Supervisord Common Commands

Invoke the supervisor shell:
sudo supervisorctl

# all of the following commands can be run within the supervisor shell or from the UNIX CLI

View processes managed by supervisord:
sudo supervisorctl status

Start/Stop/Restart processes from the UNIX command line:
sudo supervisorctl start processname
sudo supervisorctl stop processname
sudo supervisorctl restart processname

View standard error:
supervisorctl tail -f  processname stderr

Load changes to configuration without restarting unaffected processes:
supervisorctl reread  # reads the configuration changes
supervisorctl update  # restarts changed process groups

Reload supervisor processes and configurations, but doesn't restart supervisor itself:
supervisorctl reload

Sources:
http://stackoverflow.com/questions/3792081/will-reloading-supervisord-cause-the-process-under-its-to-stop