Nagios Support Forum

I got a requirement to setup Nagios passive checks to monitor a server. I managed to set it up according to the guide given and it all works.
But the freshness check only works for the services only and it doesnt work for the Host check.

What is working:

• Passive Checks for the host and services

• If any service is failed, client reports to the Nagios server and I receive the alerts

• When the service is recovered then client reports the UP status back to the Nagios server and I receive the recovery alert

All above work as intended but the freshness check.
If the client server loose network connectivity to the Nagios server then it fails to receive check results. Since Nagios server is not aware that it doesnt receive any new check statuses it keep maintaining the Up status even when the client host is not reachable. That is where we need the freshness check. (As per my knowledge)

I configured the freshness check for both the host and the services. Then if the client failed to report, the services generate alerts based on the freshness threshold. But the freshness check set up for the host doesnt generate any alert at all even when the client doesnt respond.

I really appreciate if any of you can be of any help for me to get this fixed.

Thanks for sharing. I'm going to test this on my XI and see what happens.

UPDATE:

I got this to work.

While reading the documentation on freshness checking, it seems the option in the nagios.cfg is turned off for host freshness checking.

https://assets.nagios.com/downloads/nag ... hness.html

https://assets.nagios.com/downloads/nag ... k_interval

So in your nagios.cfg you will find check_host_freshness=0
Restart your NRDP passive checks, restart nagios, and it should work if you have freshness checking set up through the CCM for that host.
Let us know if you have any more troubles.

Thank you very much Kyang.Its worked after changing the Nagios Core configs as you advised.

@yosh, any other questions or are we ready to lock this one up?

Hi dwhitfield,

We are ready to lock this up.
Thank you..!

Glad to hear it! I'll be closing this thread now, but feel free to open another if you need anything in the future.