Final Update: Sunday, 06 December 2020 19:44 UTC
We've confirmed that all systems are back to normal with no customer impact as of 12/6, 19:30 UTC. Our logs show the incident started on 12/6, 18:08 UTC and that during the 1 hour 22 minutes that it took to resolve the issue customers in Australia Central may have experienced data access issues which could have resulted in missed or false alerts.
- Root Cause: The failure was due to an upgrade to a back end service that failed. The system was rolled back to mitigate the issue.
- Incident Timeline: 1 Hours & 22 minutes - 12/6, 18:08 UTC through 12/6, 19:30 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.
-Ian