Retirement notice: Transition to DCR-based custom log ingestion by 13 September 2026

Question

Hi team,

Scope : To understand about the MS Service Health Advisory Alert : "Retirement notice: Transition to DCR-based custom log ingestion by 13 September 2026"

Can someone from the community help on the above alert ? What should be done and does it require any downtime ?Please share me the details. I'm available on teams call as well if possible we can connect. Thanks in advance.

Answer 1

Hi ,

Thanks for reaching out to Microsoft Q&A.

What Needs to Be Done?

1. Identify Impacted Resources:
   • Check if you are using the legacy custom log ingestion method.
   • Review your existing custom log configurations in log analytics workspaces.

Plan the Transition:

• Transition from the legacy method to DCR-based ingestion.
• Use the Azure Portal, ARM templates, Bicep, or Terraform to define and deploy DCRs.

1. Test the Migration:
   • Create and validate a Data Collection Rule for your current log sources in a test environment. Confirm that logs are ingested correctly using DCR.

Update Documentation and Processes:

• Update internal documentation to reflect the DCR-based custom log ingestion setup.
• Train relevant teams on managing DCRs if required.

Monitor and Optimize:

• Post-migration, monitor log ingestion using Azure Monitor metrics to ensure no disruption.

Does It Require Downtime?

• No downtime is typically required, as you can configure DCRs in parallel with the legacy setup. Ensure that ingestion is tested and validated before switching entirely to DCR-based ingestion.

Key Benefits of DCR-Based Ingestion

• Granular control over data collection and routing.
• Scalable and efficient log ingestion framework.
• Simplified management for custom log ingestion.

Next Steps

1. Review the official documentation on DCR-based ingestion:
   • https://learn.microsoft.com/en-us/azure/azure-monitor/essentials/data-collection-rule-overview
2. Reach out to Microsoft Support or your azure representative for personalized assistance.

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