方法一：登陆phpMyAdmin时输入服务器ip地址、用户名、密码

缺点：登陆操作比较繁琐，而且切换服务器时须首先退出当前所登陆的服务器

操作步骤：修改phpMyAdmin目录下的 /libraries/config.default.php

/**
 * allow login to any user entered server in cookie based authentication
 *
 * @global boolean $cfg[‘AllowArbitraryServer’]
 */
$cfg[‘AllowArbitraryServer’] = true;