一、wordpress安装

  1. [root@docker ~]# mkdir wordpress
  2. [root@docker ~]# cd wordpress
  3. [root@docker ~]# vim docker-compose.yml

  • docker-compose.yml文件内容如下

    1. version: "3"
    2. services:
    3. db:
    4.   image: 10.30.12.55/docker/mysql:5.6
    5.   volumes:
    6.     - /var/lib/mysql:/var/lib/mysql
    7.   #自动重启
    8.   restart: always
    9.   environment:
    10.     #指定MySQL的root账号初始密码
    11.     MYSQL_ROOT_PASSWORD: 123456
    12.     #指定容器启动后要创建的数据库
    13.     MYSQL_DATABASE: wordpress
    14.     #指定容器在启动后要创建的普通用户账号，该账号有远程登录的权限
    15.     MYSQL_USER: tom
    16.     #为用户设置密码
    17.     MYSQL_PASSWORD: 123456
    18. wordpress:
    19.   depends_on:
    20.     - db
    21.   image: 10.30.12.55/docker/wordpress
    22.   ports:
    23.     - "8000:80"
    24.   restart: always
    25.   environment:
    26.     #指定要使用的数据库名
    27.     WORDPRESS_DB_NAME: wordpress
    28.     #指定要MySQL容器的ip和端口
    29.     WORDPRESS_DB_HOST: db:3306
    30.     #指定登录MySQL的账号
    31.     WORDPRESS_DB_USER: tom
    32.     #指定登录MySQL的密码
    33.     WORDPRESS_DB_PASSWORD: 123456

  • 构建并运行项目

[root@docker ~]# docker-compose up -d

二、web负载均衡

  1. 目录结构

image.png

  1. 各个文件内容

  • docker-compose.yml

    web1:
  build: ./httpd
  expose: 
     - 80
web2:
  image: nginx:latest
  volumes:
      - ./nginx1:/usr/share/nginx/html
  expose:
      - 80
web3:
  image: nginx
  volumes:
      - ./nginx2:/usr/share/nginx/html
haproxy:
  image: haproxy
  volumes:
      - ./haproxy/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
  links: 
      - web1
      - web2
      - web3
  ports:
     - "8888:80"
  expose:
      - 80

  • haproxy.cfg

    global
  log 127.0.0.1 local0
  log 127.0.0.1 local1 notice
defaults
  log global
  mode http
  option httplog
  option dontlognull
  timeout connect 5000ms
  timeout client 50000ms
  timeout server 50000ms
  stats uri /status
frontend balancer
  bind 0.0.0.0:80
  mode http
  default_backend web_backends
backend web_backends
  mode http
  option forwardfor
  balance roundrobin
  server weba web1:80 check
  server webb web2:80 check
  server webc web3:80 check
  option httpchk GET /
  http-check expect status 200

  • Dockerfile

    FROM centos
EXPOSE 80
RUN rm -rf /etc/yum.repos.d/*
COPY docker.repo /etc/yum.repos.d/
RUN yum install -y httpd
ADD index.html /var/www/html
CMD ["/usr/sbin/httpd","-D","FOREGROUND"]

  • index.html

test

  1. 执行docker-compose up构建镜像

[root@docker haproxy]# docker-compose up -d

  1. 查看docker进程信息

image.png

  1. 浏览器访问测试

image.png
image.png