Sentry's email alert do not send

[PJeBeK]

Hey there!

I ran a self-hosted sentry on swarm. I don’t receive email for alerts. But, email for inviting new member send properly.
I think that post-process-forwarder is causing problem. Because, the commit log topic receives messages from snuba consumers but the sentry.tasks.post_process.post_process_group is empty.
This is the post-process-forwarder’s logs:

21:47:42 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'events-consumer', ignoring...
21:47:42 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'sessions-consumer', ignoring...
21:47:43 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'outcomes-consumer', ignoring...
21:47:43 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'transactions-consumer', ignoring...
21:47:43 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'events-consumer', ignoring...
21:47:43 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'sessions-consumer', ignoring...
21:47:44 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'sessions-consumer', ignoring...
21:47:44 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'transactions-consumer', ignoring...
21:47:44 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'outcomes-consumer', ignoring...
21:47:44 [DEBUG] sentry.eventstream.kafka.consumer: Received consumer offsets update from 'events-consumer', ignoring...

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[PJeBeK]

I find the problem. I had to pass the snuba-consumer’s consumer group to post-process-forwarder by --synchronize-commit-group argument. So, the post-process-forwarder doesn’t ignore events-consumer anymore. This solve the email alert problem. Still, post-process-forwarder ignores the sessions-consumer, outcomes-consumer, and transactions-consumer. Should I do anything for them?
Also, before doing this change, sentry doesn’t show anything in performance section. But now, it is fixed, and we can track performance of our services.

[BYK]

Which version of Sentry are you using and is your setup based on our GitHub - getsentry/onpremise: Sentry On-Premise setup repo or custom? Asking as I’m first trying to understand whether this is a bug on our default configuration or something specific to your setup.

[PJeBeK]

I am using Sentry 21.2.0 and my setup is custom because I use docker swarm instead of docker-compose.

[PJeBeK]

I find that I defined consumer-group for some snuba consumer services which do not need it. I sync these services with official repo and everything work properly. And also, post-process-forwarder logs gone away.