Docker Compose

Docker Compose

• 上线：docker compose up -d，-d 是以后台方式
• 下线：docker compose down，具体参数可以用 --help 查看
• 启动：docker compose start x1 x2 x3：x1，x2，x3 是在文件 compose.yaml 中配置的应用
• 停止：docker compose stop x1 x2 x3
• 扩容：docker compose scale x2=3，让 x2 的实例启动 3 份

命令式安装

# 创建网络
$ docker network create blog
# 启动mysql
$ docker run -d -p 3306:3306 \
-e MYSQL_ROOT_PASSWORD=123456 \
-e MYSQL_DATABASE=wordpress \
-v mysql-data:/var/lib/mysql \
-v /app/myconf:/etc/mysql/conf.d \
--restart always --name mysql \
--network blog \
mysql:latest
# 启动wordpress
$ docker run -d -p 8080:80 \
-e WORDPRESS_DB_HOST=mysql \
-e WORDPRESS_DB_USER=root \
-e WORDPRESS_DB_PASSWORD=123456 \
-e WORDPRESS_DB_NAME=wordpress \
-v wordpress:/var/www/html \
--restart always --name wordpress-app \
--network blog \
wordpress:latest

compose.yaml

• 官方文档

name: myblog
services:
    mysql:
        container_name: mysql # 不加这个就会使用服务名
        image: mysql:latest
        ports:
            - "3306:3306"
        environment:
            - MYSQL_ROOT_PASSWORD=123456
            - MYSQL_DATABASE=wordpress
        volumes:
            - mysql-data:/var/lib/mysql # 卷映射
            - /app/myconf:/etc/mysql/conf.d # 目录挂载
        restart: always
        networks:
            # 自定义网络
            - blog
 
    wordpress:
        image: wordpress
        ports:
            - "8080:80"
        environment:
            WORDPRESS_DB_HOST: mysql
            WORDPRESS_DB_USER: root
            WORDPRESS_DB_PASSWORD: 123456
            WORDPRESS_DB_NAME: wordpress
        volumes:
            - wordpress:/var/www/html
        restart: always
        networks:
            - blog
        depends_on:
            # 依赖于 mysql
            - mysql
 
volumes:
    # 卷映射
    mysql-data:
    wordpress:
 
 
networks:
    # 网络
    blog:

在文件所在的目录下，使用 docker compose up -d 在后台启动：

root@spring:~# docker compose up -d
[+] Running 5/5
 ✔ Network myblog_blog           Created                                                                              0.2s 
 ✔ Volume "myblog_mysql-data"    Created                                                                              0.0s 
 ✔ Volume "myblog_wordpress"     Created                                                                              0.0s 
 ✔ Container mysql               Started                                                                              1.9s 
 ✔ Container myblog-wordpress-1  Started                                                                              2.1s 
root@spring:~# 

或者用 docker compose -f compose.yaml up -d 来指定启动文件。