Nagios Support Forum

I'm trying to test the alerts by submitting passive check result (multiple times).

Now Nagios thinks the host is flapping between states and won't send further alerts.

How would I clear this?

Thanks,

klee

I don't know of a built-in way to do this, but you can cheat and just submit a bunch of the same passive result in a row to make it look like it is no longer flapping.

Say I have a production Nagios system, which I can't easily reboot.

I send several passive check results to test an event.

Nagios sees this and determines the host is flapping.

Now, the host won't go back to its normal state....

You're saying there's no standard way to reset this?

What do you mean by "reset this"? Do you mean reset the host back to an OK state, or reset the flapping history? Flapping looks at the last 21 states of the host or service and determines the flapping state based on a certain threshold. So in order to reset the flapping history you would need to clear out the last 21 results, or however many would be needed to tip the average back below the set threshold. And as for resetting the state, you can do so just by submitting a single passive OK result.

Yes, I mean reset host back to OK state so I can continue testing.

If I need to clear ~21 states (in to order to reset the flapping history) so future alerts will function properly, I'll do that as well.

To reset a HOST back to an OK state:

• Find the host object and click on it
  Click the Advanced tab
  Under Commands click Submit passive check result
  Make sure the Check Result is UP
  Type OK in the Check Output
  Click the Commit button

NOTE: The next time this host is checked, if it is not contactable it will go back to the down state.

Resetting a service back to an OK state is the same steps.

Thank you very much.

klee

Can we close this thread now?

Please and Thank You.

-klee