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
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(root@localhost) [(none)]> select version();
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+------------+
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| version() |
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+------------+
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| 5.7.17-log |
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+------------+
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1 row in set (0.00 sec)
二,在A机器上创建测试用户并赋予权限
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(root@localhost) [(none)]> create user gl@'192.168.3.173' identified by 'onlygl';
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Query OK, 0 rows affected (0.00 sec)
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(root@localhost) [(none)]> grant all on *.* to gl@'192.168.3.173';
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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
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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:
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-rw------- 1 root root 136 Feb 27 19:04 .mylogin.cnf
五,查看文件里的内容
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[root@mysqltest ~]# mysql_config_editor print --all
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[gl]
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user = gl
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password = *****
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host = 192.168.3.171
六,登录
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[root@mysqltest ~]# mysql --login-path=gl
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Welcome to the MySQL monitor. Commands end with ; or \g.
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Your MySQL connection id is 311
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Server version: 5.7.17-log Mysqlma
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Copyright(c) 2000, 2016, Oracleand/or its affiliates. All rights reserved.
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Oracleis a registered trademark of Oracle Corporationand/or its
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affiliates. Other names may be trademarks of their respective
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owners.
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Type'help;'or'\h'for help. Type'\c'to clear the current input statement.
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(gl@192.168.3.171)[(none)]>
七,如果不想用了,用如下命令删除
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mysql_config_editor remove --login-path=gl
八,适用范围
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mysql
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mysqladmin
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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
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