Front Door Log Analytics Workspace Cost

Casey 0 Reputation points
2024-09-13T16:04:11.34+00:00

Hi,

I have a question about Diagnostic Settings in Azure Front Door Premium.

Currently the Azure Front Door Premium resource has Diagnostic Settings configured to use Log Analytic Workspace and its costing nearly one third of our total Azure spend. So I need to see what options I have I reduce this cost.

We only require a 30 day retention period. Nearly, if not all our log checking is done via the "Logs" option under "Front Door and CDN profile" -> "Monitoring" -> "Logs" (We are not directly opening the Log Analytic Workspace.

As we only retain the data for 30 days, we don't have any storage charges, however we do have very high Analytics Logs data ingestion charge. While Basic Logs data ingestion is far cheaper per GB but is at 0 usage. Is there another option available so we only use Basic Ingestion?

To give you an idea of how the data is being used.

  • Alert threshold when we exceed XX amount of requests.
  • Queries on resource providers:
    • ResourceProvider == "MICROSOFT.CDN" and Category == "FrontDoorAccessLog"
    • where ResourceProvider == "MICROSOFT.CDN" and Category == "FrontDoorWebApplicationFirewallLog

I feel there is a configuration error around the logging, purely due to its costs.

Azure Front Door
Azure Front Door
An Azure service that provides a cloud content delivery network with threat protection.
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Azure Cost Management
Azure Cost Management
A Microsoft offering that enables tracking of cloud usage and expenditures for Azure and other cloud providers.
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