Nagios has a extensive documentation online. See if this helps. <a href="http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html#hostgroup">http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html#hostgroup</a> regards Matej Vesel <div class="gmail_quote">On Fri, Jul 24, 2009 at 4:29 PM, Dayo Adewunmi <<a href="mailto:contactdayo@gmail.com">contactdayo@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;"> How do I specify the hostgroup in a separate file? Matej wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im"> linux-server, is the default host definition template. I think you cant use the same name for a template and a hostgroup. When adding host you specify a host template to use with a line like this use linux-server I specify the hostgroup in a seperate file, where I state the name of the group and its members. I never do it with host definitions. later Matej </div><div class="im"> On Fri, Jul 24, 2009 at 1:12 PM, Dayo Adewunmi <<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>>> wrote: This is what I got: <a href="http://pastebin.com/m761159a1" target="_blank">http://pastebin.com/m761159a1</a> So, in ebola.cfg I commented out hostgroup_name linux-servers ; The name of the hostgroup And now it works. How come? Matej wrote: start nagios with nagios -v nagios.cfg You have a error in you config file. The above command will provide you with a detailed output, and you will see in what line the error is .. Go and fix it and retry. On Fri, Jul 24, 2009 at 12:44 PM, Dayo Adewunmi <<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>> </div><div><div></div><div class="h5"> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>>>> wrote: Hi I tried adding either of these lines to nagios.cfg: cfg_file=/usr/local/nagios/etc/objects/ebola.cfg cfg_dir=/usr/local/nagios/etc/objects/desktops And when I restart nagios this is what happens: "Running configuration check... CONFIG ERROR! Restart aborted. Check your Nagios configuration." Matej wrote: Check the Configuration tab in nagios web interface, there it shows the "live" config aka. what it read and loaded. You probably need to add the new config to your nagios.cfg file, so Nagios can read it. You also have a parameter in nagios.cfg, that you can set to a folder, and it reads all *.cfg files in that folder, thaat way you dont need to specify all config files seperatly. On Fri, Jul 24, 2009 at 11:52 AM, Dayo Adewunmi <<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>>> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a> <mailto:<a href="mailto:contactdayo@gmail.com" target="_blank">contactdayo@gmail.com</a>>>>> wrote: Hi all I copied localhost.cfg to create an object definition for a new host: <a href="http://pastebin.com/f21c9df1c" target="_blank">http://pastebin.com/f21c9df1c</a> No matter how often I restart nagios, the new host isn't being monitored. Best regards Dayo Adewunmi ------------------------------------------------------------------------------ _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a> <mailto:<a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a>> <mailto:<a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a> <mailto:<a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a>>> <mailto:<a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a> <mailto:<a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a>> <mailto:<a href="mailto:Nagios-users@lists.sourceforge.net" target="_blank">Nagios-users@lists.sourceforge.net</a> <mailto:<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 -- lp Matej -- lp Matej -- lp Matej </div></div></blockquote> </blockquote></div> -- lp Matej