self-hosted

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This removes the need for zookeeper in self-hosted. We attempted to do this previously, but it would result in data loss in kafka so holding that off until a later date where it's safe to perform.

Relvant PR's: https://github.com/getsentry/self-hosted/pull/2445 https://github.com/getsentry/self-hosted/pull/2500

I'd vote for Redpanda instead. It should be compatible enough to Kafka API, unless Sentry is using weird features that only exists after Kafka v3.1 onwards, as Redpanda's compatibility is between v0.11.0 to v3.1 (see docs). Although, we'd need to create a migration between existing Kafka to Redpanda. The steps that I can think of is:

1. Create new volume for sentry-redpanda
2. Consume every message on Kafka, re-publish it on Redpanda.
3. On finish, don't delete the sentry-kafka volume. Let it as is until there is no further issue.
4. Stop the Kafka container, replace the Docker image on Kafka to be Redpanda (so the hostname still be "kafka").

Or, as an alternative, they have this one: https://docs.redpanda.com/current/upgrade/migrate/data-migration/

The reason behind "using Redpanda" is to minimize the heavy resource consumed by the JVM. Redpanda is far lightweight than Kafka, I've been using it on production (3 node cluster) for around 18 months.

We'd like to be as similar to SaaS as we can be. Right now, Clickhouse versions are way behind and are introducing issues in self-hosted that are not seen in SaaS (one here!). I fear that with introducing Redpanda, there will be an additional burden of maintenance placed on us since other Sentry developers will be on a different platform.

@hubertdeng123 So.. is this still on the timeline? And is there anyway the community can know what version of ClickHouse / Postgres / Kafka the SaaS instance is running, in order to keep it pretty much the same for self-hosted?

I can confirm that Sentry can work with Redpanda. Connected without any issues; everything is working.

I fear that with introducing Redpanda, there will be an additional burden of maintenance placed on us since other Sentry developers will be on a different platform.

While I am unaware of the technical requirements of this, What about migrating both SaaS and Self-Hosted to redpanda. Wouldn't there be cost savings in SaaS by reducing system resources while increasing throughput?

Since https://github.com/getsentry/self-hosted/pull/3263 got merged there is no more need for a zookeeper @aldy505 can you open a PR with your existing red panda work please? It works since months for me

@aldy505 can you open a PR with your existing red panda work please? It works since months for me

I'm gonna get back to you later. I'm planning to do some kind of A/B testing of using Redpanda vs Kafka KRaft.

I'm on 24.8.0 with Redpanda and it still works fine.