Preface
Connection security is one of the most important safety strategies which we should consider.It's not a good manner using plaintext password in my.cnf file when connecting mysql server by client.What can we do more safely?
Introduce
MySQL provide a method called "login-path" which permits merely using parameter "--login-path" to login MySQL server since 5.6 version.Notice,login-path depends on program "mysql_config_editor" which belongs to MySQL main program most probably in "/usr/local/mysql/bin" directory.First of all,we need to set a login path name(also a group name) with it,then the ".mylogin.cnf" will be created which contains user,password,host,port,socket and so forth.The password in ".mylogin.conf" file is shown as asterisks(eg. password=*****).Afterward,MySQL client will have a safer authentication credentials in loging MySQL servers.
Procedure
example
usage
1 mysql_config_editor [program options] [command [command options]]
Parameter
1 -#, --debug[=#] This is a non-debug version. Catch this and exit. 2 -?, --help Display this help and exit. 3 -v, --verbose Write more information. 4 -V, --version Output version information and exit. 5 6 Variables (--variable-name=value) 7 and boolean options {FALSE|TRUE} Value (after reading options) 8 --------------------------------- ---------------------------------------- 9 verbose FALSE 10 11 Where command can be any one of the following : 12 set [command options] Sets user name/password/host name/socket/port 13 for a given login path (section). 14 remove [command options] Remove a login path from the login file. 15 print [command options] Print all the options for a specified 16 login path. 17 reset [command options] Deletes the contents of the login file. 18 help Display this usage/help information.
Create a login path named "3306".
1 [root@zlm1 19:17:01 ~] 2 #mysql_config_editor set --login-path=3306 -h127.0.0.1 -P3306 -uroot -p 3 Enter password: 4 5 [root@zlm1 19:18:21 ~] 6 #
Check the contents of login path.
1 [root@zlm1 19:18:32 ~] 2 #mysql_config_editor print --all 3 [3306] 4 user = root 5 password = ***** -- Here is several asterisks instead of plaintest password. 6 host = 127.0.0.1 7 port = 3306
Check the config file in user home directory.
1 [root@zlm1 19:19:46 ~] 2 #ls -la|grep mylogin.cnf 3 -rw------- 1 root root 156 Jun 27 19:18 .mylogin.cnf 4 5 [root@zlm1 19:20:05 ~] 6 #cat .mylogin.cnf -- All the contents in ".mylogin.cnf" file have been encrypted. 7 8 9 ᑸ¨K巧-2#[q- ¨ÿ·t㼝«ɽ(Ͽ欕鋳쾋 q ̓أ&¸ۑ Sن�}uj 10 ņZPַ1©ս¬ʨh±8 11 [root@zlm1 19:20:16 ~] 12 #Xshell
Connect Server with client program by login path.
1 [root@zlm1 19:21:28 ~] 2 #mysql --login-path=3306 3 Welcome to the MySQL monitor. Commands end with ; or g. 4 Your MySQL connection id is 18 5 Server version: 5.7.21-log MySQL Community Server (GPL) 6 7 Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. 8 9 Oracle is a registered trademark of Oracle Corporation and/or its 10 affiliates. Other names may be trademarks of their respective 11 owners. 12 13 Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. 14 15 root@127.0.0.1:3306 [(none)]>
Connect Server with client program by login path.
1 [root@zlm1 19:24:07 ~] 2 #mysql --login-path=# 3 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) 4 5 [root@zlm1 19:24:17 ~] 6 #mysql_config_editor --print all 7 mysql_config_editor: [ERROR] unknown option '--print' 8 9 [root@zlm1 19:24:44 ~] 10 #mysql_config_editor print --all 11 [3306] 12 user = root 13 password = ***** 14 host = 127.0.0.1 15 port = 3306 16 [#] 17 user = root 18 password = ***** 19 host = 127.0.0.1 20 port = 3306
Remove a login path.
1 [root@zlm1 19:25:12 ~] 2 #mysql_config_editor remove --login-path=# 3 4 [root@zlm1 19:27:09 ~] 5 #mysql_config_editor print --all 6 [3306] 7 user = root 8 password = ***** 9 host = 127.0.0.1 10 port = 3306
It's not supported using special character such as "#","￥",“%”,etc.
1 [root@zlm1 19:47:13 ~] 2 #mysql_config_editor set --login-path=# -h127.0.0.1 -P3306 -uroot -p### 3 mysql_config_editor: [ERROR] mysql_config_editor: unknown option '-#' 4 5 [root@zlm1 19:49:10 ~] 6 #mysql_config_editor set --login-path=# -h127.0.0.1 -P3306 -uroot -p$$$ 7 mysql_config_editor: [ERROR] mysql_config_editor: unknown option '-3' 8 9 [root@zlm1 19:49:21 ~] 10 #mysql_config_editor set --login-path=# -h127.0.0.1 -P3306 -uroot -p%%% 11 mysql_config_editor: [ERROR] mysql_config_editor: unknown option '-%'
Summay
- I'm afraid login-path is a safer method in logining MySQL.
- Notice that characters of password must be confirmed to the MySQL password rules.
- In the past,we usually put those parameters(host,port,user,password,etc.) in /etc/my.cnf to void repeated words typing,but it's realy not safe.