Step by step example

Install and run supervisor

# apt-get install supervisor
# service supervisor status
# service supervisor restart

we’ll assume we have a shell script we wish to keep persistently running, that we have saved at ~/workspace/script/run/ and looks like the following:

dstat -tn  --output ~/workspace/script/report/dstat_network_bandwidth_usage.csv  --noupdate 3600

Make this script executable:

$ chmod +x /usr/local/bin/

The program configuration files for Supervisor programs are found in the /etc/supervisor/conf.d directory, normally with one program per file and a .conf extension. A simple configuration for our script, saved at /etc/supervisor/conf.d/dstat.conf, would look like so:


Once our configuration file is created and saved, we can inform Supervisor of our new program through the supervisorctl command. First we change directory path to /etc/supervisor/ and tell Supervisor to look for any new or changed program configurations in the /etc/supervisor/conf.d directory with:

# cd /etc/supervisor/
# supervisorctl reread

Followed by telling it to enact any changes with:

# supervisorctl update

To enter the interactive mode, start supervisorctl with no arguments:

# supervisorctl
    dstat_network_bandwidth_usage    RUNNING   pid 13405, uptime 0:14:49
    $ supervisor> status
    dstat_network_bandwidth_usage    RUNNING   pid 13405, uptime 0:14:52
    $ supervisor>
    supervisor> restart dstat_network_bandwidth_usage
    dstat_network_bandwidth_usage: stopped
    dstat_network_bandwidth_usage: started
    $ supervisor> status
    dstat_network_bandwidth_usage    RUNNING   pid 13720, uptime 0:00:06
    $ supervisor>