Linux下忘记mysql密码
本想登录mysql数库, 突然记不得mysql下root用户的密码了。
下面是处理过程
1:关闭mysql(一定不要用kill -9 pid或pkill mysql之类的命令, 用这种命令尽管会强制关闭数据库, 但使得数据库有很多的碎片,容易使得数据crash(我图方便就用了两次,尽管我知道不能用pkill,数据库就crash了。最好用service mysql stop关闭它)
2:测试是否真正关闭
3:开启mysql用--skip-grant-tables 项,即可不提示输入密码
4:mysql -u root -p 通过空密码进入mysql,
5:选择mysql库下的user表,修改root用户对应当密码
6:flush privileges 刷新缓冲区
7:退出mysql,重新登陆测试(此时密码已经生效,不需要重启mysql)
以下是我的处理过程!
[root@localhost ~]# service mysql stop ##究竟是mysql还是mysqld要看你在/etc/rc.d/init.d下到底是mysql还是mysqld [root@localhost ~]# netstat -antl | grep 3306 [root@localhost ~]# /usr/local/mysql/bin/mysqld_safe --skip-grant-tables --user=mysql & [1] 3701 [root@localhost ~]# Starting mysqld daemon with databases from /usr/local/mysql/data
[root@localhost ~]# netstat -antl | grep 3306 tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN [root@localhost ~]# mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.0.83 MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> update user set password=password('root') where user='root'; ERROR 1046 (3D000): No database selected mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A
Database changed mysql> update user set password=password('root') where user='root'; Query OK, 3 rows affected (0.00 sec) Rows matched: 3 Changed: 3 Warnings: 0
mysql> flush privileges; Query OK, 0 rows affected (0.00 sec)
mysql> exit Bye [root@localhost ~]# mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.0.83 MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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