这篇文章主要介绍了MySQL如何进行密码管理,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
1. mysql安装后默认没有密码,初始化安装后默认密码登录,需要马上修改root密码。
[root@mysql ~]# cat /root/.mysql_secret
--查看root账号密码
# The random password set for the root user at
Tue Dec 13 18:59:06 2016 (local time): 7MhtyX3aZEl9OUf8
[root@mysql ~]# mysql -uroot -p -- 登录mysql
Enter password:
--(此处复制粘贴
7MhtyX3aZEl9OUf8)
Welcome to the MySQL monitor. Commands end
with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.25
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.
说明: 出现mysql>
表示一切顺利成功。
2. 修改密码
mysql> SET PASSWORD = PASSWORD('123456');
--设置密码为123456
[root@mysql etc]# mysql -uroot -p123456
--修改密码后,登录
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 39
Server version: 5.6.25 MySQL Community Server
(GPL)
mysql> --登录成功
3. 忘记mysql数据库root的密码后,如何修改密码。
[root@mysql etc]# service mysql stop --停止mysql进程
Shutting down MySQL.... SUCCESS!
[root@mysql etc]# mysqld_safe
--skip-grant-tables& --启动mysql时不启动grant-tables,授权表。执行后出现下面画面,另起一个新会话。
[1] 3574
[root@mysql etc]# 161215 06:13:53 mysqld_safe
Logging to '/var/lib/mysql/mysql.err'.
161215 06:13:53 mysqld_safe Starting mysqld
daemon with databases from /var/lib/mysql
[root@mysql ~]# ps -ef|grep mysql --查看mysql进程是否起来
root 3467 3440
0 05:29 pts/2 00:00:00 mysql -uandy -px xx
root 3574 2845
0 06:13 pts/0 00:00:00 /bin/sh /usr/bin/mysqld_safe
--skip-grant-tables
mysql 3677 3574
2 06:13 pts/0 00:00:00 /usr/sbin/mysqld --basedir=/usr
--datadir=/var/lib/mysql --plugin-
mysql> UPDATE user SET
password=PASSWORD('cccccc') WHERE user='root'; --更改root密码
Query OK, 4 rows affected (0.04 sec)
Rows matched: 4 Changed: 4 Warnings:
0
mysql> FLUSH PRIVILEGES; --权限更新
Query OK, 0 rows affected (0.00 sec)
[root@mysql ~]# mysql -uroot -p123456
--使用旧密码登录,发现不行,说明密码已经更新
Warning: Using a password on the command line
interface can be insecure.
ERROR 1045 (28000): Access denied for user
'root'@'localhost' (using password: YES)
[root@mysql ~]# mysql -uroot -pcccccc --新密码登录成功
Warning: Using a password on the command line
interface can be insecure.
Welcome to the MySQL monitor. Commands end
with ; or \g.
mysql>
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