Hi Yuan, I have not seen an issue like this before and have never had it reported, either. Unfortunately, the code only logs an exception on send to kafka as debug so it won’t show up in the standard configuration. I will submit a patch to change that, but you will have to upgrade to get that change. I’m sorry, but I have no suggestions on how to make this more reliable except ensure you kafka is running in a high availability configuration.
Craig Bryant HPE From: Monasca <monasca-bounces+craig.bryant=hpe....@lists.launchpad.net<mailto:monasca-bounces+craig.bryant=hpe....@lists.launchpad.net>> on behalf of "yuan....@t-systems.com<mailto:yuan....@t-systems.com>" <yuan....@t-systems.com<mailto:yuan....@t-systems.com>> Date: Friday, January 12, 2018 at 11:36 AM To: "Hochmuth, Roland M" <roland.hochm...@hpe.com<mailto:roland.hochm...@hpe.com>> Cc: "bradley.kl...@charter.com<mailto:bradley.kl...@charter.com>" <bradley.kl...@charter.com<mailto:bradley.kl...@charter.com>>, "monasca@lists.launchpad.net<mailto:monasca@lists.launchpad.net>" <monasca@lists.launchpad.net<mailto:monasca@lists.launchpad.net>> Subject: [Monasca] alarm transition events are missing in kafka queue - mysql alarm state is updated properly Hi Roland, This is Yuan Pen from Deutsche Telekom. I am sending this email to the monasca community asking for help on monasca threshold engine. We have found that when sometime alarm state transitions happened, the threshold engine updated mysql alarm state properly, but failed to put state transition events in kafka queue (alarm-state-transitions). Does this ring a bell to anyone in the community? If this is a real problem, is there anything we can do to make sure the event in transition queue and state in mysql is synched? Any comments or help are greatly appreciated. Best Regard, Yuan Pen 571-594-6155
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