As mentioned in the AWS discussion forum back in October, Amazon has started the end of life (EOL) process for RDS MySQL version 5.5. What this means is:
- AWS will upgrade RDS instances to MySQL 5.7 starting February 9 2021 00:00 UTC during your next defined maintenance window, provided you have one.
- If you don’t have a maintenance window defined, RDS will automatically upgrade you on March 9 00:00 UTC and there is no opt-out.
As any seasoned administrator knows, upgrades can be painful and things might go wrong.
I think we can safely assume that the upgrade will be performed in-place, as it would be too complex and time-consuming otherwise. Since a direct upgrade from 5.5 to 5.7 is not supported, we need to go through 5.6 first. This means instances need to be restarted twice; first to go from …[Read more]