docker搭建php+nginx+swoole+mysql+redis环境的方法

操作系统：阿里云esc实例centos7.4

软件：docker-ce version 18.09.3, docker-compose version 1.23.2

一.创建带有swoole-redis-pdo_mysql-gd扩展的docker image

1.创建dockerfile文件

vim dockerfile

2.在dockerfile文件写入

From php:7.1-fpm
RUN apt-get update && apt-get install -y \
  libfreetype6-dev \
  libjpeg62-turbo-dev \
  libpng-dev \
&& docker-php-ext-install -j$(nproc) iconv \
&& docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
&& docker-php-ext-install -j$(nproc) gd \
&& docker-php-ext-configure pdo_mysql \
&& docker-php-ext-install pdo_mysql \
&& pecl install redis-4.3.0 \
&& pecl install swoole \
&& docker-php-ext-enable redis swoole

3.创建自定义的php镜像，主要不要漏了最后的 '.'，是指定当前目录构建镜像

docker build -t myphp4 .

运行指令，由于网络问题等，需要等比较长的时间，成功后会出现类似下面的代码

...
Build process completed successfully
Installing '/usr/local/include/php/ext/swoole/config.h'
Installing '/usr/local/lib/php/extensions/no-debug-non-zts-20160303/swoole.so'
install ok: channel://pecl.php.net/swoole-4.3.1
configuration option "php_ini" is not set to php.ini location
You should add "extension=swoole.so" to php.ini
Removing intermediate container ad1420f7554f
---> 2f2f332d73ce
Successfully built 2f2f332d73ce
Successfully tagged myphp4:latest

至此docker 的自定义myphp4 image创建成功！

二.创建docker-compose.yml文件

mkdir pnsmr
cd pnsmr
vim docker-compose.yml

写入下面代码

version: '3.0'
services:
nginx:
  image: "nginx:latest"
  ports:
   - "10000:80"
  volumes:
   - /var/www/html:/usr/share/nginx/html
php-fpm:
  image: "myphp4"
  volumes:
  - /var/www/html:/usr/share/nginx/html
mysql:
  image: "mysql:latest"
redis:
  image: "redis:4.0"

运行指令

docker-compose up -d

成功可以看到

WARNING: The Docker Engine you're using is running in swarm mode.

Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.

To deploy your application across the swarm, use `docker stack deploy`.

Creating network "pnsmr_default" with the default driver
Creating pnsmr_php-fpm_1 ... done
Creating pnsmr_redis_1 ... done
Creating pnsmr_mysql_1 ... done
Creating pnsmr_nginx_1 ... done

至此，已开启nginx mysql redis php 服务

三.修改各服务配置文件

1.浏览器输入 127.0.0.1:9998 #此处应输入你的服务器ip地址，可以看到下图

2.接下来要修改容器里nginx的配置文件，先使用指令查看各容器的docker IP地址

docker inspect -f '{{.Name}} - {{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker ps -aq)

此指令可以查看所有用docker-compose 开启的容器的ip，结果类似下图，可以用对应的ip地址进行内部通讯

3.复制nginx容器的配置文件出来，并修改替换,使nginx能解析php

docker cp pnsmr_nginx_1:/etc/nginx/conf.d/default.conf nginx.conf
vim nginx.conf

修改为下列代码

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.html index.htm;
  }

  #error_page 404       /404.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
  #
  location ~ \.php$ {
    root      html;
    fastcgi_pass  172.24.0.3:9000;#此处需要填写你的php容器的docker内部通讯ip
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html/$fastcgi_script_name;
    include    fastcgi_params;
  }

  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  #  deny all;
  #}
}
docker cp nginx.conf pnsmr_nginx_1:/etc/nginx/conf.d/default.conf #将修改好的配置文件拷贝到容器里
docker container stop pnsmr_nginx_1
docker container start pnsmr_nginx_1 #重启nginx容器使配置文件生效
vim /var/www/html/index.php #在服务器本地目录新建 index.php 文件，输入<?php phpinfo(); 并保存
vim /var/www/html/index.html #在服务器本地目录新建 index.html 文件，输出helloworld

访问127.0.0.1:9998, html文件解析正常

访问127.0.0.1:9998/index.php，php文件解析正常

4.测试mysql，redis是否生效

vim /var/www/html/redis.php #用于测试redis是否配置成功
<?php
$redis = new Redis();
$redis->connect("172.24.0.4",6379);
$redis->set('test','this is a test for redis');
echo $redis->get('test');

访问127.0.0.1:9998/redis.php，redis已生效

进入mysql容器

docker exec -it pnsmr_mysql_1 bash

进入mysql并更改root用户密码

创建测试文件

vim /var/www/html/mysql.php
<?php
$pdo = new PDO('mysql:host=172.24.0.2;dbname=mysql;port=3306','root','root123');
var_dump($pdo);

访问127.0.0.1：9998/mysql.php，mysql已生效

四.总结

虽然环境是配置成功了，并可以用docker-compose up 指令一键生成，但是还要改各容器的配置文件，仍然不够方便，需要优化；另外docker的集群，堆栈功能也没用上，后面再继续学习.

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