[Docker] [도커 기본 개념] [실습] docker registry - 컨테이너 보관창고

Docker Registry

- 여러 형태의 컨테이너 이미지가 모여있는 공간

- 권한에 따라

   public : dockerHub

   private : registry 컨테이너를 이용

•  링크 : https://hub.docker.com/_/registry

$ docker run -d -p 5000:5000 --restart always --name registry registry:2

• dockerHost이름:포트넘버/컨테이너이미지       ex) localhost:5000/ubuntu:18.04

 

[실습1] hub.docker.come 에 컨테이너 업로드 및 다운로드

 

1. 도커 허브에서 httpd 컨테이너 검색

$ docker seach httpd

-official : 도커허브에서 직접제공

[guru@docker-centos ~]$ docker search httpd
NAME                                    DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
httpd                                   The Apache HTTP Server Project                  4029      [OK]       
centos/httpd-24-centos7                 Platform for running Apache httpd 2.4 or bui…   44                   
centos/httpd                                                                            35                   [OK]
hypoport/httpd-cgi                      httpd-cgi                                       2                    [OK]
solsson/httpd-openidc                   mod_auth_openidc on official httpd image, ve…   2                    [OK]
dockerpinata/httpd                                                                      1                    
nnasaki/httpd-ssi                       SSI enabled Apache 2.4 on Alpine Linux          1                    
centos/httpd-24-centos8                                                                 1                    
jonathanheilmann/httpd-alpine-rewrite   httpd:alpine with enabled mod_rewrite           1                    [OK]
inanimate/httpd-ssl                     A play container with httpd, ssl enabled, an…   1                    [OK]
manageiq/httpd                          Container with httpd, built on CentOS for Ma…   1                    [OK]
dariko/httpd-rproxy-ldap                Apache httpd reverse proxy with LDAP authent…   1                    [OK]
clearlinux/httpd                        httpd HyperText Transfer Protocol (HTTP) ser…   1                    
publici/httpd                           httpd:latest                                    1                    [OK]
httpdocker/kubia                                                                        0                    
patrickha/httpd-err                                                                     0                    
manageiq/httpd_configmap_generator      Httpd Configmap Generator                       0                    [OK]
e2eteam/httpd                                                                           0                    
amd64/httpd                             The Apache HTTP Server Project                  0                    
paketobuildpacks/httpd                                                                  0                    
manasip/httpd                                                                           0                    
9af925e7043/httpd                                                                       0                    
sandeep1988/httpd-new                   httpd-new                                       0                    
19022021/httpd-connection_test          This httpd image will test the connectivity …   0                    
httpdss/archerysec                      ArcherySec repository                           0                    [OK]

 

2. 이미지 다운 받기

$ docker pull httpd:latest

[guru@docker-centos ~]$ docker pull httpd:latest
latest: Pulling from library/httpd
42c077c10790: Pull complete 
77a357ba66a8: Pull complete 
c56c780a8904: Pull complete 
90bcc5e941a7: Pull complete 
571750298b32: Pull complete 
Digest: sha256:c479bec894c5a7f8878b28e52d03cc95b1e784612ecd01ac7c7394fc5fa2e6e2
Status: Downloaded newer image for httpd:latest
docker.io/library/httpd:latest

 

3. 다운 받은 이미지 확인

$ docker images

[guru@docker-centos ~]$ docker images
REPOSITORY   TAG       IMAGE ID       CREATED      SIZE
httpd        latest    98f93cd0ec3b   7 days ago   144MB

 

4. 도커 로그인 

$ docker login

- 별도로 로그아웃 전 까지는 /home/guru/.docker/config.json 에 로그인 정보가 저장됨

[guru@docker-centos ~]$ docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: isawmy
Password: 
WARNING! Your password will be stored unencrypted in /home/guru/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded

 

5. 레퍼지토리 사용을 위해 이미지 이름 변경

$ docker tag httpd:latest isawmy/httpd:latest

[guru@docker-centos ~]$ docker tag httpd:latest isawmy/httpd:latest

 

6. 도커 허브 레퍼지토리에 업로드

$ docker push isawmy/httpd:latest

- 업로드 되면, 누구든지 다운받을 수 있게 됨

[guru@docker-centos ~]$ docker push isawmy/httpd:latest
The push refers to repository [docker.io/isawmy/httpd]
61c1dd0ba4bd: Mounted from library/httpd 
b83b02d70215: Mounted from library/httpd 
4a48959ac654: Mounted from library/httpd 
4e2b986e3da3: Mounted from library/httpd 
ad6562704f37: Mounted from library/httpd 
latest: digest: sha256:a17755a2d2e581779d2ab6b5df6992a754a16503961f6a9d4e908c71c3d46f2d size: 1365

 

7. 도커 허브의 레퍼지토리 에서 확인 가능

 

[실습 2] Private Registry 운영하기

 

https://hub.docker.com/_/registry

Registry - Official Image | Docker Hub

 

1. 로컬 레지스트리 실행하기

$ docker run -d -p 5000:5000 --restart always --name registry registry:2

[guru@docker-centos ~]$ docker run -d -p 5000:5000 --restart always --name registry registry:2
Unable to find image 'registry:2' locally
2: Pulling from library/registry
2408cc74d12b: Pull complete 
ea60b727a1ce: Pull complete 
c87369050336: Pull complete 
e69d20d3dd20: Pull complete 
fc30d7061437: Pull complete 
Digest: sha256:bedef0f1d248508fe0a16d2cacea1d2e68e899b2220e2258f1b604e1f327d475
Status: Downloaded newer image for registry:2
435f00e5515759171fa6b40c291a9cfb0951e37a93f28988bd7087e57d1882a2

- 컨테이너 저장소

 

2. 이미지 이름 변경

$ docker tag httpd:latest localhost:5000/httpd:latest

[guru@docker-centos ~]$ docker tag httpd:latest localhost:5000/httpd:latest

 

3. 로컬 레지스트리에 업로드

$ docker push localhost:5000/httpd:latest

- 컨테이너 저장소가 모여있는 위치 : /var/lib/docker/volumes/컨테이너이름uuid/_data/docker/registry/v2/repositories

[guru@docker-centos ~]$ docker push localhost:5000/httpd:latest
The push refers to repository [localhost:5000/httpd]
61c1dd0ba4bd: Pushed 
b83b02d70215: Pushed 
4a48959ac654: Pushed 
4e2b986e3da3: Pushed 
ad6562704f37: Pushed 
latest: digest: sha256:a17755a2d2e581779d2ab6b5df6992a754a16503961f6a9d4e908c71c3d46f2d size: 1365