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CentOS6下安装mysql后,重置root密码方法_MySQL

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Release: 2016-06-01 13:18:52
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CentOS6CentOS

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本人在CentOS6.4上安装万mysql后,无法通过root进入,因为安装的时候,并没有设置root密码,似乎有个初始随机密码,但是不记得了,太麻烦,直接重置root密码。

使用rpm包安装完mysql后,按照一下步骤重置root密码:

启动mysql:
#/etc/init.d/mysql start


启动成功后查看mysql进程信息,获取mysqld_safe的安装目录(非常关键)
#ps -ef | grep -i mysql
root 3466 1 0 01:45 pts/1 00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/BSC.TEST.pid
mysql 3569 3466 16 01:45 pts/1 00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/BSC.TEST.err --pid-file=/var/lib/mysql/BSC.TEST.pid
root 3597 3105 0 01:45 pts/1 00:00:00 grep -i mysql

可以看到mysqld_safe的安装位置(上面标蓝色部分):/usr/bin/
接着执行一下命令停止mysql:
/etc/init.d/mysql stop

以安全方式启动mysql:
#/usr/bin/mysqld_safe --skip-grant-tables >/dev/null 2>&1 &

稍等5秒钟,然后执行以下语句:
#/usr/bin/mysql -u root mysql
注意:mysql与mysql_safe目录一样,都是:/usr/bin/下,这个是通过“ps -ef | grep -i mysql”命令得到的。

出现“mysql>”提示符后输入:
mysql> update user set password = Password('root') where User = 'root';
回车后执行(刷新MySQL系统权限相关的表):
mysql> flush privileges;
再执行exit退出:
mysql> exit;

退出后,使用以下命令登陆mysql,试试是否成功:

#mysql -u root -p

按提示输入密码:root

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