The default password for the 'admin' user is 'admin', you can can reset it to this by following the steps below:
1. Login to mysql with the command below:
2. Run the following commands:
update user_definitions set password='21232f297a57a5a743894a0e4a801fc3' where name='admin';
3. Attempt to login to NFA with the 'admin' user with the password 'admin'.
4. Once logged in you can change the password to whatever you want from the Admin->Users page in NFA or Performance Center if linked.