Where does Gunicorn come from in `service gunicorn restart`?

Question

When I pip freeze, I do not see Gunicorn. I am wondering where Gunicorn comes from when I run service gunicorn restart/stop. And what is service's relationship with Upstart?

Thanks.

Edit:

I now understand that in service gunicorn restart, gunicorn is just the name of a script (sans the .conf extension) that I place in /etc/init/. service is a command that searches for System-V scripts in /etc/init.d and Upstart scripts in /etc/init.

Can anyone help to see if there are any problems with this table?

|------------------+-------------+-----------+---------------------------------|
|                  |          service        |             on a Mac            |
|------------------+-------------+-----------+---------------------------------|
| actual manager   | ?           | init(8)   | launchd                         |
| interface        | ?           | initctl   | launchctl                       |
| name             | System-V    | Upstart   |                                 |
| Script locations | /etc/init.d | /etc/init | ~/Library/LaunchAgents and more |
|------------------+-------------+-----------+---------------------------------|

Possible duplicate of What's the difference between "Service" and "/etc/init.d/"? — muru, Nov 14 '15 at 06:34

score 0 · Answer 1 · answered Nov 16 '15 at 03:20

Now that systemd's the init system in Ubuntu, the table looks more like:

+------------------+---------------+-------------------+---------------------------+-----------------------------------+
|                  |                      service                                  |             on a Mac              |
+------------------+---------------+-------------------+---------------------------+-----------------------------------+
| actual manager   | none          | init(8)           | systemd(1)                | launchd                           |
| interface        | /etc/init.d/* | initctl           | systemctl                 | launchctl                         |
| name             | System-V      | Upstart           | systemd                   | launchd                           |
| Script locations | /etc/init.d   | /etc/init         | /etc/systemd              | ~/Library/LaunchAgents and more   |
|                  |               | ~/.config/upstart | /lib/systemd/system, etc. |                                   |
+------------------+---------------+-------------------+---------------------------+-----------------------------------+

Where does Gunicorn come from in `service gunicorn restart`?

1 Answers1