Docker install
# Docker EE 와 CE 차이
– Docker Enterprise Edition / Docker Community Edition
# Docker install
Ubuntu 16.04
test@docker-test:~$ curl -s https://get.docker.com/ | sudo sh
CentOS7
# yum install -y yum-utils device-mapper-persistent-data lvm2 # yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo # yum install docker-ce # systemctl enable docker # systemctl start docker
# sudo 없이 사용하기
docker는 기본적으로 root권한이 필요합니다. root가 아닌 사용자가 sudo없이 사용하려면 해당 사용자를 docker그룹에 추가합니다.
sudo usermod -aG docker $USER # 현재 접속중인 사용자에게 권한주기
test@docker-test:~$ sudo usermod -aG docker test
사용자가 로그인 중이라면 다시 로그인 후 권한이 적용됩니다.
# Docker Version 확인
test@docker-test:~$ docker version Client: Version: 17.03.0-ce API version: 1.26 Go version: go1.7.5 Git commit: 60ccb22 Built: Thu Feb 23 11:02:43 2017 OS/Arch: linux/amd64 Server: Version: 17.03.0-ce API version: 1.26 (minimum version 1.12) Go version: go1.7.5 Git commit: 60ccb22 Built: Thu Feb 23 11:02:43 2017 OS/Arch: linux/amd64 Experimental: false test@docker-test:~$
# Container 실행
docker run [OPTIONS] IMAGE[:TAG|@DIGEST] [COMMAND] [ARG...] 옵션 설명 -d : detached mode 흔히 말하는 백그라운드 모드 -p : 호스트와 컨테이너의 포트를 연결 (포워딩) -v : 호스트와 컨테이너의 디렉토리를 연결 (마운트) -e : 컨테이너 내에서 사용할 환경변수 설정 -name : 컨테이너 이름 설정 -rm : 프로세스 종료시 컨테이너 자동제거 -it : -i 와 -t 를 동시에 사용한것으로 터미널 입력을 위한 옵션 -link : 컨테이너 연결 [컨테이너명:별칭]
# Ubuntu 16.04 Container 생성
test@docker-test:~$ docker run ubuntu:16.04 Unable to find image 'ubuntu:16.04' locally 16.04: Pulling from library/ubuntu d54efb8db41d: Pull complete f8b845f45a87: Pull complete e8db7bf7c39f: Pull complete 9654c40e9079: Pull complete 6d9ef359eaaa: Pull complete Digest: sha256:dd7808d8792c9841d0b460122f1acf0a2dd1f56404f8d1e56298048885e45535 Status: Downloaded newer image for ubuntu:16.04 test@docker-test:~$
# Ubuntu 16.04 컨테이너 실행 및 컨테이너 접속
test@docker-test:~$ docker run --rm -it ubuntu:16.04 /bin/bash root@ecc3042c5486:/# ls bin dev home lib64 mnt proc run srv tmp var boot etc lib media opt root sbin sys usr root@ecc3042c5486:/# cat /etc/issue Ubuntu 16.04.2 LTS \n \l root@ecc3042c5486:/# uname -a Linux ecc3042c5486 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux root@ecc3042c5486:/#
컨테이너 내부에 들어가기 위해 bash쉘을 실행 키보드 입력을 위해 -it 옵션을 사용
접속을 종료 하면 컨테이너가 자동으로 삭제 되도록 –rm 옵션을 추가합니다.
# apache Container 생성
-p 옵션을 사용하여 외부와 내부 80 포트를 연결 합니다.
–name 옵션을 사용하여 httpd-test 로 컨테이너 name 을 지정 합니다.
test@docker-test:~$ docker run -d -p 80:80 --name httpd-test httpd Unable to find image 'httpd:latest' locally latest: Pulling from library/httpd f2b6b4884fc8: Pull complete b58fe2a5c9f1: Pull complete e797fea70c45: Pull complete 6c7b4723e810: Pull complete 02074013c987: Pull complete a4a11b801d86: Pull complete 70d17a98bee0: Pull complete Digest: sha256:8359424a58cf59f1ea6a1a55e3974d5d569a510ebec0004357cf200adce5f27a Status: Downloaded newer image for httpd:latest a88a9dbfe728a3d9a9ea1c209b6773eb24d7de63a16de97519d2acab5d762650 test@docker-test:~$
컨테이너 확인
test@docker-test:~$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a88a9dbfe728 httpd "httpd-foreground" About a minute ago Up About a minute 0.0.0.0:80->80/tcp httpd-test test@docker-test:~$
접속 확인
컨테이너 정지시 docker stop $Container_id 를 사용합니다.
test@docker-test:~$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a88a9dbfe728 httpd "httpd-foreground" 7 minutes ago Up 6 minutes 0.0.0.0:80->80/tcp httpd-test test@docker-test:~$ docker stop a88a9dbfe728 a88a9dbfe728 test@docker-test:~$
컨테이너 재사용시 docker ps -a 으로 확인후
docker start $Container_id 를 하시면 됩니다.
test@docker-test:~$ docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a88a9dbfe728 httpd "httpd-foreground" 8 minutes ago Exited (0) 18 seconds ago httpd-test test@docker-test:~$ docker start a88a9dbfe728 a88a9dbfe728 test@docker-test:~$
컨테이너 삭제시 docker rm 을 사용합니다.
test@docker-test:~$ docker rm a88a9dbfe728 a88a9dbfe728
docker run 으로 image 에서 만든 컨테이너만 삭제 되며 해당 이미지는 남아 있습니다.
test@docker-test:~$ docker images |grep -i httpd httpd latest e2a1033f4f86 2 hours ago 178MB test@docker-test:~$
# MySQL5.7 Container 생성
test@docker-test:~$ docker run -d -p 3306:3306 -e MYSQL_ALLOW_EMPTY_PASSWORD=true --name mysql mysql:5.7 Unable to find image 'mysql:5.7' locally 5.7: Pulling from library/mysql 693502eb7dfb: Already exists 08d0e9d74b1b: Pull complete e700ebfbe6bc: Pull complete f718f1976629: Pull complete 575a0830e278: Pull complete 8461dfcf361d: Pull complete 349434898dfb: Pull complete 78d351522443: Pull complete 21897ab46952: Pull complete ca6ffbbedc10: Pull complete ba8ff064032b: Pull complete Digest: sha256:6d4b33d189d62afe590ee4b35f92aae31ffa79ccc4d4db8bd3d3b893c8019596 Status: Downloaded newer image for mysql:5.7 f33c70888d81987a40957ea0f65fcf108d6a15248a25c139eebcf60ac6de4474 test@docker-test:~$
Host OS 에서 접속 테스트
test@docker-test:~$ mysql -h127.0.0.1 -uroot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.17 MySQL Community Server (GPL) Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 4 rows in set (0.00 sec) mysql> quit Bye test@docker-test:~$
# mariadb Container
docker search mariadb 명령어로 배포중인 mariadb 컨테이너를 확인 할수 있습니다.
공식 image 의 경우 OFFICIAL [OK] 를 확인 할수 있습니다.
test@ubuntu1604:~$ docker search mariadb NAME DESCRIPTION STARS OFFICIAL AUTOMATED mariadb MariaDB is a community-developed fork of M... 1462 [OK] bitnami/mariadb Bitnami MariaDB Docker Image 40 [OK] paintedfox/mariadb A docker image for running MariaDB 5.5, a ... 29 [OK] toughiq/mariadb-cluster Dockerized Automated MariaDB Galera Cluste... 19 [OK] linuxserver/mariadb A Mariadb container, brought to you by Lin... 18 million12/mariadb MariaDB 10 on CentOS-7 with UTF8 defaults 14 [OK] webhippie/mariadb Docker images for mariadb 10 [OK] colinmollenhour/mariadb-galera-swarm MariaDb w/ Galera Cluster, DNS-based servi... 9 [OK] monitoringartist/zabbix-db-mariadb Docker image of MariaDB optimized for Zabbix 8 [OK] panubo/mariadb-galera MariaDB Galera Cluster 8 [OK] wodby/mariadb-alpine mariadb-alpine 5 [OK] wodby/drupal-mariadb MariaDB for Drupal 4 [OK] tianon/mariadb DEPRECATED; use mariadb:* -- ♪ "I just met... 4 [OK] tutum/mariadb Base docker image to run a MariaDB databas... 3 lsioarmhf/mariadb ARMHF based Linuxserver.io image of mariadb 2 juanluisbaptiste/otrs-mariadb Preconfigured MariaDB database for OTRS 1 [OK] wodby/mariadb 1 [OK] drupaldocker/mariadb MariaDB for Drupal 1 [OK] needo/mariadb 1 [OK] jkleczkowski/mariadb You can change server charset and collatio... 0 [OK] benyoo/mariadb Alpine MariaDb run in docker 0 [OK] centos/mariadb-101-centos7 MariaDB 10.1 SQL Database Server Docker image 0 whatwedo/mariadb 0 [OK] kitpages/mariadb-galera MariaDB with Galera 0 [OK] gjchen/mariadb Alpine Linux with MariaDB configured. 0 [OK] test@ubuntu1604:~$
mariadb 이미지 다운
mariadb:latest 의 경우 마지막 버전을 의미합니다.
test@ubuntu1604:~$ docker pull mariadb:latest latest: Pulling from library/mariadb ad74af05f5a2: Pull complete 0639788facc8: Pull complete de70fa77eb2b: Pull complete 724179e94999: Pull complete 57fbc7ff5cf1: Pull complete 9d5794cf4e5c: Pull complete b29a1331369b: Pull complete 66ad135be9a5: Pull complete bb60a21b125b: Pull complete 8313b6b444b9: Pull complete 5891f0cb9ab8: Pull complete 55b71a694f6c: Pull complete Digest: sha256:8ea33570152349b827d7121b88dc3f44a64e1cc7646cfae01faee4824b9b0007 Status: Downloaded newer image for mariadb:latest test@ubuntu1604:~$
mariadb 컨테이너을 실행 합니다.
port 3306 으로 맵핑 하고 password 를 my-secret-pw 로 지정 하였습니다.
test@ubuntu1604:~$ docker run --name mariadb -p 3306:3306 -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mariadb:latest (MYSQL_ROOT_PASSWORD= mariadb root password 입니다.) test@ubuntu1604:~$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 5e66b8ea5c14 mariadb:latest "docker-entrypoint..." 4 seconds ago Up 4 seconds 0.0.0.0:3306->3306/tcp mariadb c8c1c38656cb sanbsd/pure-ftpd:14.04 "/bin/sh -c '/usr/..." 18 hours ago Up 36 minutes 0.0.0.0:21->21/tcp, 0.0.0.0:20000-20099->20000-20099/tcp ftpd 331d935c6000 ssh-server "/usr/sbin/sshd -D" 18 hours ago Up 36 minutes 0.0.0.0:22222->22/tcp ssh-server
Host 에서 mariadb 접속 테스트
-p 3306:3306 으로 맵핑 되어 있기 때문 -h 127.0.0.1 로 접속 할수 있습니다.
test@ubuntu1604:~$ mysql -h127.0.0.1 -uroot -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 14 Server version: 10.2.7-MariaDB-10.2.7+maria~jessie mariadb.org binary distribution Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> status; -------------- mysql Ver 15.1 Distrib 10.0.29-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2 Connection id: 14 Current database: Current user: root@172.17.0.1 SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server: MariaDB Server version: 10.2.7-MariaDB-10.2.7+maria~jessie mariadb.org binary distribution Protocol version: 10 Connection: 127.0.0.1 via TCP/IP Server characterset: latin1 Db characterset: latin1 Client characterset: utf8 Conn. characterset: utf8 TCP port: 3306 Uptime: 14 min 11 sec Threads: 7 Questions: 48 Slow queries: 0 Opens: 36 Flush tables: 1 Open tables: 30 Queries per second avg: 0.056 -------------- MariaDB [(none)]>
