mysql忘记登陆密码

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• mysql（mariadb）忘记登陆密码，提示如下
  
  
  

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[iyunv@localhost ~]# mysql -uroot -p Enter password: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

2.停止mysql

1	[iyunv@localhost ~]# systemctl stop mariadb

3.使用--skip-grant-tables连接mysql，此时mysql不能进行授权操作，可重置密码

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[iyunv@localhost ~]# mysqld_safe --skip-grant-tables 161103 14:52:25 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'. 161103 14:52:25 mysqld_safe A mysqld process already exists

4.开启mysql并直接进入

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[iyunv@localhost ~]# systemctl start mariadb [iyunv@localhost ~]# mysql Welcome to the MariaDB monitor.  Commands end with ; or \g. Your MariaDB connection id is 2 Server version: 5.5.50-MariaDB MariaDB Server Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> 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 MariaDB [mysql]> update user set password=password('123456') where user='root'; Query OK, 4 rows affected (0.00 sec) Rows matched: 4  Changed: 4  Warnings: 0 MariaDB [mysql]> flush privileges     -> ; Query OK, 0 rows affected (0.00 sec) MariaDB [mysql]> exit; Bye

5.已重置密码为123456，测试登录

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[iyunv@localhost ~]# mysql -uroot -p Enter password: Welcome to the MariaDB monitor.  Commands end with ; or \g. Your MariaDB connection id is 3 Server version: 5.5.50-MariaDB MariaDB Server Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]>