首先我们用docker-compose.yml打包
version: '3'
services:
wordpress:
image: wordpress
depends_on:
- mysql
environment:
WORDPRESS_DB_HOST: mysql
WORDPRESS_DB_PASSWORD: root
networks:
- my-bridge
mysql:
image: mysql:5.7
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: wordpress
volumes:
- mysql-data:/var/lib/mysql
networks:
- my-bridge
lb:
image: dockercloud/haproxy
links:
- wordpress
ports:
- 8080:80
volumes:
- /var/run/docker.sock:/var/run/docker.sock
volumes:
mysql-data:
networks:
my-bridge:
driver: bridge
在docker-compose.yml文件所在目录运行命令：
docker-composr up -d
这样我们就创建了wordpress,lb,mysql三个容器
扩展wordpress:
docker-compose up --scale wordpress=3 -d
这条命令会再启动两个wordpress容器，使wordpress达到三个，且外部都是监听的8080端口，不会出现端口冲突。
