nagios check-host-alive always down {Disarmed} {Fraud?}
Daniel Carvalho
daniel at dep.fem.unicamp.br
Thu Mar 2 17:31:49 CET 2006
Marc,
The nagios users check_ping result is: PING OK - Packet loss = 0%, RTA =
0.07 ms
The SELinux is not enabled because I installed ganglia monitor too. And
there is no message like 'avc denied' in /var/log/message and the output of
command audit2allow is blank.
Thanks
Daniel
On 3/2/06, Marc Powell <marc at ena.com> wrote:
>
> Hmm. That's an unexpected result. The next step would be to go one level
> higher and execute nagios' check_ping as the nagios user --
>
> /path/to/nagios/libexec/check_ping -H 192.168.0.1 -w 3000.0,80% -c
> 5000.0,100% -p 1
>
> Do you have SELinux enabled? Have you modified the default policies? I'd
> look for 'avc denied' messages related to nagios in /var/log/messages
> just to be safe or, as root, run 'audit2allow -l -i /var/log/messages
> -v'.
>
> --
> Marc Powell
> > -----Original Message-----
> > From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
> > admin at lists.sourceforge.net] On Behalf Of Daniel Carvalho
> > Sent: Thursday, March 02, 2006 10:00 AM
> > To: nagios-users at lists.sourceforge.net
> > Subject: Re: [Nagios-users] nagios check-host-alive always down
> {Disarmed}
> > {Fraud?}
> >
> > Hi Marc,
> >
> > The command /bin/ping -n -U -w 10 -c 1 192.168.0.1 is executable for
> user
> > nagios. I logged as nagios user and exec the command above and
> everythings
> > is OK.
> >
> > The nagios machine is running CentOS 4.0. I installed nagios via yum.
> >
> > Thanks
> >
> > Daniel
> >
> >
> > On 3/2/06, Marc Powell < marc at ena.com <mailto:marc at ena.com> > wrote:
> >
> >
> >
> > > -----Original Message-----
> > > From: nagios-users-admin at lists.sourceforge.net <mailto:nagios-
> > users-admin at lists.sourceforge.net> [mailto:nagios-users-
> > > admin at lists.sourceforge.net] On Behalf Of Daniel Carvalho
> > > Sent: Thursday, March 02, 2006 6:11 AM
> > > To: nagios-users at lists.sourceforge.net
> > > Subject: Re: [Nagios-users] nagios check-host-alive always
> down
> > {Disarmed}
> > > {Fraud?}
> > >
> > > Hello Marc, thanks for your answer.
> > >
> > > I'm sorry to reply to you too late. Here in my country we were
> on
> > holiday.
> > >
> > > The notification information is sent to an e-mail address that
> I
> > > especified on contacts.cfg. The web interface is not installed
> > yet.
> > >
> > > Find attached some cfg files and the notification alert.
> > >
> > > Thanks and best regards
> > >
> > > ***** Nagios *****
> > >
> > > Notification Type: PROBLEM
> > > Host: bud01
> > > State: DOWN
> > > Address: 192.168.0.1
> > > Info: /bin/ping -n -U -w 10 -c 1 192.168.0.1
> >
> > It would appear that /bin/ping is not executable by the nagios
> user.
> > Try
> > running the command in the Info as the nagios user. In some
> > distributions, ping is only executable by root. You can modify
> that
> > by
> > giving /bin/ping suid permissions if it doesn't have them
> already --
> >
> > # ls -al /bin/ping
> > -rwxr-xr-x 1 root root 27860 Sep 29 13:28
> /bin/ping
> >
> > # chmod u+s /bin/ping
> >
> > # ls -al /bin/ping
> > -rwsr-xr-x 1 root root 27860 Sep 29 13:28
> /bin/ping
> >
> > --
> > Marc
> >
> >
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> > ::: Please include Nagios version, plugin version (-v) and OS
> when
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> >
> >
>
>
>
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> ::: Please include Nagios version, plugin version (-v) and OS when
> reporting any issue.
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