How to change master password of Koha ?

Koha master login username and password is same as MySQL database (e.g. koha_library), where data stored.

First change the password of koha_library database.

Then put new password in /etc/koha/sites/library/koha-conf.xml

Apply following commands in Applications > Accessories > Terminal

sudo mysql -uroot -p  

[enter the MySQL Root password]

use mysql;

SET PASSWORD FOR 'koha_library'@'localhost' = PASSWORD('mamcet@66');

flush privileges;

quit;

Need to change new password in Koha configuration file.

Open the configuration file using any text editor. Use any text editor, mousepad/leafpad. Install mousepad.

sudo apt-get install mousepad 

sudo mousepad /etc/koha/sites/library/koha-conf.xml 

The file will open. Scroll to bottom part of the file and find the line number 271 for password.

Reference: http://kohageek.blogspot.com/