We are observing errors during Endpoint target registration (and de-registration)
Running apps and databases are not affected, but app deployment, restart, and configuration operations are likely to time out. To ensure there's no downtime as a result of these timeouts, we've temporarily suspended these operations while we wait for the underlying problem to resolve.
Our upstream provider (AWS ELB) has reported that they are aware of the issue (
https://status.aws.amazon.com/). We are in contact with them to understand the ETA for resolution.