有一个业务需求是从一台主机上dump MySQL数据库的数据,但是又不想让业务人员知道具体MySQL用户的密码,可以用mysql_config_editor命令实现
一,测试环境
A机器IP为192.168.3.171
B机器IP为192.168.3.173
打算实现无“密码”从B连接到A
A和B的数据库版本
-
(root@localhost) [(none)]> select version();
- +––––––––––––+
- | version() |
- +––––––––––––+
- | 5.7.17-log |
- +––––––––––––+
- 1 row in set (0.00 sec)
二,在A机器上创建测试用户并赋予权限
-
(root@localhost) [(none)]> create user gl@‘192.168.3.173’ identified by ‘onlygl’;
- Query OK, 0 rows affected (0.00 sec)
- (root@localhost) [(none)]> grant all on *.* to gl@‘192.168.3.173’;
- Query OK, 0 rows affected (0.01 sec)
三,在B机器上执行如下命令,输入gl用户的密码
- mysql_config_editor set –login-path=gl –host=192.168.3.171 —user=gl —password
四,执行上面命令后,可以在home的目录下找到一个隐藏文件.mylogin.cnf,如下:
- -rw——- 1 root root 136 Feb 27 19:04 .mylogin.cnf
五,查看文件里的内容
-
[root@mysqltest ~]# mysql_config_editor print ––all
- [gl]
- user = gl
- password = *****
- host = 192.168.3.171
六,登录
-
[root@mysqltest ~]# mysql –login-path=gl
- Welcome to the MySQL monitor. Commands end with ; or \g.
- Your MySQL connection id is 311
- Server version: 5.7.17-log Mysqlma
- Copyright (c) 2000, 2016, 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.
- (gl@192.168.3.171)[(none)]>
七,如果不想用了,用如下命令删除
- mysql_config_editor remove –login-path=gl
八,适用范围
-
mysql
- mysqladmin
- mysqldump
九,总结
1.显而易见的是用户密码被修改后,需要重新创建login-path
2.该功能仅仅在5.6.6以上版本才支持