capture return value from event handler?

[JoyBush]

How can I get an event handler to change (set) the state of a dummy host?

I have been stuck for a week trying to do something like this. Any help greatly appreciated!

Thank you very much!

Joy

[abrist]

Well, you usually configure the output of the dummy plugin in the config. So you would have to change the config and restart nagios. You could have the event handler submit a passive check for the object instead of trying to change the dummy state.

[JoyBush]

Thank you for the response, but my problem is a little different ... some clarification:

We need to be able to continually change the status of a dummy host on the fly - not by shutting Nagios down and restarting - based on the status of various hosts/services that are checked within the event handler.

Joy

[abrist]

Gotcha. I still think the best method is to submit a passive check to set the state of the object. You can do so from the cli through the command pipe, or through an external call to the cgi with a get request. You would want to turn off freshness checking and active checks on the object so that only the passive checks will effect its state.

[JoyBush]

Thank you for your response. I understand, I think, that I can set the state of the dummy host via having my event handler write a PROCESS_SERVICE_CHECK_RESULT command to the nagios.cmd file. However, I do not understand your reference to a "get request". Could you please give me some more information on what you meant by that?

Thanks!
Joy

[abrist]

The cmd.cgi can accept commands through an http get request. For example, to submit a passive check for a host, you can do a wget or curl on the following url:

Code: Select all

http://<nagios server ip>/nagios/cgi-bin/cmd.cgi?cmd_typ=87&cmd_mod=2&host=<hostname>&plugin_state=<state id: 0,1,2>&plugin_output=TEST%20Output&performance_data=&btnSubmit=Commit

Make sure to change <nagios server ip>, <hostname>, and <state id: 0,1,2> as you see fit. The url needs to be url encoded, that is why the space in the plugin_output is encoded as %20.