SigNoz is an open-source APM. It helps developers monitor their applications & troubleshoot problems, an open-source alternative to DataDog, NewRelic, etc.

SigNoz Community

There are two things you would have to do for self-hosting
1. Run the main SigNoz backend installation. This requires running several containers.
2. Instrument &amp; collect and send data to SigNoz installation - this step only requires running an optional agent. You can also send data directly main SigNoz installation. 
Please share more details about what you are trying to monitor?