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

操做系統：阿里雲esc實例centos7.4
軟件：docker-ce version 18.09.3, docker-compose version 1.23.2

一.建立帶有swoole-redis-pdo_mysql-gd擴展的docker image

1.建立dockerfile文件

vim dockerfile

2.在dockerfile文件寫入

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.建立自定義的php鏡像，主要不要漏了最後的 '.'，是指定當前目錄構建鏡像

docker build -t myphp4 .

運行指令，因爲網絡問題等，須要等比較長的時間，成功後會出現相似下面的代碼

...
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 的自定義myphp4 image建立成功！

二.建立docker-compose.yml文件

mkdir pnsmr
cd pnsmr
vim docker-compose.yml

寫入下面代碼

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"

運行指令

docker-compose up -d

成功能夠看到

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，已開啓nginx mysql redis php 服務

三.修改各服務配置文件
1.瀏覽器輸入 127.0.0.1:9998 #此處應輸入你的服務器ip地址，能夠看到下圖

2.接下來要修改容器裏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)
此指令能夠查看全部用docker-compose 開啓的容器的ip，結果相似下圖，能夠用對應的ip地址進行內部通信

3.複製nginx容器的配置文件出來，並修改替換,使nginx能解析php

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

修改成下列代碼

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;#此處須要填寫你的php容器的docker內部通信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;
    #}
}

修改爲功後，再執行下列指令

docker cp nginx.conf pnsmr_nginx_1:/etc/nginx/conf.d/default.conf #將修改好的配置文件拷貝到容器裏
docker container stop pnsmr_nginx_1 
docker container start pnsmr_nginx_1 #重啓nginx容器使配置文件生效
vim /var/www/html/index.php #在服務器本地目錄新建 index.php 文件，輸入<?php phpinfo(); 並保存
vim /var/www/html/index.html #在服務器本地目錄新建 index.html 文件，輸出helloworld

訪問127.0.0.1:9998, html文件解析正常

訪問127.0.0.1:9998/index.php，php文件解析正常

4.測試mysql，redis是否生效

vim /var/www/html/redis.php #用於測試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');

訪問127.0.0.1:9998/redis.php，redis已生效

進入mysql容器

docker exec -it pnsmr_mysql_1 bash

進入mysql並更改root用戶密碼

建立測試文件

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);

訪問127.0.0.1：9998/mysql.php，mysql已生效

四.總結 雖然環境是配置成功了，並能夠用docker-compose up 指令一鍵生成，可是還要改各容器的配置文件，仍然不夠方便，須要優化；另外docker的集羣，堆棧功能也沒用上，後面再繼續學習.