mysql忘记登陆密码
[*]mysql（mariadb）忘记登陆密码，提示如下
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# mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
2.停止mysql
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# 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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# 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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# systemctl start mariadb
# 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 > update user set password=password('123456') where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4Changed: 4Warnings: 0
MariaDB > flush privileges
-> ;
Query OK, 0 rows affected (0.00 sec)
MariaDB > exit;
Bye
5.已重置密码为123456，测试登录
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# 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)]>
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