Raising a case with AWS Technical Support is the only way to identify if there was any issue occurred in the underlying hardware.
Most likely the hardware on the backend infrastructure has hit some issue - could be disk failure or node failure - check with AWS support by raising a case and find out the actual reason why.
Strange event for in Aurora RDSAccepted Answerasked 2 months ago
RDS went into recovery by itself?asked 10 days ago
RDS Instance stuck in rebooting (no connections)asked 6 months ago
EC2 instance rebooted by itselfAccepted Answerasked 3 years ago
Disaster Recovery in Elasticseachasked 7 months ago
RDS Snapshot export to S3 fails citing IAM role error where IAM role is created by Console itselfasked 2 months ago
Does Recovery of DB instance run automatically?Accepted Answerasked 3 months ago
What happens after failover in RDSAccepted Answerasked a month ago
Can I Import .sql files from Encrypted s3 bucket into Encrypted MySQL RDS instance?asked 2 months ago
[RDS, Aurora MySQL] Frequent "Recovery of the DB instance has started. Recovery time will vary with the amount of data to be recovered."asked 2 months ago