We've confirmed that all systems are back to normal with no customer impact as of 08/20, 12:12 UTC. Our logs show the incident started on 08/20, 09:15 UTC and that during the 2 hours 57 minutes that it took to resolve the issue ~19% customers using Log alerts which are configured in West Europe region might have experienced Alerting failure issues.
Root Cause: The failure was due to issues in one of our backend services.
Incident Timeline: 2 Hours 57 minutes - 8/20, 09:15 UTC through 8/20, 12:12 UTC
We understand that customers rely on Log Search Alerts as a critical service and apologize for any impact this incident caused.
Initial Update: Tuesday, 20 August 2019 11:29 UTC
We are aware of issues within Log Search Alerts and are actively investigating. Some customers in the West Europe region may experience intermittent alerting failures.
Work Around: None
Next Update: Before 08/20 13:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience. -Anmol