Hi there, I'm hoping someone can give me an answer to a couple of questions re: flapping detection. We've recently switched over from Nagios to Icinga2 and I've noticed that flapping detection is turned off by default in Icinga. After some googling I found https://dev.icinga.org/issues/6868 but that doesn't really give much of a why, nor does it give any guidance as to whether it should be left as disabled or not.
Additionally using icingaweb2 and looking at the history for a host I see ok, up, down, critical and comment messages logged, but there's no log of when a host started or ended flapping. Looking at https://github.com/Icinga/icingaweb2/blob/068bfc0c712443a3588fdf72b27d7e009a1e669e/modules/monitoring/application/views/scripts/show/history.phtml it would appear the code has case statements to handle flapping data though. Is this a configuration setting I'm missing to enable these to appear? Finally I had only enabled some users to enable Up and Down alerts from hosts. However I got complaints that people were getting down notifications but not up sometimes. Looking into this I saw the following message chain: PROBLEM - Host1 is DOWN FLAPPINGSTART- Host1 is UP FLAPPINGEND- Host1 is UP What never seemed to be generated was a normal RECOVERY - Host1 is UP message, would it be that the host going into flapping state caused the generation of the recovery notification to be supressed? Cheers, Luke Luke Whitworth Business Technologies Specialist, IS Building 3, W: www.cranfield.ac.uk E: luke.whitwo...@cranfield.ac.uk T: +44 (0)1234750111 x3556 This email and any attachments to it may be confidential and are intended only for the named addressee. If you are not the named addressee, please accept our apology, notify the sender immediately and then delete the email. We request that you do not disclose, use, copy or distribute any information within it. Any opinions expressed are not necessarily the corporate view of Cranfield University. This email is not intended to be contractually binding unless specifically stated and the sender is an authorised University signatory. Whilst we have taken steps to ensure that this email and all attachments are free from any virus, we advise that, in keeping with good computing practice, the recipient should ensure they are actually virus free.
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