mysql 5.7 设置root密码方法
2016-09-03 20:16
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摘要:最新版的mysql 5.7与旧版的mysql重新设置root用户密码的方法不一样,
mysql5.7 设置root密码方法:
update mysql.user set authentication_string=PASSWORD('****') where user='root' and host='localhost'。
操作系统:
mysql 版本5.7.9
安装mysql的yum repo 源:
mysql5.7 设置root密码方法:
update mysql.user set authentication_string=PASSWORD('****') where user='root' and host='localhost'。
操作系统:
[root@localhost ~]# 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[/code]
安装mysqlyum 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:[root@localhost ~]# 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)
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql> set password=password('xxxx');
Query OK, 0 rows affected (0.00 sec)
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