Marc, I moved the other plugins from another server, and looks like something got screwed during the transfer. I just recompiled all the nagios plugins on the client server and things started working fine. [root@nmsweb libexec]# ./check_nrpe -H <a href="http://10.31.47.21">10.31.47.21</a> -c check_load OK - load average: 0.00, 0.05, 0.02|load1=0.000;15.000;30.000;0; load5=0.050;10.000;25.000;0; load15=0.020;5.000;20.000;0; Thanks, -john <div class="gmail_quote">On Tue, Mar 11, 2008 at 12:27 PM, John Duraisw <<a href="mailto:john.duraiswamy@gmail.com">john.duraiswamy@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Marc, This is what happens when I do that. [root@wsfs7-rhel libexec]# ./check_nrpe -H <a href="http://127.0.0.1" target="_blank">127.0.0.1</a> CHECK_NRPE: Error - Could not complete SSL handshake. [root@wsfs7-rhel libexec]# ./check_nrpe -H <a href="http://127.0.0.1" target="_blank">127.0.0.1</a> -c check_load CHECK_NRPE: Error - Could not complete SSL handshake. [root@wsfs7-rhel libexec]# ./check_nrpe -H <a href="http://127.0.0.1" target="_blank">127.0.0.1</a> -c check_load -n CHECK_NRPE: Received 0 bytes from daemon. Check the remote server logs for error messages. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Mar 11 12:22:34 wsfs7-rhel nrpe[26314]: Host <a href="http://127.0.0.1" target="_blank">127.0.0.1</a> is not allowed to talk to us! Mar 11 12:22:43 wsfs7-rhel nrpe[26317]: Host <a href="http://127.0.0.1" target="_blank">127.0.0.1</a> is not allowed to talk to us! Mar 11 12:22:46 wsfs7-rhel nrpe[26320]: Host <a href="http://127.0.0.1" target="_blank">127.0.0.1</a> is not allowed to talk to $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$<div><div></div><div class="Wj3C7c"> <div class="gmail_quote"> On Tue, Mar 11, 2008 at 12:05 PM, Marc Powell <<a href="mailto:marc@ena.com" target="_blank">marc@ena.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> > -----Original Message----- > From: <a href="mailto:nagios-users-bounces@lists.sourceforge.net" target="_blank">nagios-users-bounces@lists.sourceforge.net</a> [mailto:<a href="mailto:nagios-users-" target="_blank">nagios-users-</a> > <a href="mailto:bounces@lists.sourceforge.net" target="_blank">bounces@lists.sourceforge.net</a>] On Behalf Of John Duraisw > Sent: Tuesday, March 11, 2008 10:52 AM > To: <a href="mailto:nagios-users@lists.sourceforge.net" target="_blank">nagios-users@lists.sourceforge.net</a> > Subject: [Nagios-users] nrpe on rhel 4 {Disarmed} {Fraud?} > > All, > I have problems getting output check_nrpe from client machine. My nagios > server is Centos5 and the client server rhel 4 and I am having the following > issue. I am running the latest version of nrpe and also tried bunch of other > older version, still no luck. When I try to monitor other centos server with > the same config it works fine. > > [root@nmsweb libexec]# ./check_nrpe -H <a href="http://10.31.47.21" target="_blank">10.31.47.21</a> > NRPE v2.10 > [root@nmsweb libexec]# ./check_nrpe -H <a href="http://10.31.47.21" target="_blank">10.31.47.21</a> -c check_load > NRPE: Unable to read output Run the check_load command as defined in nrpe.cfg on <a href="http://10.31.47.21" target="_blank">10.31.47.21</a> as the nagios user on <a href="http://10.31.47.21" target="_blank">10.31.47.21</a> and see what it says. > [root@nmsweb libexec]# ./check_nrpe -H <a href="http://10.31.47.21" target="_blank">10.31.47.21</a> -c check_lljfj > NRPE: Command 'check_lljfj' not defined Define the command 'check_lljfj' in nrpe.cfg on <a href="http://10.31.47.21" target="_blank">10.31.47.21</a>. -- Marc ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/" target="_blank">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div> </div></div></blockquote></div>