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Asked: 2010-02-19 16:33:10 +0800 CST

Supervisor HTTP Server Port Issue

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I have supervisor setup to manage a few processes. It works perfectly fine when I boot my server, however when I stop it and try to start it again it fails and give's me this error msg:

 * Starting Supervisor daemon manager...
Error: Another program is already listening on a port that one of our HTTP servers is configured to use.  Shut this program down first before starting supervisord.
For help, use /usr/bin/supervisord -h
   ...fail!

I'm running nginx on port 80 and 4 web servers on ports 8000, 8001, 8002, 8003

Does anyone have any idea of what is going on?

When I reboot everything works fine.

supervisord

3 Answers

  1. Just ran into this as well. I fixed it by doing either of these:

    sudo unlink /tmp/supervisor.sock

sudo unlink /var/run/supervisor.sock

    This .sock file is defined in /etc/supervisord.conf [unix_http_server] file config value (default is /tmp/supervisor.sock or /var/run/supervisor.sock).

    Hope this helps someone in the future.

    • 93

  2. I'd use lsof to find out what process is listening on those ports.

    lsof -i tcp | grep LISTEN

    Once you've worked out what process it is, that's half the battle.

    • 9

  3. This would generally not be the case with you but I was hitting this error when I was mistakingly using supervisord instead of supervisorctl.

    • 0