Experiencing False Alerts for Metric Alerts on Log Analytics workspaces - 03/10 - Resolved

[Azure-Monitor-Team]

Final Update: Wednesday, 10 March 2021 19:38 UTC

We've confirmed that all systems are back to normal with no customer impact as of 03/10, 18:00 UTC. Our logs show that the incident started on 03/08, 20:00 UTC and that during the 1 day & 22 hours that it took to resolve the issue some of the customers experienced missed or misfired alerts when using Azure Metric Alert rules on Log Analytics resources in West Europe region.

• Root Cause: The failure was due to a misconfiguration of a backend dependency.
• Incident Timeline: 1 day & 22 hours - 03/08, 20:00 UTC through 03/10, 18:00 UTC

We understand that customers rely on Metric Alerts as a critical service and apologize for any impact this incident caused.

-Saika

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Update: Wednesday, 10 March 2021 16:56 UTC

Root cause has been isolated to a misconfiguration of a backend dependency. Engineers are currently working hard to resolve this issue. Some customers may experience missed or misfired alerts when using Azure Metric Alert Rules on Log Analytics resources in West Europe region.

• Work Around: None
• Next Update: Before 03/10 20:00 UTC

-Saika

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Initial Update: Wednesday, 10 March 2021 13:44 UTC

We are aware of issues within Metric Alerts on Log analytics workspaces and are actively investigating. Some customers may experience missing or misfired alerts when using Azure Metric Alert Rules on Log Analytics resources.

• Work Around: none
• Next Update: Before 03/10 16:00 UTC

We are working hard to resolve this issue and apologize for any inconvenience.
-Soumyajeet

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