Sentry is technically self-hostable, but they provide no deployment guidance beyond running the giant blob of services/microservices (including instances of postgres, redis, memcache, clickhouse, and kafka) as a single docker-compose thing. I get why they do this and think it's totally reasonable of them, but Sentry is a very complicated piece of software and takes substantially more work IME to both get up and running and maintain compared to other open-source self-hosted observability/monitoring/telemetry software I've had the pleasure of working with.
Yeah, it works for a time, but they don't support on-premise versions and they don't offer a Helm chart install, its all community based.
I tried it for well over a year, and there are so many moving parts and so many "best guesses" from the community that we had to rip it out. There's a lot of components, sentry, sentry-relay, snuba, celery, redis, clickhouse, zookeeper (for clickhouse), kafka, zookeeper (for kafka), maybe even elasticsearch for good measure. It did work for a time, but there are so many moving parts that required care and feeding it would inevitably break down at some point.
Problem is I can't ship data to their SaaS version because we have PHI and our contracts forbid it, even if scrubbed, so I had to settle on OTEL.
PostHog and Rudderstack say the same things. They're not really self hosted. But that's the rub, if someone authored a good operator for Sentry, Sentry as a commercial service would cease to exist. That's not good in my opinion, they do real innovative stuff.
It's tough. We should have never done "give away the software, charge for hosting." The market, in every sense, has been telling you that you're really building value for AWS, for years, by doing that.
Although I do not like those licences, I would not care so much about 2yrs until it goes FOSS. Before all this rush development RRDTool and OpenTSDB was so slow, this whole thing seems rather ideological than substantial criticism. Now going down the licence rabbit hole based to criticise the original argument seems like a classical strawman.
I've been using GlitchTip https://glitchtip.com with the Sentry SDKs and I couldn't be happier. Completely self-hosted, literally just the container and a db, requires zero attention.