Hi Van, Looks like it may be a type error: in your service definition, you use the check command called: check_url.pl In your command definition, you have named the command: check_url ### without the .pl Also, when before starting nagios, you can have it run a configuration check with something like: /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg That should alert you to the config option which is failing. It should say something like, undefined check_command on line XXX of services.cfg Hope that helps, -Philip <div class="gmail_quote">On Mon, May 18, 2009 at 7:16 AM, Evans Plummer <<a href="mailto:evans.plummer@usis.com">evans.plummer@usis.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;"> <div> Morning, I am attempting to use the above referenced plugin without success. I can execute it from a command line and it works fine, when I add it to the cfg file it does not. I get the "Running configuration check... CONFIG ERROR! Restart aborted. Check your Nagios configuration." error. Here is the syntax I am using: define service{ use generic-service host_name somehost service_description URL check_command check_url.pl!URL!1 max_check_attempts 5 normal_check_interval 5 retry_check_interval 3 check_period 24x7 notification_interval 0 notification_period 24x7 notification_options c,r contact_groups some group } I have defined this info in the command.cfg file, I assume this must be done for all added check commands? Is this true? # 'check_url command' definition define command{ command_name check_url command_line $USER1$/check_url.pl $HOSTADDRESS$ $ARG1$ $ARG2$ } Through trail and error I have remmed out all lines in the "define service" section 1 at a time and restart the Nagios service and have identified the "service_description" line as being the problem. That seem very strange to me since it appears to only be a name. Never the less, I obviously have some syntax error preventing this from operating properly. Thanks for any assistance! Van <div><hr> The information contained in and transmitted with this e-mail is confidential. It is intended only for the individual or entity designated above. You are hereby notified that any dissemination, distribution, copying or use of or reliance on the information contained in and transmitted with this e-mail by or to anyone other than the recipient designated above by the sender is unauthorized and strictly prohibited. If you have received this e-mail in error, please contact the sender immediately and notify them that you received this in error. Any e-mail erroneously transmitted to you should be immediately destroyed. Thank you for your attention to this note of confidentiality. </div> </div> ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. <a href="http://p.sf.net/sfu/businessobjects" target="_blank">http://p.sf.net/sfu/businessobjects</a> _______________________________________________ Nagiosplug-help mailing list <a href="mailto:Nagiosplug-help@lists.sourceforge.net">Nagiosplug-help@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagiosplug-help" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagiosplug-help</a> ::: Please include plugins version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>