phantom host up messages

[Marc Powell]

> -----Original Message-----
> From: Mike Linden [mailto:stanglinden at gmail.com]
> Sent: Friday, March 17, 2006 8:37 AM
> To: Marc Powell
> Cc: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] phantom host up messages
> 
> 
> 
> 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?
> 	>


> 
> 	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.


> 
> 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.

I sure don't. Are you running the latest version of the plugins? What OS
are you running on? Maybe that'll trigger recall for someone ;)

--
Marc 


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