今天登录Linux服务器时，连接mysql数据库，使用了平常登录的命令mysql -u -root -p，结果：
百度了半天无果，找来运维同事解决：
使用此命令一举搞定：mysql -h xx.xx.xx.xx(服务器地址) -uroot -p
原来是mysql数据库被设置成了不允许本地连接。只能使用服务器ip地址进行连接了。
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