I may be missing it but where do you point it to the other server. I thought you need to add the nagios server you wish to check as an arg. <div class="gmail_quote">On Dec 18, 2014 6:50 PM, "Ditmar Tavares" <<a href="mailto:DTavares@clearwater.ca">DTavares@clearwater.ca</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div lang="EN-CA" link="blue" vlink="purple"> <div> I’m new to Linux and also to Nagios monitoring, so it may be something that I’m missing. I setup a second Nagios server so I can monitor my primary Nagios server, basically if the primary Nagios stop monitoring I would like to know via the secondary Nagios. Issue is that I setup the check_nagios plugin and its giving me the status of the Nagios process of the primary server, but when I shutoff the Nagios process on the primary server (for testing), I am NOT getting any notification from the secondary server that something is wrong with the primary, and its also keeps telling me the process on the primary servers is OK. Could you please assist ? thank you in advance. See my host service definition below. define service { use generic-service host_name ClearMon02 service_description Nagios check_command check_nagios notifications_enabled 1 } My command definition is below define command{ command_name check_nagios command_line $USER1$/check_nagios -F /usr/local/nagios/var/status.dat -e 1 -t 15 -C /usr/local/nagios/bin/nagios } </div> ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. </div> </blockquote></div>