Hosts check stuck in pending

[maddog123]

I'm using Nagios® Core™ 4.1.0rc1 running on 64 bit Cent OS 5.11
When I check the Map option i see 2/3 of the map pending and the other 1/3 up and green
the services are all OK in status the logs don't show anything unusual the same hosts that are in pending state also on the Hosts listing dont show and Duration time just "???" in that field. The only way i can get the pending to change is to Re-schedule the next check of this host is the only way i can get the map display to show each host up instead of pending.
I have searched Google and the forum posts And only see something like this in Nagios XI but I dont have the option it talks about to change this.

https://support.nagios.com/forum/viewto ... 16&t=27673

Any help would be greatly appreciated

[jdalrymple]

This is typical behaviour of a host that doesn't have a valid host check defined. Do you?

It might be helpful to look at the host definition in objects.cache for a host stuck in PENDING. Clues are usually easy to spot there.

[maddog123]

Every host has a
check_command check-host-alive

See my host.cfg attached

[maddog123]

here is my host.cache file

[maddog123]

They look like the same setup for one the is show up correctly and another that is showing up correctly?

[jdalrymple]

Everything looks OK. Next step is to peer at your nagios.log file for anomalies. Something is preventing your checks from running and it's hard to say what. nagios.log may have clues - and additionally it could be a problem in your nagios.cfg. Can you shoot that our way for review?

Also - anecdotally and totally not related, why bleeding edge Nagios on such an old version of Cent?

[maddog123]

i had it available at the time the Linux box and it wasn't being used plan to update this summer but haven't gotten around to it.

here are the two files

thank you for your help!!

[tgriep]

It could be that your retention.dat file is corrupt. You could delete it but the consequences of that is your system will lose all of the notes, downtime, duration, and all of your checks will start over like it is a new system.
If you are willing to to this, here is how to do that.
In a shell as root run the following

Code: Select all

service nagios stop
rm /usr/local/nagios/var/retention.dat
service nagios start

Let us know if the hosts start up after doing this.

[maddog123]

that seemed to do the trick thank you, does that have to be done once in awhile?

[tgriep]

Shouldn't have to be done at all unless that file was corrupted.
Possible causes are power outages, drive failure or the drive filling up, etc.
Shall I close the post?