摘要：操作系統(tǒng)阿里云實(shí)例軟件一創(chuàng)建帶有擴(kuò)展的創(chuàng)建文件在文件寫入創(chuàng)建自定義的鏡像，主要不要漏了最后的，是指定當(dāng)前目錄構(gòu)建鏡像運(yùn)行指令，由于網(wǎng)絡(luò)問題等，需要等比較長(zhǎng)

操作系統(tǒng)：阿里云esc實(shí)例centos7.4
軟件：docker-ce version 18.09.3, docker-compose version 1.23.2

一.創(chuàng)建帶有swoole-redis-pdo_mysql-gd擴(kuò)展的docker image

1.創(chuàng)建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.創(chuàng)建自定義的php鏡像，主要不要漏了最后的 "."，是指定當(dāng)前目錄構(gòu)建鏡像

docker build -t myphp4 .

運(yùn)行指令，由于網(wǎng)絡(luò)問題等，需要等比較長(zhǎng)的時(shí)間，成功后會(huì)出現(xiàn)類似下面的代碼

...
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創(chuàng)建成功！

二.創(chuàng)建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(yùn)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，已開啟nginx mysql redis php 服務(wù)

三.修改各服務(wù)配置文件
1.瀏覽器輸入 127.0.0.1:9998 #此處應(yīng)輸入你的服務(wù)器ip地址，可以看到下圖

2.接下來要修改容器里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 開啟的容器的ip，結(jié)果類似下圖，可以用對(duì)應(yīng)的ip地址進(jìn)行內(nèi)部通訊

3.復(fù)制nginx容器的配置文件出來，并修改替換,使nginx能解析php

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

修改為下列代碼

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;#此處需要填寫你的php容器的docker內(nèi)部通訊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，再執(zhí)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里
docker container stop pnsmr_nginx_1 
docker container start pnsmr_nginx_1 #重啟nginx容器使配置文件生效
vim /var/www/html/index.php #在服務(wù)器本地目錄新建 index.php 文件，輸入
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(cè)試mysql，redis是否生效

vim /var/www/html/redis.php #用于測(cè)試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");
訪問127.0.0.1:9998/redis.php，redis已生效

進(jìn)入mysql容器
docker exec -it pnsmr_mysql_1 bash
進(jìn)入mysql并更改root用戶密碼

創(chuàng)建測(cè)試文件
vim /var/www/html/mysql.php

訪問127.0.0.1：9998/mysql.php，mysql已生效

四.總結(jié)
   雖然環(huán)境是配置成功了，并可以用docker-compose up 指令一鍵生成，但是還要改各容器的配置文件，仍然不夠方便，需要優(yōu)化；另外docker的集群，堆棧功能也沒用上，后面再繼續(xù)學(xué)習(xí).