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

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<https://signoz.io/docs/monitor-http-endpoints/>

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Look at your threshold configuration. You have set _fire alert if the metric is equal to 1 at least once._

but in metric alert configuration only one "at least once" option will be available with PromQL

One more help, Is it possible opentelemetry metrics from otel collector to prometheus?

how to exporting Otel Collector Metrics to Prometheus Server

<https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/prometheusexporter>