HI,<br><br>I run a distributed Nagios environment consisting of 1 parent server and 2 child servers.<br><br>The child servers perform all the service checking while the parent server should be performing active service checks.<br>
<br>The host definitions are configured to perform host checks every 5 minutes. The retry interval is 1 minute and the max attempts is set to 5.<br><br>We are monitoring 580 hosts and approx 4000 services.<br><br>I noticed when a host down was detected the parent server did not perform any retries of the host. This led to the status of the host being stuck in a SOFT state and therefore no alerts were sent out as required. I noticed that the child server performed the host checks without any problem and the host was logged as being in a HARD down state after 5 failed attempts.<br>
<br>Is there a specific variable in nagios.cfg that explicitly tells the server to perform active checks?<br><br>Is it best practice to have the 2 child servers perform passive host checks? Is it possible that processing all the passive service check info is causing the parent server to lag behind in it's own process queue?<br>
<br>Thanks for you help.<br><br>Paul<br>