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

摘要：操作系统阿里云实例软件一创建带有扩展的创建文件在文件写入创建自定义的镜像，主要不要漏了最后的，是指定当前目录构建镜像运行指令，由于网络问题等，需要等比较长

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
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
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

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.