在Debian 9系统里安装nginx + php7-fpm + MariaDB

环境：Debian 9.4，nginx 1.10.3，php7.0.27, MariaDB 10.1.26

过程：

1. apt update # 更新软件源
2. apt upgrade # 更新软件版本
3. apt autoremove # 自动删除一些“遗留”的不必要软件
4. apt install nginx # 安装 nginx
5. apt install php-fpm php-gd php-mysql php-mbstring php-curl php-xml # 安装 php 及相关组件

6. 编辑默认的nginx站点配置文件/etc/nginx/sites-enabled/default，添加 index.php 类型的默认首页文件，注释掉ipv6地址的监听及启用php

        # Add index.php to the list if you are using PHP
        index index.php index.html index.htm index.nginx-debian.html;
   
        server_name _;
   
        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
        }
   
        # pass PHP scripts to FastCGI server
        #
        location ~ \.php$ {
                include snippets/fastcgi-php.conf;
        #
        #       # With php-fpm (or other unix sockets):
                fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
        #       # With php-cgi (or other tcp sockets):
        #       fastcgi_pass 127.0.0.1:9000;
        }

7. systemctl restart nginx # 重启 nginx 服务，以让更改生效
8. apt install mariadb-server # 安装 MariaDB （mysql）数据库服务端
9. 通过 mysql 命令行，创建一个新的mysql用户
   CREATE USER 'idbadm'@'localhost' IDENTIFIED BY 'meizi36829';
   GRANT ALL PRIVILEGES ON . TO 'idbadm'@'localhost' WITH GRANT OPTION;
   FLUSH PRIVILEGES;
10. 上传或下载一个phpmyadmin，用新建的mysql用户名和密码登录，测试正常