Experiencing Data Access Issue in Azure portal for Log Analytics - 11/05 - Resolved

Published Nov 05 2021 03:30 AM 1,614 Views
Final Update: Friday, 05 November 2021 10:21 UTC

We've confirmed that all systems are back to normal with no customer impact as of 11/05, 09:15 UTC. Our logs show the incident started on 11/05, 8:00 UTC and that during the 1 hour and 15 minutes that it took to resolve the issue. Customer using Azure Log Analytics, Log Search and/or Sentinel in West Central US who may have experienced intermittent query failures and delayed or missed alerts.
  • Root Cause: The failure was due to some instances of a backend service became unhealthy, causing the aforementioned delays and preventing requests from completing. 
  • Incident Timeline: 1 Hour & 15 minutes - 11/05, 08:00 UTC through 11/05, 09:15 UTC
We understand that customers rely on Azure Log Analytics, Log Search and/or Sentinel as a critical service and apologize for any impact this incident caused.

-Mohsin Inamdar

%3CLINGO-SUB%20id%3D%22lingo-sub-2930670%22%20slang%3D%22en-US%22%3EExperiencing%20Data%20Access%20Issue%20in%20Azure%20portal%20for%20Log%20Analytics%20-%2011%2F05%20-%20Resolved%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2930670%22%20slang%3D%22en-US%22%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CU%3EFinal%20Update%3C%2FU%3E%3A%20Friday%2C%2005%20November%202021%2010%3A21%20UTC%3CBR%20%2F%3E%3CBR%20%2F%3EWe've%20confirmed%20that%20all%20systems%20are%20back%20to%20normal%20with%20no%20customer%20impact%20as%20of%2011%2F05%2C%2009%3A15%20UTC.%20Our%20logs%20show%20the%20incident%20started%20on%2011%2F05%2C%208%3A00%20UTC%20and%20that%20during%20the%201%20hour%20and%2015%20minutes%20that%20it%20took%20to%20resolve%20the%20issue.%20Customer%20using%20Azure%20Log%20Analytics%2C%20Log%20Search%20and%2For%20Sentinel%20in%20West%20Central%20US%20who%20may%20have%20experienced%20intermittent%20query%20failures%20and%20delayed%20or%20missed%20alerts.%3CBR%20%2F%3E%3CUL%3E%3CLI%3E%3CU%3ERoot%20Cause%3C%2FU%3E%3A%20The%20failure%20was%20due%20to%20some%20instances%20of%20a%20backend%20service%20became%20unhealthy%2C%20causing%20the%20aforementioned%20delays%20and%20preventing%20requests%20from%20completing.%26nbsp%3B%3C%2FLI%3E%3CLI%3E%3CU%3EIncident%20Timeline%3C%2FU%3E%3A%201%20Hour%20%26amp%3B%2015%20minutes%20-%2011%2F05%2C%2008%3A00%20UTC%20through%2011%2F05%2C%2009%3A15%20UTC%3C%2FLI%3E%3C%2FUL%3EWe%20understand%20that%20customers%20rely%20on%20Azure%20Log%20Analytics%2C%20Log%20Search%20and%2For%20Sentinel%20as%20a%20critical%20service%20and%20apologize%20for%20any%20impact%20this%20incident%20caused.%3C%2FDIV%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CBR%20%2F%3E-Mohsin%20Inamdar%3CBR%20%2F%3E%3C%2FDIV%3E%3CHR%20style%3D%22border-top-color%3Alightgray%22%20%2F%3E%3C%2FDIV%3E%3C%2FLINGO-BODY%3E
Version history
Last update:
‎Nov 05 2021 03:30 AM
Updated by: