nagios check-host-alive always down {Disarmed} {Fraud?}

[Marc Powell]

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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