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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 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
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