Workspace Transform Data Collection Rule for Log Analytics Workspace on Diagnosic Settings on (e.g. Azure FrontDoor)

steinfin 0 Reputation points
2026-10-02T09:45:48.0666667+00:00

I'm trying to setup a Diagnostic Setting on a Azure Front Door resource to emit logs to a Log Analytics Workspace. However the loglines may contain PII, and we host in Europe, so I want to cover my bases to be GDPR compliant - so I need to transform the lines on Ingestion.

AFAICT, the workspace transforms Data Collection Rules, can provide this functionality. I manage to transform log lines from Blob Storage which uses a dedicated table, but for Azure Front Door the log lines go to AzureDiagnostic Table, and the DCR rules applied for that Data Flow doesn't seem to apply.

  • Can one not perform data minimization on Azure FrontDoor resource diagnostic settings logs at all?
    • If not; is there any other mechanism than diagnostic settings on front door that allow us to log url redirection and caching?
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