Docker 명령어 정리(feat pgadmin4 )

Docker

Docker 는 컨테이너를 이용한 가상화 플랫폼이다. 마치 Java VM 이 설치만 되어 있으면 운영체제나 하드웨어의 의존하지 않고 자바 소프트웨어를 구동할 수 있듯이 Docker가 설치되어 있으면 Docker로 빌드된 소프트웨어를 구동할 수 있다. Docker에 대한 자세한 설명과 설치 방법은 생략하고 Pgadmin4 라는 postgresql DB 관리 Tool로 Docker의 기본 명령어를 간단히 알아보겠다.

 

>docker system info

Docker 의 구체적인 상태 정보등을 확인할수있다. 

docker system info
Client:
 Debug Mode: false

Server:
 Containers: 1
  Running: 1
  Paused: 0
  Stopped: 0
 Images: 1
 Server Version: 19.03.2
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
 runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 4.9.184-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 1.952GiB
 Name: docker-desktop
 ID: 3INB:RHWH:UOYH:7Z3L:A7EO:QVW3:GSTL:C4GY:UX2Q:WQOH:DKMK:USFG
 Docker Root Dir: /var/lib/docker
 Debug Mode: true
  File Descriptors: 39
  Goroutines: 56
  System Time: 2019-10-22T00:47:14.5450312Z
  EventsListeners: 4
 HTTP Proxy: gateway.docker.internal:3128
 HTTPS Proxy: gateway.docker.internal:3129
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: true
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false
 Product License: Community Engine

 

>docker search pgadmin

Docker Hub Repository 에서 이미지를 검색한다. Start(github 에 스타와 같은 의미), 공식 여부등 정보가 조회된다. 

docker search pgadmin
NAME                           DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
dpage/pgadmin4                 pgAdmin 4 is a web based administration tool…   418
fenglc/pgadmin4                pgAdmin is an open source administration and…   43
thajeztah/pgadmin4             Simple Docker image for pgAdmin 4. Not inten…   22                                      [OK]
meedan/pgadmin                 pgadmin 4 web interface                         4                                       [OK]
foxylion/pgadmin4              PostgreSQL pgAdmin 4 with binary support (ba…   3                                       [OK]
jdecool/pgadmin                PgAdmin in a container                          2                                       [OK]
pivotaldata/pgadmin            Multiple docker images that support the regr…   2
huggla/pgadmin-alpine          Pgadmin4 on Alpine, with enhanced security.     2                                       [OK]
vxsoft/pgadmin4                Pgadmin                                         1                                       [OK]
zfil/pgadmin3                  pgadmin3 from Ubuntu Xenial (16.04 LTS)         1                                       [OK]
elesdoar/pgadmin4              Dockerized Image for pgAdmin4                   1                                       [OK]
ddidier/pgadmin4               The pgAdmin 4 administration tool for Postgr…   1                                       [OK]
nphung/pgadmin                 Docker image for pgAdmin (pgAdmin 4 v1.5 at …   0                                       [OK]
pgadmin/ripdock                                                                0
pgadmin/ripmain                                                                0
biarms/pgadmin4                A docker image for running PGAdmin on an arm…   0
jouve/pgadmin4                 pgadmin4 with python3.6 define PGADMIN_SETUP…   0                                       [OK]
rekgrpth/pgadmin               pgadmin                                         0                                       [OK]
stivehu/pgadmin4               pgadmin4 dockerized version                     0                                       [OK]
regiowebapi/pgadmin            pgadmin4                                        0
ddidier/pgadmin                The pgAdmin 3 administration tool for Postgr…   0                                       [OK]
russell/pgadmin4               pgadmin4 container                              0                                       [OK]
bernardelli/pgadmin4           PgAdmin4 local server                           0                                       [OK]
computersciencehouse/pgadmin   Dockerized pgAdmin                              0                                       [OK]
appscode/pgadmin

 

>docker pull 

docker hub에 있는 이미지를 로컬에 다운로드한다.

docker pull dpage/pgadmin4
Using default tag: latest
latest: Pulling from dpage/pgadmin4
9d48c3bd43c5: Pull complete
c0ea575d71b9: Pull complete
0f535eceebd5: Pull complete
8a30f5893bea: Pull complete
c1d30ace7b67: Pull complete
07864167d918: Pull complete
93c729eb2d67: Pull complete
6a90a70187ea: Pull complete
f8a53155b1f0: Pull complete
ea53e07e3c59: Pull complete
f5ef29937d52: Pull complete
1b62ccab5a71: Pull complete
db226905ceae: Pull complete
425a6f100488: Pull complete
Digest: sha256:de7c6c8fa54b6b5fbf00fd594623292350856ebe5bad540baa5773aa65b75bb7
Status: Downloaded newer image for dpage/pgadmin4:latest
docker.io/dpage/pgadmin4:latest

 

> docker run -p 80:80  -e 'PGADMIN_DEFAULT_EMAIL=user@domain.com'  -e 'PGADMIN_DEFAULT_PASSWORD=SuperSecret' -d dpage/pgadmin4

내려받은 이미지를 구동한다. -p 80:80 은 로컬 PC 의 80 port 와 docker container 80 port 를 binding 한다는 의미이다. -v 옵션으로 디스크도 마운트 할 수 있다. -e 'PGADMIN_DEFAULT_EMAIL=user@domain.com' 는 어플리케이션에 전달할 환경변수 값이다. -d demon 형태로 구동을 의미하고 dpagd/pgadmin4 는 이미지 명이다.

docker run -p 80:80  -e 'PGADMIN_DEFAULT_EMAIL=user@domain.com'  -e 'PGADMIN_DEFAULT_PASSWORD=SuperSecret' -d dpage/pgadmin4
ac8ac037b9e7820b411fdc75a31c5dc36c73a4b327c9d39141288724c6d3df6f

 

> docker container list

현재 구동중인 container 리스트 확인 -a 옵션으로 stop 되어있는 container 전부를 확인 할 수도 있다.

docker container list
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                         NAMES
ac8ac037b9e7        dpage/pgadmin4      "/entrypoint.sh"    33 seconds ago      Up 32 seconds       0.0.0.0:80->80/tcp, 443/tcp   compassionate_swartz

 

>docker stats 

현재 구동중인 container 의 리소스 사용율을 확인

docker stats
CONTAINER ID        NAME                   CPU %               MEM USAGE / LIMIT     MEM %               NET I/O             BLOCK I/O           PIDS
ac8ac037b9e7        compassionate_swartz   0.05%               93.02MiB / 1.952GiB   4.65%               1.11kB / 0B         0B / 2.55MB         5

 

>docker container logs ac8ac037b9e7

container 의 표춘 출력 확인

docker container logs ac8ac037b9e7
NOTE: Configuring authentication for SERVER mode.

[2019-10-22 01:08:22 +0000] [1] [INFO] Starting gunicorn 19.9.0
[2019-10-22 01:08:22 +0000] [1] [INFO] Listening at: http://[::]:80 (1)
[2019-10-22 01:08:22 +0000] [1] [INFO] Using worker: threads
[2019-10-22 01:08:22 +0000] [84] [INFO] Booting worker with pid: 84

 

>docker container exec -it ac8ac037b9e7 /bin/sh

container 내부 실행 exec 는 실행 명령어를 전달한다. -i 는 대화형 모드 , -t tty 연결 /bin/sh shell 실행  즉 위 명령어는 컨테이너 안으로terminal 을 연결한다.

 docker container exec -it ac8ac037b9e7 /bin/sh
/pgadmin4 # ls    //container 안에서 ls 명령어 실행
__pycache__       config.py         config_distro.py  docs              migrations        pgAdmin4.py       pgAdmin4.wsgi     pgadmin           requirements.txt  run_pgadmin.py    setup.py

 

>docker container stop ac8ac037b9e7

container 중단

docker container stop ac8ac037b9e7
ac8ac037b9e7

 

>docker container start ac8ac037b9e7

container 시작

docker container start ac8ac037b9e7
ac8ac037b9e7

 

>docker container rm ac8ac037b9e7

docker container 삭제

docker container rm ac8ac037b9e7
ac8ac037b9e7

 

>docker image ls dpage/pgadmin4

docker 이미지 리스트

docker image ls
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
dpage/pgadmin4      latest              177213947c28        5 days ago          265MB

 

>docker image rm dpage/pgadmin4

docker image 삭제

docker image rm dpage/pgadmin4
Untagged: dpage/pgadmin4:latest
Untagged: dpage/pgadmin4@sha256:de7c6c8fa54b6b5fbf00fd594623292350856ebe5bad540baa5773aa65b75bb7
Deleted: sha256:177213947c28da62c810a11e4d968b99bf0d38cf29bb4749b6f47df71c105000
Deleted: sha256:fcfb8d606458935c518217aacc2fe16d6ddccce48c517d904207f078236cf06e
Deleted: sha256:85e49d6488491577674c2017d7f3940c40481ee46fed3bb6309badec6d580df3
Deleted: sha256:af51aea1bdd82d1e22b6dd1a68ffa5c20af927ae994ba012bfe355012571fb86
Deleted: sha256:b2a9fe11fe82a773e0ae0d2a1e7ab758dc92bf6a5491ce5acc07003c2973b265
Deleted: sha256:90df4f6897730ef058112c05372f55e61bdc6fe91e9b4ddff9daa7119683a14c
Deleted: sha256:878a372a55c2cb2924877c56b80dac81f4c10d56b0c70769af83ed7ab4b8af20
Deleted: sha256:574443b0bc1e3e83f810682e4cc5dfcf7d078ac00516a96f9a79784dd0423e4e
Deleted: sha256:61d6aa596a825bf76448c1be01802624e39c679cc3562ab699622bca3af628ac
Deleted: sha256:0d900f959cd2addf5b2b84b273c1500fffed8ae548e975e8a8980a30e3878182
Deleted: sha256:e6625f98ac0c8a9846bffd5c6bc1e03f2d304a226e1007f14b1c497eff4dbec5
Deleted: sha256:d29d8196ccaefe8152e00abf39a4dee63f4ac5332b4c33e98fa07e34f19babf9
Deleted: sha256:816d01bd7acfaf270620be8d7eb8519abcc8254f22a21451a1ebcb1cde73f514
Deleted: sha256:eecb32456f471dc2eb0d209190db6e1f0f97040d6d353c16bbec3ce7a366cc07
Deleted: sha256:03901b4a2ea88eeaad62dbe59b072b28b6efa00491962b8741081c5df50c65e0

 

기타 유용한 명령어

>docker cp ${컨테이터명}:/tmp/test.txt ./test.txt

docker container 안에 파일을 호스트로 복사하기, 반대로 입력하면 호스트에서 container 안으로 파일 복사가 가능하다.

>docker run ${컨테이너명} --entrypoint /bin/bash

기존의 entrypoint 로 설정된 내용을 override 하고 실행 위 샘플 명령어는 bash를 실행한다.