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I've been running it for almost a year, using docker-compose. It seems rather unstable for me. Every week or so, Sentry will just stop handling incoming events, and the request queues just keep growing. And if you try to upload symbols in this state, it will pause forever when trying to process them. So I've got a script[0] I can run that will unbreak it, but I don't fully understand what it actually does (I cobbled that script together based on a GitHub issue[1] that described the same problem). The Sentry architecture is complicated and not trivial to debug.
When it works, it's pretty good. I'm using it with sentry-native on the application side, which uses Crashpad to capture stack traces of native binaries (x86/ARM, Windows/Mac/Linux, whatever). It often doesn't deduplicate events properly, and the stack trace qualities vary dramatically by platform. Sometimes the stack traces it provides are total nonsense, but it does allow downloading the minidump files, so I can dig at them in Visual Studio and see what's really going on. I have discovered and solved many real bugs using it, so I've put up with the frustrating stability issues.
[0] https://gist.github.com/tycho/4279ce2ca47b293a85696695968263...
[1] https://github.com/getsentry/self-hosted/issues/478
We used to run it self hosted, but the architecture is so bizarre we ended up switching to their SaaS offering. I tried advocating [0] for a leaner architecture for simpler setups + to run integration tests against... but it wasn't met with much enthusiasm.
I imagine 99% of installations (and certainly CI pipelines) would be fine with their wsgi webserver and sqlite instead of Clickhouse, Relay, memcached, nginx, Postgres, Kafka and a host of other services. I wanted to take a stab at this myself, but given the complexity of the system, uncertainty of being able to merge it back, and, last but not least, their license, I decided against it.
[0]: https://github.com/getsentry/sentry/issues/32794