本文档以实战的形式介绍破解 MariaDB5.5 数据库的 root 登录密码
忘记 root 登录密码
[root@localhost ~]# mysql -uroot -p123
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
查找并运行 mysqld_safe 程序绕开 MariaDB5.5 数据库密码验证
[root@localhost ~]# find / -name mysqld_safe
/usr/bin/mysqld_safe
[root@localhost ~]# /usr/bin/mysqld_safe --skip-grant-tables &
直接使用 mysql 命令登录 MariaDB5.5 数据库并修改 root 登录密码
[root@localhost ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or g.
Your MariaDB connection id is 1
Server version: 5.5.52-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)]> show databases; |
|---|
| Database |
| information_schema |
| mysql |
| performance_schema |
3 rows in set (0.00 sec)
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("New-password") WHERE user='root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings: 0
MariaDB [mysql]> flush privileges;
Query OK, 0 rows affected (0.00 sec)
MariaDB [mysql]> exit
Bye
使用新密码 New-password 登录 MariaDB5.5 数据库
[root@localhost ~]# ps au
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 3986 0.0 0.1 115380 2084 tty1 Ss+ 19:53 0:02 -bash
root 22483 0.0 0.1 115384 2076 pts/0 Ss 21:54 0:00 -bash
root 22910 0.0 0.0 113252 1592 pts/0 S 21:59 0:00 /bin/sh /usr/bin/mysqld_safe --ski
mysql 23066 0.3 4.6 839268 86192 pts/0 Sl 21:59 0:00 /usr/libexec/mysqld --basedir=/usr
root 23091 0.0 0.0 151056 1824 pts/0 R+ 22:00 0:00 ps au
[root@localhost ~]# kill -9 22910
[root@localhost ~]# mysql -uroot -pNew-password
Welcome to the MariaDB monitor. Commands end with ; or g.
Your MariaDB connection id is 2
Server version: 5.5.52-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)]>
| MariaDB [(none)]> show databases; |
|---|
| Database |
| information_schema |
| mysql |
| performance_schema |
3 rows in set (0.00 sec)
MariaDB [(none)]> exit
Bye
[1]+ Killed /usr/bin/mysqld_safe --skip-grant-tables
使用其他密码不能登录 MariaDB5.5 数据库
[root@localhost ~]# mysql -uroot -pNew-passwordd
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[root@localhost ~]# rpm -qa mariadb
mariadb-5.5.52-1.el7.x86_64
总结
以上就是破解 MariaDB5.5 数据库的 root 登录密码的实战方法，希望能帮助到大家。