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[root@localhost ~]# mysql -uroot -p123 忘记 root 登录密码
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
[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
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