istio.io/content/help/faq/metrics-and-logs/controlling-what-the-sidecar-reports.md

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How can I control the data being reported by the sidecar?	20

It is sometimes useful to exclude access to specific URLs from being reported. For example, you might wish to exclude some health-checking URLs. You can skip telemetry reports specific to certain URLs by excluding them using a match clause of the telemetry configuration such as:

{{< text yaml >}} match: source.name != "health" {{< /text >}}