phantom host up messages

[Mike Linden]

On 3/16/06, Marc Powell <marc at ena.com> wrote:
>
>
>
> > -----Original Message-----
> > From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
> > admin at lists.sourceforge.net] On Behalf Of Mike Linden
> > Sent: Thursday, March 16, 2006 8:08 AM
> > To: nagios-users at lists.sourceforge.net
> > Subject: [Nagios-users] phantom host up messages
> >
> > Hi,
> > I have a couple systems that have been unplugged and removed from the
> rack
> > ,yet Nagios still reports a Host UP alert for them from the check_ping
> > process.
> > How is this possible?
> >
> > ***** Nagios  *****
> >
> > Notification Type: RECOVERY
> > Host: csep1039
> > State: UP
> > Address: csep1039
> > Info: (No output!)
> >
> > Date/Time: Thu Mar 16 08:56:42 EST 2006
>
> The plugin/command you are using to check the host is providing no
> command line output but is still exiting with a code of 0 (successful).
> Try running the check_command, as the nagios user, exactly as it's
> defined, from the command line and then 'echo $?'. The results of the
> echo for a down host should be '2'. Chances are you're going to see some
> additional error output from ping/check_ping.
>
> There was also a suggestion earlier for another issue to add '2>&1' to
> the end of the check_command definition to redirect error output back to
> Nagios. If that works as advertised, and I believe it will, that could
> be informative as well.
>
> --
> Marc
>
>
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Marc,
indeed there are other issues here.
The check_ping is seg faulting with an error code of 139

./check_ping -H csep0602 -w 100.0,20% -c 500.0,60% ; echo $?
Segmentation fault
139

Which is resulting in a host up message.
Do you have any idea why this would occur on a seemingly random basis?  I
also manually ran the command for other servers, which also resulted in the
same output.

Thanks
Mike

--
Mike Linden
http://linden.linuxps.com
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