Docker Compose

# Docker Compose 功用 * 本地開發 * 無須手動設定每個container (use script) * 相對 kubernetes 簡單 * 一台機器內管理多個docker # Docker-Compose install ```bash= # v2.23.3 可替換版本 # 方法1 curl -L "https://github.com/docker/compose/releases/download/v2.23.3/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose # 方法2 (如果確定機器版本) curl -L "https://github.com/docker/compose/releases/download/v2.23.3/docker-compose-linux-x86_64" -o /usr/local/bin/docker-compose # 變更檔案權限 chmod +x /usr/local/bin/docker-compose # 確定下載版本 docker-compose --version ``` --- # Docker-Compose test 1. 建立目錄 ```bash= [root@centos-vm3 ~]# mkdir -p test_docker_compose [root@centos-vm3 ~]# cd test_docker_compose/ [root@centos-vm3 test_docker_compose]# ``` 2. 建立檔案 ```b= [root@centos-vm3 test_docker_compose]# vim docker-compose.yml [root@centos-vm3 test_docker_compose]# cat docker-compose.yml version: '3' services: web: image: "centos:httpd" # 必須是有的image檔(docker的也可以) ports: - "8080:80" command: "/usr/sbin/apachectl -DFOREGROUND" ``` 3. 執行 ```dockerfile= [root@centos-vm3 test_docker_compose]# docker-compose up -d [+] Running 2/2 ✔ Network test_docker_compose_default Created 0.1s ✔ Container test_docker_compose-web-1 Started 0.1s ``` 4. 檢查 ```dockerfile= [root@centos-vm3 test_docker_compose]# docker-compose ps NAME IMAGE COMMAND SERVICE CREATED STATUS PORTS test_docker_compose-web-1 xuanlin123/centos:web "/usr/sbin/apachectl…" web About a minute ago Up About a minute 0.0.0.0:8080->80/tcp, :::8080->80/tcp ``` 可以查看IP後連過去看看 5. 關閉 ```dockerfile= [root@centos-vm3 test_docker_compose]# docker-compose down [+] Running 2/2 ✔ Container test_docker_compose-web-1 Removed 10.2s ✔ Network test_docker_compose_default Removed 0.1s # 如果沒在有 docker-compose.yml 檔案的目錄下關閉會報錯 [root@centos-vm3 user]# docker-compose down no configuration file provided: not found ``` :::warning 如果一般使用者無法使用的話加上`sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose` ::: ---