docker-compose搭建nginx+php+mysql

安装Docker Compose之前应先确保系统已经安装了Docker

安装Docker Compose

1.下载Docker Compose

    sudo curl -L "https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

2.添加可执行权限

    sudo chmod +x /usr/local/bin/docker-compose

3.测试

    $ docker-compose --version
    docker-compose version 1.22.0, build 1719ceb

搭建nginx+php+mysql

系统环境

CentOS minimal 7.2.1511
Docker CE 18.06.1-ce

docker镜像版本：
php 7.2.11-fpm
mysql 8.0
nginx 1.15

构建目录结构

www
├── docker-compose.yml
├── html
│   └── index.php
├── mysql
├── nginx
│   └── default.conf
└── php
    └── Dockerfile

docker-compose.yml

version: ‘3.7’
services:
  nginx:
    image: nginx
    ports:
      - "80:80"
    depends_on:
      - php
    volumes:
      - "$PWD/nginx/default.conf:/etc/nginx/conf.d/default.conf"
      - "$PWD/html:/usr/share/nginx/html"
    networks:
      - app_net
    container_name: "compose-nginx"
  php:
    build: ./php
    image: php:fpm
    ports:
      - "9000:9000"
    volumes:
      - "$PWD/html:/var/www/html"
    networks:
      - app_net
    container_name: "compose-php"
  mysql:
    image: mysql
    ports:
      - "3306:3306"
    environment:
      - MYSQL_ROOT_PASSWORD=123456
    networks:
      app_net:
        ipv4_address: 10.10.10.1
    container_name: "compose-mysql"
networks:
  app_net:
    driver: bridge
    ipam:
      config:
        - subnet: 10.10.0.0/16

html/index.php

<?php
phpinfo();

nginx/default.conf

server {
    listen       80;
    server_name  localhost;
      
    #charset koi8-r;
    #access_log  /var/log/nginx/host.access.log  main;
        
    location / {
        root   /usr/share/nginx/html;
        index  index.php index.html index.htm;
    }
    
    error_page  404              /404.html;
    location = /40x.html {
        root   /usr/share/nginx/html;
    }
     
    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
 
    # proxy the PHP scripts to Apache listening on 127.0.0.1:80
    #
    #location ~ \.php$ {
    #    proxy_pass   http://127.0.0.1;
    #}
 
    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    # PHP 脚本请求全部转发到 FastCGI处理. 使用FastCGI协议默认配置.
    # Fastcgi服务器和程序(PHP,Python)沟通的协议.
    location ~ \.php$ {
        # php容器的网站根目录
        root           /var/www/html/;
        # 设置监听端口
        fastcgi_pass   php:9000;
        fastcgi_index  index.php;
        # 设置脚本文件请求的路径
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        # 引入fastcgi的配置文件
        include        fastcgi_params;
    }
  
    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    location ~ /\.ht {
        deny  all;
    }
}

因为nginx镜像里没有fastcgi.conf文件，就需要引入fastcgi_params文件并配置SCRIPT_FILENAME参数

php/Dockerfile

FROM php:fpm
              
RUN apt-get update \
    && apt-get install -y iputils-ping \
    && docker-php-ext-install mysqli && docker-php-ext-enable mysqli

启动服务

# www目录下执行
docker-compose up -d

测试

浏览器访问http://localhost，会出现php的介绍文档

如果在虚拟机里搭建的项目，localhost要改成虚拟机的IP地址

遇到的问题

在docker-compose.yml文件所在目录执行

$ docker-compose up -d

报错：

ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?
If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.

解决方法是把当前用户添加到docker用户组，然后重新登录即可

sudo usermod -aG docker ${USER}