Increased Error rates

4:41 PM PDT We are investigating increased API error rates for the RunInstances API in the EU-SOUTH-1 Region.

5:04 PM PDT We can confirm increased API error rates for the RunInstances API in the EU-SOUTH-1 Region. This is also affecting services that depend on EC2 such as Auto Scaling, and launches of service instances that are built on EC2, such as RDS and ElastiCache. Instances that are already launched are operating normally. We have identified the root cause and are actively testing a mitigation plan. We expect to have an update on the success of this mitigation effort in the next 30 minutes.

5:19 PM PDT Between 3:59 PM and 5:07 PM PDT customers experienced increased error rates for the EC2 RunInstances API in the EU-SOUTH-1 Region. This is also affected services that depend on EC2 such as Auto Scaling, and launches of service instances that are built on EC2, such as RDS and ElastiCache. The issue has been resolved and the RunInstances API is now operating normally. This issue only affected new instance launches, instances that were already running were not affected.