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

SigNoz Community

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&gt; After I login I do not see `Metrics` menu in the left side
There is no `Metrics` menu. It was renamed to `Services` . If you had come across some old reference, please share the link we will update it.

&gt; I would also like to know how can I either get the API key for SigNoz that I have installed or create a new one
What API keys are you referring. Is this a key for accessing SigNoz query-service API? It's available in the enterprise edition.