Nagios checks stuck - Not running hosts checks.

[solarisfire]

A large number of host checks are stuck in a pending state...

nagiosxi-stuck-1.PNG

The host looks to be configured correctly, but the last check is shown as 1970?? And the next check is scheduled to run correctly, but it never runs.

Forcing an immediate check returns that the command has been submitted correctly but never runs.

The host can be pinged just fine.

[solarisfire]

Turns out the hosts didn't have a check command set after being imported...

I did a bulk update of check commands on all of the hosts and set it to "check-host-alive" and things are working now.

Surprising that a host can exist with no check command...

[ssax]

That's great to hear, thank you for posting your resolution!

It is like that because the settings can be defined in a template and inherited from there or for passive checks that don't require a command.

Let us know when we're okay to lock this up and mark it as resolved.

Thank you!