MySQL忘記root密碼不重啟mysqld的方法 1、首先得有一個可以擁有修改權(quán)限的mysql數(shù)據(jù)庫賬號，當(dāng)前的mysql實例賬號（較低權(quán)限的賬號，比如可以修改zabbix數(shù)據(jù)庫）或者其他相同版本實例的賬號。把 data/mysql 目錄下面的user表相關(guān)的文件復(fù)制到 data/zabbix 目錄下面。 [root@restoredb mysql]# cp mysql/user.* test/ [root@restoredb mysql]# chown mysql.mysql test/user.* 2、使用另一個較低權(quán)限的賬號鏈接數(shù)據(jù)庫，設(shè)置 zabbix 數(shù)據(jù)庫中的 user 存儲的密碼數(shù)據(jù)。 [root@restoredb mysql]# mysql -uzabbix -pzabbixpasswd -A? mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1180 Server version: 5.7.22-log MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> use zabbix; Database changed mysql> update user set authentication_string=password('zabbixpasswd') where user='root'; Query OK, 2 rows affected, 1 warning (0.04 sec) Rows matched: 2 Changed: 2 Warnings: 1 3、把修改后的user.MYD和user.MYI復(fù)制到mysql目錄下，記得備份之前的文件。 mv mysql/user.MYD mysql/user.MYD.bak mv mysql/user.MYI mysql/user.MYI.bak cp zabbix/user.MY* mysql/ chown mysql.mysql mysql/user.* 4、kill -SIGHUP? [root@restoredb mysql]# pgrep -n mysql 31650 [root@restoredb mysql]# [root@restoredb mysql]# kill -SIGHUP 31650 5、測試 [root@restoredb mysql]# mysql -uroot -pzabbixpasswd -A? mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1190 Server version: 5.7.22-log MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>?

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轉(zhuǎn)載于:https://www.cnblogs.com/liang545621/p/9400206.html

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