Nagstamon crashes while rechecking an icinga2 service if the servicename contains a % sign about nagstamon HOT 23 CLOSED

Strange, really strange. I will try to reproduce this.

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@coolburner1337 kind of good news... the problem does not only occur on % services... at least with the demo server https://livedemos.mjs.de/icingaweb2.
Other findings are:

• the line 371 in IcingaWeb2.py, the one before the crash, tries to find the ID IcingaModuleMonitoringFormsCommandObjectCheckNowCommandForm in the Icinga output but this one is not existent. Looks like someone changed something at the Icinga side.
• Even worse from a Nagstamon perspective - all IDs have some random suffix which makes it harder to find them.
• The used demo server uses 2.11.4, so your impression that it lasts longe is absolutely correct.

So investigations go further...

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Please check the latest testing release.

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Hi, the issue still persists even with the latest version "Nagstamon-3.13-20240108-win64_setup.exe" :-(

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Can you please try the debugging version https://github.com/HenriWahl/Nagstamon/releases/download/latest/Nagstamon-3.13-20240108-win64_debug.zip to get some console output?

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The console output is either:

Traceback (most recent call last):
File "Nagstamon\QUI_init_.py", line 4301, in recheck
File "Nagstamon\Servers\Generic.py", line 413, in set_recheck
File "Nagstamon\Servers\IcingaWeb2.py", line 372, in _set_recheck
AttributeError: 'NoneType' object has no attribute 'findNext'

Or:

Traceback (most recent call last):
File "Nagstamon\QUI_init_.py", line 4334, in recheck_all
File "Nagstamon\Servers\Generic.py", line 413, in set_recheck
File "Nagstamon\Servers\IcingaWeb2.py", line 372, in _set_recheck
AttributeError: 'NoneType' object has no attribute 'findNext'

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@HenriWahl:
Do you have any idea on fixing that?
That would be nice! :-)

Thank you!

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Can you send me the whole console output please?

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@HenriWahl : Or do you mean something else?

Kind regards

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@coolburner1337 no, thanks, I just hoped there would be more info but well, so this must be enough. 👍

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Does it actually work if there is no % in the service name? The fn part is, that the form name IcingaModuleMonitoringFormsCommandObjectCheckNowCommandForm which is lookded for and not found only exists in the Nagstamon codebase - I did not found any other trace of it.

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Maybe it works with one of the other Icinga plugins in Nagstamon?

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Does it actually work if there is no % in the service name?

Yes, it does. We have over 1000 services in Icinga and only the ones with a % in the service name make Nagstamon crash on recheck.

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Maybe it works with one of the other Icinga plugins in Nagstamon?

I'll give it a try.

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Sadly I'm not able to use the other Icinga plugins in Nagstamon. So the issue persists for me.

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Just in case: you are allowed to recheck services on the monitoring Incinga2 Server?

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And: What version of IcingaWeb2 do you use?

Update: I tested with https://icinga.com/demo, which uses Icinga 2.12.0 and there I only can connect via IncingaDB, not via IcingaWeb2. The latter seems to be somehow deprecated?

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Just in case: you are allowed to recheck services on the monitoring Incinga2 Server?

Of cource we are! We are using the tool since years and everthing works fine, except then the icinga service name includes an %-sign ;-)

Actually we are using Icinga Version 2.14.1 with Icingaweb2 Version 2.12.1 -- so newer then icinga.com himself :-P -- and the connection works in Nagstamon.

We try to keep our Icinga environment and Nagstamon always up to date. So we face this issue with the %-sign since several versions of Icinga and Nagstamon. (Only that you know, this is not a new issue!)

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Maybe you could send me the plain HTML of a Service status page or wherever in Icinga webinterface it is possible to trigger a recheck?

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@HenriWahl : Hi, thanks for your investigation!
To your question... This kind of recheck works for us:

Do you need the plain HTML of this complete site, or?

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Yes, this would be great. You could redact it or send as mail to [email protected] if you would not like to see its content here.

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Please check latest release 3.13-20240221.

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