Amazon RDS for MySQL: MySQL 8.4 end of standard support

Once MySQL 8.4 reaches its RDS end of standard support date (31 Jul 2029), Amazon RDS automatically enrolls DB instances and DB clusters in RDS Extended Support, unless that was disabled. Charges begin the day after that date.

• Amazon RDS then automatically upgrades a DB instance to the last minor version released before that date, unless it already runs that version.
• RDS Extended Support includes security updates for critical and high CVEs and bug fixes for critical issues.
• If enrollment is disabled after that date, the instance or cluster upgrades automatically to the next supported major version.
• A fee applies: see Amazon RDS for MySQL pricing.

1. Test the upgrade first: create a DB snapshot of the DB instance, restore it to a new DB instance, and start a version upgrade on that new instance.
2. Find the valid upgrade targets for the DB instance in the AWS Management Console or with the aws rds describe-db-engine-versions AWS CLI command.
3. If the DB instance uses read replicas, upgrade all of the read replicas before the source instance.
4. Start the major version upgrade by modifying the DB instance, after following Major version upgrades for RDS for MySQL.
5. Downtime for the major version upgrade can be reduced with a blue/green deployment: Using Amazon RDS Blue/Green Deployments for database updates.
6. The RDS Extended Support charge stops after an upgrade to an engine version that is covered under standard support, and restarts if that target version later enters RDS Extended Support. See Amazon RDS Extended Support charges.