질 수 밖에 없는 구조입니다.
+
+그리고 인스턴스가 여러개 생성되면  
+sqlite의 안정성에 대한 의문도 생길 수 있습니다.
+
+여러 인스턴스가 하나의 sqlite 파일을 사용하는 경우,  
+Read에서는 괜찮지만 Write 시에는 Lock 상태가 되어  
+다른 요청들이 실패하게 됩니다.  
+참고: https://www.sqlite.org/faq.html#q5
+
+그러니 가벼운 '토이 프로젝트' 레벨에서만  
+sqlite를 마운트 시켜 사용하는걸 권장합니다.
+
+뭐, 토이 프로젝트라도 규모가 커져서 사용자가 많아지면  
+따로 DB 인스턴스를 만들어 마이그레이션 하셔야 할겁니다.