By using AWS re:Post, you agree to the AWS re:Post Terms of Use

Why did my Amazon RDS DB instance fail over?

1 minute read
0

My Amazon Relational Database Service (Amazon RDS) DB instance failed over and I’m not sure why.

Short Description

If there's a planned or an unplanned outage for a Multi-AZ DB instance, Amazon RDS automatically switches to a standby replica or secondary instance in another Availability Zone. Depending on your database activity at the time of the outage, failover usually lasts between 60-120 seconds.

Resolution

To see if a failover has occurred, open the Amazon RDS console, and then choose Events from the navigation pane. Access events from the past 24 hours in the console. Or, use the describe-events command in the AWS Command Line Interface (AWS CLI). For more information, see Viewing Amazon RDS events.

Note: If you receive errors when running AWS CLI commands, make sure that you're using the most recent version of the AWS CLI.

There are several events that can cause a failover. When these types of unplanned outages occur, Amazon RDS monitors and identifies the issue. Then, Amazon RDS fails over automatically to minimize downtime.

Related Information

Best practices for Amazon RDS

AWS OFFICIAL
AWS OFFICIALUpdated a year ago