phantom host up messages
Marc Powell
marc at ena.com
Fri Mar 17 17:29:28 CET 2006
> -----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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