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Private Docker Registry

Private Docker Registry

  1. Docker registry Images 가져오기 
     docker pull registry:latest
  2. docker images
  3. hyunsu@kubemaster:/etc/docker/registry$ sudo mv ./config.yml ./config.yml.20201022

  4. config

    version: 0.1
log:
  fields:
    service: registry
storage:
  cache:
    blobdescriptor: redis
  filesystem:
    rootdirectory: /data/registry
redis:
  addr: redis:6379
http:
  addr: :5000
  headers:
    X-Content-Type-Options: [nosniff]
health:
  storagedriver:
    enabled: true
    interval: 10s
    threshold: 3

  5. docker run -d -p 9002:5000 -e REGISTRY_STORAGE_DELETE_ENABLED=true  --restart=always --name JoangPrivateDocker -v /etc/docker/registry/config.yml:/etc/docker/registry/config.yml registry:2
    : -e REGISTRY_STORAGE_DELETE_ENABLED=true 옵션은 이미지를 삭제를 할 수 있다는 의미로 아래 DELETE 명령이 동작한다. 
    안하면 {"errors":[{"code":"UNSUPPORTED","message":"The operation is unsupported."}]} 오류가 발생 

  6. docker ps -a
  7. docker ps -l (최근)
  8. netstat -an | grep 9002 (확인)

Private Docker 사용

  1. docker build -t tomcat-meta:0.1 .
  2. docker tag tomcat-meta:0.1 web.joang.com:9002/tomcat-meta:0.1
  3. docker tag를 이용하여 docker registry에 push 
    cat /etc/docker/daemon.json
{
 "insecure-registries" : ["web.joang.com:9002"]
}
    systemctl restart docker
  4. docker push web.joang.com:9002/tomcat-meta:0.1

  5. 확인 http://web.joang.com:9002/v2/_catalog

  6. http://web.joang.com:9002/v2/tomcat-meta/tags/list

Private image delete

  1. curl -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET http://192.168.56.3:9002/v2/tomcat-synapse/manifests/0.1 2>&1 | grep Docker-Content-Digest | awk '{print ($3)}'

  2. curl -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X DELETE http://192.168.56.3:9002/v2/tomcat-synapse/manifests/sha256:65336b7ee5a56dc2a7294c02fbb515542e5212a7ea193943160d9ecbb4ca0f62

  3. GC(Garbage Collection) 
    docker exec -it JoangPrivateDocker registry garbage-collect /etc/docker/registry/config.yml
  4. Image 정리 
    docker image prune -f
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