How do i configure MySQL when or after compiling the source from github? because currently when i run it, it will show error as follow:
```
[Error]: Couldn't connect with username = 'ragnarok', password = 'ragnarok', host = '127.0.0.1', port = '3306', database = 'ragnarok'
```
This is caused by my MySQL server already configure to different port and i am using different username, password, and database. How do i reconfigure this database settings? Thank you.
Platform: uBuntu 18.04