[Baypiggies] Dumb "keep it running" script

[Drew Perttula]

Todd Valentic wrote:
> 
> The one that I use quite often, especially for a bunch of TurboGears
> based sites I manage, is supervisor (written in python):
> 
>   http://supervisord.org/
> 

I <3 supervisord.

Here's the alive.sh demo, using supervisor:

   Either
     sudo easy_install supervisor
   or
     virtualenv .
     bin/easy_install supervisor
     (and then prefix the rest of the commands with bin/)

   echo_supervisord_conf > supervisord.conf

   Append these lines to the end of supervisord.conf:
     [program:alive]
     command=./alive.sh

   supervisord -c supervisord.conf
   (daemon is launched)

   tail -f /tmp/alive-stdout*
   (watch the output of the command)

There are lots of controls for what to do if alive.sh goes down, how 
many times to retry, for how long, etc.

Controlling the process:
1. supervisorctl -c supervisord.conf
    That launches an interactive console for starting/stopping/checking
    processes.

2. You can also turn on a web UI that looks like this:
    http://bigasterisk.com/post/supervisor1.png

3. You can talk to supervisord over xmlrpc, too.