Host Down alert when Host is Up

[jjesse at iserv.net]

I assume you reloaded Nagios after changing the file?

On Friday 09 September 2005 10:51, Sxan wrote:
> The IP addresses did change, but I accounted for that
> in the hosts.cfg file for this host. I'm not an expert
> with Nagios so I'm not sure totally what you mean when
> you're asking if I use state retention. But basically
> the situation is that everything worked fine
> yesterday, IP addresses were changed and the 2 servers
> were put on a new vlan, but they are still up and
> completely reachable by ping and whatever else. That's
> why I'm kind of confused. Here's the nagios
> notification if it helps at all...
>
> ***** Nagios  *****
>
> Notification Type: PROBLEM
> Host: boca-srv01
> State: DOWN
> Address: 10.168.0.201
> Info: CRITICAL - Plugin timed out after 10 seconds
>
> Date/Time: Fri Sept 9 10:47:18 EDT 2005
>
>
>
>
>
> ~Jim
>
> --- Fred <f1216 at yahoo.com> wrote:
> > Yes, you are correct, I misspoke (typed?), however,
> > my point
> > remains that if the host-check returns a critical,
> > nagios will
> > treat the node as down.  Whatever the command you
> > are using ...
> >
> > "down" is a state which is defined by the
> > host-check, it doesn't
> > always mean the host is down, maybe its just not
> > behaving as
> > expected.
> >
> > -FredC
> >
> > --- Subhendu Ghosh <sghosh at sghosh.org> wrote:
> > > On Fri, 9 Sep 2005, Fred wrote:
> > > > On my configuration, I ping some smart switches
> >
> > via a host-check.
> >
> > > > If the TTL is out of bounds according to the
> >
> > host-check command
> >
> > > > it returns a warning or critical.  If it returns
> >
> > a critical the
> >
> > > > switch is reported as "down".
> > > >
> > > > -FredC
> > >
> > > check_ping only support RTA and packet loss.  You
> >
> > must be using something
> >
> > > else..
> > >
> > > > --- Subhendu Ghosh <sghosh at sghosh.org> wrote:
> > > >> On Fri, 9 Sep 2005, Sxan wrote:
> > > >>> Hey everyone,
> > > >>>
> > > >>> We just changed the vlan that 2 servers are on
> >
> > in one
> >
> > > >>> location and all of a sudden Nagios is now
> >
> > reporting
> >
> > > >>> those servers as being down, even though I'm
> >
> > able to
> >
> > > >>> ping them fine from the Nagios server itself
> >
> > and
> >
> > > >>> everything else is functioning just fine. I'm
> >
> > confused
> >
> > > >>> as to why this would happen. Any ideas? I'm
> >
> > also
> >
> > > >>> wondering if this could be related to the TTL
> >
> > possibly
> >
> > > >>> changing? If so, does anyone know any simple
> >
> > way to
> >
> > > >>> change the ttl that Nagios looks for or maybe
> >
> > increase
> >
> > > >>> it somehow on the box? Thanks as always!
> > > >>>
> > > >>> ~Jim
> > > >>
> > > >> TTL doesn't matter.  Did you change the IP addr
> >
> > of the servers in the
> >
> > > >> nagios config?  Are you use state retention?
> > > >>
> > > >>
> > > >> --
> > > >> -sg
> > >
> > > --
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September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
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