bind port failed, port 9000 is in used already

[openkoding]

bind port failed, port 9000 is in used already, where i can find the configuration of bind port？

[solarmicrobe]

The ./start script searches for a environment variable HANNIBAL_HTTP_PORT which defaults to 9000 when not found. You can either set it in your current session or .profile/.bashrc etc as:
export HANNIBAL_HTTP_PORT=9000

Or you can set it for just the start command:
HANNIBAL_HTTP_PORT=9000 ./start

I would put it into the .profile of whatever users is running this (assuming it gets a login shell).

As a side note, if you have lsof installed you can find out what is using port 9000 by running:
lsof | grep 9000.