docker搭建php+nginx+swoole+mysql+redis环境

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:
     - "9998:80"
    volumes:
     - /var/www/html:/usr/share/nginx/html
php-fpm:
    image: "myphp4"
    volumes:
    - /var/www/html:/usr/share/nginx/html
mysql:
    image: "mysql:latest"
    environment:
    - MYSQL_ROOT_PASSWORD=123456
    - MYSQL_DATABASE=test

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;
    #}
}

修改成功后，再执行下列指令

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.