In putting together my new light setup, I decided it was time to make my lights a service. Since I lost my pi's configuration a few weeks ago (The FS on the SD card went bad, so I decided it was time to switch to Arch Linux on the Pi...), I decided it was time to make it a service.

I've always found services on Ubuntu/Debian a bit confusing. I know that there are a set of scripts that go in /etc/init.d, but I never know what is supposed to go in them, or how to write one from scratch.

Of course, Arch uses systemd, so it's trivial. I put a file that looks like this in /etc/systemd/sysetm named pylights.service, and now I can treat it like a service.

[Unit]
Description=Python Weblights

[Service]
Type=simple
PrivateTmp=false
PIDFile=/run/pylights.pid
ExecStart=/usr/bin/python2 /root/pyLights/web/web.py &

[Install]
WantedBy=default.target

[[email protected] system]# systemctl status pylights
pylights.service - Python Weblights
   Loaded: loaded (/etc/systemd/system/pylights.service; static)
   Active: active (running) since Thu 2014-04-10 18:36:13 MDT; 4min 7s ago
 Main PID: 15643 (python2)
   CGroup: /system.slice/pylights.service
           `-15643 /usr/bin/python2 /root/pyLights/web/web.py &

Apr 10 18:36:13 lights systemd[1]: Started Python Weblights.
Apr 10 18:36:20 lights python2[15643]: Bottle v0.12.5 server starting up (using WSGIRefServer())...
Apr 10 18:36:20 lights python2[15643]: Listening on http://0.0.0.0:80/
Apr 10 18:36:20 lights python2[15643]: Hit Ctrl-C to quit.
[[email protected] system]# systemctl restart pylights
[[email protected] system]# systemctl stop pylights
[[email protected] system]# systemctl start pylights
[[email protected] system]# systemctl status pylights
pylights.service - Python Weblights
   Loaded: loaded (/etc/systemd/system/pylights.service; static)
   Active: active (running) since Thu 2014-04-10 18:40:33 MDT; 5s ago
 Main PID: 15659 (python2)
   CGroup: /system.slice/pylights.service
           `-15659 /usr/bin/python2 /root/pyLights/web/web.py &

Apr 10 18:40:33 lights systemd[1]: Started Python Weblights.
Apr 10 18:40:39 lights python2[15659]: Bottle v0.12.5 server starting up (using WSGIRefServer())...
Apr 10 18:40:40 lights python2[15659]: Listening on http://0.0.0.0:80/
Apr 10 18:40:40 lights python2[15659]: Hit Ctrl-C to quit.

It's that easy. Now I just need to figure out JQuery color pickers, and some AJAX stuff, write an Android app, (Sorry iOS lovers, I gave away my iPod, and in any case, I'm not paying Apple $100 a year for the privilige of running my own code on MY device.), do this, do that, and be done in the next 3 years... Oh, and I'll probably port it to Python3 somewhere along the way...

Edit: Added install options to make it enable-able through systemctl.