[root@iZ235wguph3Z www]# mysql -u root Welcome to the MySQL monitor. Commands end with ; or /g. Your MySQL connection id is 295 Server version: 5.0.56-log Source distribution Copyright (c) 2000, 2017, 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. 重置密码：
mysql> update user set password=password('123456') where User='root'; ERROR 1046 (3D000): No database selected mysql> use mysql; Database changed mysql> update user set password=password('123456') where User='root'; Query OK, 3 rows affected (0.00 sec) Rows matched: 3 Changed: 3 Warnings: 0 mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> exit 3.到 my.cnf 中删除 skip-grant-tables 选项，然后重启MySQL服务。
