Re: Keeping a process alive

Jonathan, Nate, and Tom:

Thanks for your insight and suggestions.  I'll play around with it; I'm sure
one of these suggestions or some variation on them will do the trick.

Thanks again

--John


----- Original Message -----
From: "John Lucas" <[email protected]>
To: "ACLUG Linux-Help List" <[email protected]>
Sent: Monday, April 28, 2003 8:09 AM
Subject: [linux-help] Keeping a process alive


> Hello, all!
>
> Just for fun, I've set up my Linux RH 7.2 (I know... I should upgrade) box
> as a streaming audio encoder and server.  I'm encoding Butler County
police
> scanner audio and streaming it to whoever is interested. I have a web page
> set up to provide access to the stream:
>
> http://users.sctelcom.net/~jdlucas/scanner/
>
> (it works most of the time, unless my ISP changes my IP on me, then I have
> to edit the web page...)
>
> Anyone is more than welcome to try it; Butler County isn't all that
> exciting, though.  I'm working on setting up a stereo stream; one channel
> Butler County, the other Sedgwick (I have a scanner that will monitor
> trunked systems.)
>
> I'm using "darkice" as the soundcard-to-mp3 stream encoder, and "icecast"
as
> the server, both on the same machine, a PII 350MHz.
>
> The problem I'm having is that darkice is kind of unstable, meaning it may
> run anywhere from 30 minutes to 30 hours before crashing, but it will
> eventually crash.
>
> I currently have the darkice configuration set up so that it runs 5 hours
59
> minutes and 45 seconds before shutting down, and I have the crontab set up
> to restart the process every 6 hours.  At best, you get a 15 second gap in
> the audio every six hours; at worst, the server is dead for about 6 hours.
>
> I'm looking for something to stick in the crontab to check if the darkice
> process is running every 30 minutes or so, and, if it is, leave it alone,
> and if it has died, restart it.
>
> Perhaps crontab isn't the best answer?  I'm open to suggestions...
>
> By the way, the darkice encoder insists on running with superuser
> privileges... something about threading.
>
> Any help is appreciated!
>
> Thanks!
> --John
>
>
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