Calling extra script at startup from nginx

[lbd]

Hi guys, I have my prod deployment of Ubuntu running nginx and in turn web2py. Also thanks to Niphlod I have all HTTP req's rewritten to https!!!! I have an rq implementation in our code and would like to call web2py-rq.py or run sudo rqworker on the box. In my pre prod environment (no nginx) I just add it to the web2py startup scripts so no problem.

My question is where is the best place to do this when running from nginx? I could run it as a separate process entirely, but would really prefer it if it was started by the same script that nginx uses to start web2py OR should I have it as a web2py "cron" job? Either way when nginx starts web2py an rqworker needs to be started.

What is cnsidered "best practice" 

thanks

[Niphlod]

no.no.no.no.no.no.

use services, and separate ones. If you're on ubuntu writing something for upstart is utterly easy.

[Edward de Jongh]

...but how do you really feel about it ;-)

Fair enough, will go the upstart route.

Thank you

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[Niphlod]

description "myqueueprocessor"
start on (local-filesystems and net-device-up IFACE=eth0)
stop on shutdown
respawn limit 8 60 # Give up if restart occurs 8 times in 60 seconds.
exec sudo -u <user> python /path/to/your/script.py
respawn

put it in /etc/init/nameofyourservice.conf

and it'll start as soon as the server is up. Additionally, it will respawn the process if it dies unexpectedly (up to a limit)

then, you can start it with the usual commands

sudo start nameofyourservice
sudo stop nameofyourservice
sudo status nameofyourservice
sudo restart nameofyourservice

[Edward de Jongh]

Thank you Niphlod, much appreciated.

[lbd]

Hi Niphlod, I had to modify the script by removing:

sudo -u <user> 

This would work if the user I required to run it did not require a sudo password, but I prefer all sudo actions to be authenticated.

Thank you again. 

ed

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