- 操作系统：
[[email protected] ~]# cat /etc/redhat-release CentOS Linux release 7.1.1503
- mysql 版本5.7.9
mysql> select version() -> ; +-----------+ | version() | +-----------+ | 5.7.9 | +-----------+ 1 row in set (0.00 sec) - 安装mysql的yum repo 源：
rpm -ivh http://repo.mysql.com//mysql57-community-release-el7-7.noarch.rpm
- 安装mysql
yum install mysql-community-server yum install mysql-community-client
- 修改mysql 配置文件跳过密码验证
[mysqld] skip-grant-tables skip-networking
- 启动mysql：
systemctl start mysqld
- 匿名登录mysql 设置root密码：
[[email protected] ~]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.7.9 MySQL Community Server (GPL) Copyright (c) 2000, 2015, 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> update mysql.user set PASSWORD=PASSWORD(‘test‘) where user=‘root‘ and host=‘localhost‘; ERROR 1054 (42S22): Unknown column ‘PASSWORD‘ in ‘field list‘ mysql> ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘test‘ ; ERROR 1131 (42000): You are using MySQL as an anonymous user and anonymous users are not allowed to change passwords mysql> update mysql.user set authentication_string=PASSWORD(‘test‘) where user=‘root‘ and host=‘localhost‘; Query OK, 1 row affected, 1 warning (0.07 sec) Rows matched: 1 Changed: 1 Warnings: 1 mysql> flush privileges; Query OK, 0 rows affected (0.06 sec) mysql> exit; Bye
- 取消跳过密码认证：
[mysqld] #skip-grant-tables #skip-networking
- 重启mysql：
systemctl restart mysqld
- 必须使用alter user 重置密码：
mysql> show databases; ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
- 重新设置密码：
mysql> ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘********‘
- 密码需要复杂度要求：
mysql> SHOW VARIABLES LIKE ‘validate_password%‘; +--------------------------------------+--------+ | Variable_name | Value | +--------------------------------------+--------+ | validate_password_dictionary_file | | | validate_password_length | 8 | | validate_password_mixed_case_count | 1 | | validate_password_number_count | 1 | | validate_password_policy | MEDIUM | | validate_password_special_char_count | 1 | +--------------------------------------+--------+ 6 rows in set (0.00 sec)
时间： 2024-09-30 15:41:07