<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.26.3"> </HEAD> <BODY> On Thu, 2009-08-06 at 09:08 -0700, Mirza Dedic wrote: <BLOCKQUOTE TYPE=CITE> <PRE> Hello, I plan to use Host Check Dependency on my services... can someone please confirm that the below will do the following scenario: If Ping fails to the host machine (van-sql01) that is being monitored, Nagios will suppress the services listed in the dependent_service_description portion of the configuration... define servicedependency{ host_name van-sql01 service_description Ping dependent_host_name van-sql01 dependent_service_description NSClient Version, Uptime, C - Disk Space, D - Disk Space, CPU Over 25min, Memory execution_failure_criteria w,u,c notification_failure_criteria w,u,c } Will this setup achieve that? What if Nagios does not check PING first? Or will the setup above force for a ping check initially before checking these services? (If ping is still pending, will it wait until It gets the status of PING before checking these services and suppressing them incase PING has failed??) Thanks. </PRE> </BLOCKQUOTE> Yes, what you have looks fine. I have the same situation with checking linux servers over ssh, and my service dependency list is quite similar to yours - define servicedependency{ host_name linux_server_1 service_description ssh dependent_host_name linux_server_1 dependent_service_description var partition,total processes,current load,swap usage notification_failure_criteria c,u,w execution_failure_criteria c,u,w } I don't know about scheduling well enough to say if the non-dependent service is checked first, or if simply the notices/event handlers/whatever else you have happening/ are delayed on the key service, but you won't see any action taken by nagios until the dependent service state is established. </BODY> </HTML>