Re: [Xen-users] Xen hearbeat and automatic restarts?

[Josiah Bryan <jbryan@xxxxxxxxxxxxxxxxxxxxxx>]

I don't know about formal tools, per se, but I would just set up ssh 
keys between the DomU and Dom0. Then set up a script in crontab every 
minute (or X minutes) to ssh to the Dom0 and touch /tmp/myheartbeat.
Then on the Dom0, I'd use a perl program (because I write mostly in perl 
- shell script would work fine too, I'm sure.). Something like:
#!/usr/bin/perl
if((time - (stat('/tmp/myheartbeat')) > 120)  # seconds to wait before 
killing and restarting the domu on a missed heartbeat
{
   system("xm destroy mydomu");
   system("xm create mydomu");
}

Save it and run it from crontab every X minutes.

Totally untested and just from the top of my head, but something like 
that should work quite well and should take a whole 10 minutes to setup.
Regards,
-josiah



Morten W. Petersen wrote:
> Hi,
>
> are there any tools for Xen where availability of a domU can be 
> monitored,
> and if it has hanged or shutdown, it automatically gets restarted?
>
> Thanks,
>
> Morten

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