MySQL5.7.12新密码登录方式及密码策略
来源:互联网 发布:蝴蝶效应3 知乎 编辑:程序博客网 时间:2024/05/29 09:30
原文链接:http://www.cnblogs.com/jonsea/p/5510219.html
---------------------------------------------------------------------------
松门一枝花补充
最简单的方法:
1、配置文件中把密码策略关了。本文中间部分有介绍。
2、重启服务
3、用mysql生成的临时密码登录。见本文末尾。
4、修改root密码。set password=password('新密码');
5、退出登录,再登录。就可以操作了。
在Centos6.6上安装MySQL5.7.12时,遇到了一个问题
安装后在/root目录下没有发现有.mysql_secret这个文件,所以没有没法按照官方文档上说的那样使用,这里记录下,
解决方式:
首先修改MySQL授权登录方式---(跳过授权验证方式启动MySQL):
[root@test ~]# mysqld_safe --skip-grant-tables &[1] 3401[root@test ~]# 2016-05-19T12:47:56.564385Z mysqld_safe Logging to '/var/log/mysqld.log'.2016-05-19T12:47:56.589376Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
检查MySQL启动情况[root@test ~]# ps -ef | grep mysqlroot 3401 2880 0 20:47 pts/1 00:00:00 /bin/sh /usr/bin/mysqld_safe --skip-grant-tablesmysql 3548 3401 0 20:47 pts/1 00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --skip-grant-tables --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock
这时登录MySQL不再需要验证
[root@test ~]# mysql
成功登录MySQL后:
切换到mysql系统库:mysql> use mysql;修改root账户登录密码:mysql> update user set password=password('') where user='root';ERROR 1054 (42S22): Unknown column 'password' in 'field list'---报错没有password这个数据字段列描述user表mysql> desc user;...| authentication_string | text | YES | | NULL | || password_expired | enum('N','Y') | NO | | N | || password_last_changed | timestamp | YES | | NULL | || password_lifetime | smallint(5) unsigned | YES | | NULL | || account_locked | enum('N','Y') | NO | | N | |+------------------------+-----------------------------------+------+-----+-----------------------+-------+---没发现password列,但是找到这5个跟密码相关的数据字段查询一下相关的密码信息:mysql> select user,host,authentication_string,password_expired from user;+-----------+-----------+-------------------------------------------+------------------+| user | host | authentication_string | password_expired |+-----------+-----------+-------------------------------------------+------------------+| root | localhost | *9AA01F6E2A80A823ACB72CC07337E2911404B5B8 | Y || mysql.sys | localhost | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | N |+-----------+-----------+-------------------------------------------+------------------+---到这里不难发现root账户的密码已过期,还比5.6多出了一个mysql.sys用户修改密码mysql> update user set authentication_string=password('123abc') where user='root';Query OK, 1 row affected (0.00 sec)Rows matched: 1 Changed: 1 Warnings: 0mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)mysql> exit
密码修改成功,测试:
重启MySQL:[root@test ~]# /etc/init.d/mysqld restart登录测试:[root@test ~]# mysql -pEnter password: Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 3Server version: 5.7.12-enterprise-commercial-advanced...mysql> show databases;ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.---报错,需要使用alter user 修改密码
mysql> alter user root@'localhost' identified by 'oracle';ERROR 1819 (HY000): Your password does not satisfy the current policy requirements---报错,密码不满足制定的密码负责度要求
mysql> alter user 'root'@'localhost' identified by 'Abc!123D';Query OK, 0 rows affected (0.01 sec)mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys |+--------------------+4 rows in set (0.00 sec)
关于密码策略
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 (0.02 sec) mysql> show plugins;+----------------------------+----------+--------------------+----------------------+-------------+| Name | Status | Type | Library | License |+----------------------------+----------+--------------------+----------------------+-------------+| binlog | ACTIVE | STORAGE ENGINE | NULL | PROPRIETARY |...| validate_password | ACTIVE | VALIDATE PASSWORD | validate_password.so | PROPRIETARY |+----------------------------+----------+--------------------+----------------------+-------------+---可以通过在配置文件[mysqld]标签中添加 validate_passwor=off ,来关闭密码策略如下:...| validate_password | DISABLED | VALIDATE PASSWORD | validate_password.so | PROPRIETARY |+----------------------------+----------+--------------------+----------------------+-------------+
配置文件位置
[root@master ~]# find / -name my.cnf/etc/my.cnf
总结
1) 安装好mysql后,第一次启动时,root管理密码会在/root/.mysql_secret中随机生成
2) 至5.7后,MySQL的 mysql.user 表中的密码字段由之前的 password 改为 authentication_string
3) 使用--skip-grant-tables 参数启动,跳过MySQL的授权验证,--skip-networking参数,跳过远程登录
4) 修改MySQL密码方式:
法1:update user set authentication_string=password('123abc') where user='root';
法2:set password=password('newpassword');
法3:alter user root@'localhost' identified by 'oracle';
法4:在shell下使用MySQL工具:mysqladmin -uroot -poldpassword pasword "newpassword"
5) 关于MySQL密码策略:
后记
经过一段时间后,发现mysql初始密码原来被记录到了日志文件中
查找日志位置
[root@test /var/lib/mysql]# ps -ef | grep mysqlroot 5604 1 0 22:40 pts/1 00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --socket=/var/lib/mysql/mysql.sock --pid-file=/var/run/mysqld/mysqld.pid --basedir=/usr --user=mysqlmysql 5802 5604 5 22:40 pts/1 00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sockroot 5837 2880 0 22:40 pts/1 00:00:00 grep --color mysql
藏在日志文件中的临时密码[root@test /var/lib/mysql]# grep "A temporary password" /var/log/mysqld.log 2016-05-17T16:46:53.059632Z 1 [Note] A temporary password is generated for root@localhost: +wGVA#to(4tu
- MySQL5.7.12新密码登录方式及密码策略
- MySQL5.7.12新密码登录方式及密码策略
- MySQL5.7.12新密码登录方式及密码策略
- MySQL5.7.12新密码登录方式及密码策略
- mysql5.7新密码登录方式及密码策略
- CentOS 7 安装及卸载、重置登录密码 MySql5.7
- centos6.8 mysql5.7 安装、配置、关闭密码策略、远程登录
- mysql5.7 修改root密码登录
- mysql5.7第一次登录修改root密码
- mysql5.7修改密码与远程登录
- 如何修改MSDE的登录方式及SA密码[原创]
- SSH免密码登录方式
- mysql登录密码策略更改设置
- 存储登录密码及账号
- 关于mySql5.7.10密码过期及应对
- MySQL5.7安装及新建密码
- MySQL5.6 以上版本 密码安装策略问题
- 关于 mysql5 改密码后不能登录问题的解答
- 图论模版
- C++三大特性 -- 继承
- LINUX内核内存屏障
- 为安卓项目添加依赖库的一个注意事项
- MFC
- MySQL5.7.12新密码登录方式及密码策略
- 运维人员的三种层次:看看你是背锅侠,还是闪修侠?
- 2017开学训练第九周周末总结
- 3 OF 100DAYS
- interrupte()方法详解
- 文章标题
- android studio升级到3.0之后的一些配置变化
- Java IM环信服务端集成之用户注册(三)
- 反转部分单向链表