check_nrpe trouble

[Haydn Solomon]

On 10/29/07, Mike Hanby <mhanby at uab.edu> wrote:
>
> Could this be an SELinux issue? (modify below to point to the correct
> paths):
>
> You can test if this is the case before executing the chcon commands by
> running:
>
> $ sudo echo 0 > /selinux/enforce
>
> Then let schedule another nrpe check, if it succeeds, then run the chcon
> commands.
>
> $ sudo echo 1 > /selinux/enforce
> $ sudo chcon -R -t httpd_sys_content_t /usr/local/nagios/sbin/
> $ sudo chcon -R -t httpd_sys_content_t /usr/local/nagios/share/
> $ sudo chcon -R -t httpd_sys_script_rw_t /usr/local/nagios/var/rw/
>
> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net
> [mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf Of Hiamal
> Llanos
> Sent: Wednesday, October 17, 2007 17:06
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] check_nrpe trouble
>
> Hi,
>
> I'm having trouble with check_nrpe and I don't know whats wrong, what
> I'm doing wrong.
> I followed the nagios and nrpe doc's  but it don't work :-P
>
> /var/log/nagios2/nagios.log says:
> SERVICE ALERT: otherhost;nrpe_load;UNKNOWN;SOFT;1;(No output returned
> from plugin)
>
> But if I run the command on the terminal window it works happily:
> $ sudo -u nagios /usr/lib/nagios/plugins/check_nrpe -H otherhost -c
> check_load
> OK - load average: 0.00, 0.00, 0.00|load1=0.....
>
> Hope someone has som clues what could be wrong.
>
>
> The Nagios server host is a i386 smp with Debian Etch  and otherhost
> is a amd64 x2 also with Debian Etch.
>
> On the Nagios server I'm runnig:
> nagios2 2.6-2+etch1
> nagios-nrpe-plugin 2.5.1-3
> nagios-nrpe-server 2.5.1-3
>
> on otherhost:
> nagios-nrpe-plugin 2.5.1-3
> nagios-nrpe-server 2.5.1-3
>
> Nagios config:
> define service{
>         use                             generic-service
>         host_name                       otherhost
>         service_description             nrpe_load
>         check_command                   check_nrpe!check_load
>         }
>
> nrpe config:
> command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c
> 30,25,20
>
>
> TiA


I would check everything from the server to the client to give a clue to
problem. You can try checking in the following order.

1. run the check command locally ie.  on the nrpe server run as user nagios
( or whatever user is configured in nrpe.cfg but nagios is default )
PATH/check_load -w 15..<snip>

2. from the client run the command  PATH/check_nrpe -H <nrpe server> -c
check_load

These tests should narrow down your problem.

Haydn


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