我们使用MYSQL的时候有可能由于种种原因忘记ROOTpassword，假设是那样数据库可能就废掉了。可是今天给大家分享下找回ROOTpassword的方法或者说是在不知道rootpassword的情况下改动ROOTpassword，可是还是建议大家对rootpassword慎重保管，防止一些不必要的麻烦

找回管理员password：

[root@localhost~]# service mysqld stop

Shutting down MySQL....[确定]

[root@localhost~]# vim /etc/init.d/mysqld

大约在283行：

$bindir/mysqld_safe --datadir="$datadir"--pid-file="$mysqld_pid_file_path" $other_args >/dev/null2>&1 &

wait_for_pid created "$!""$mysqld_pid_file_path"; return_value=$?

更改为

$bindir/mysqld_safe --skip-grant-tables --skip-networking

--datadir="$datadir"--pid-file="$mysqld_pid_file_path" $other_args >/dev/null2>&1 &

wait_for_pid created "$!""$mysqld_pid_file_path"; return_value=$?

保存退出

mysql> use mysql

Readingtable information for completion of table and column names

You canturn off this feature to get a quicker startup with -A

Databasechanged

mysql> select user,host,password from user;

+---------+-----------------------+-------------------------------------------+

|user    | host                  | password                                  |

+---------+-----------------------+-------------------------------------------+

|root    | localhost             |*4941369BD46398A2BDEEC85411065D7137D4EA0F |

|root    | localhost.localdomain |*4941369BD46398A2BDEEC85411065D7137D4EA0F |

|root    | 127.0.0.1             |*4941369BD46398A2BDEEC85411065D7137D4EA0F |

|tianke  | %                     |*A399693A49F7EC7C548D0FC376FA52AD293A552F |

|tianke1 | %                     |*EEAC51414F1AE247D67F47A875BDB134CF39986C |

+---------+-----------------------+-------------------------------------------+

5 rowsin set (0.01 sec)

改动rootpassword

mysql> update user setpassword=password('123456')  whereuser='root';

QueryOK, 3 rows affected (0.00 sec)

Rowsmatched: 3  Changed: 3  Warnings: 0

然后将服务再次停掉，然后再将掺数改回重新启动mysql就可以。