Downgrade Percona Server for MySQL¶
A downgrade from Percona Server for MySQL 8.0 to 5.7 is not supported.
A downgrade from a Percona Server for MySQL 8.0 version to an earlier 8.0 version is not supported.
Percona does not test a downgrade operation between versions.
Each release of Percona Server for MySQL 8.0 can contain significant changes that are not backward-compatible. Restoring a backup to an earlier version may fail, for example, if your code uses a feature that does not exist in an earlier version.
Before you upgrade to the latest release, do the following:
Make a full backup of your data and test the backup
Thoroughly test in a staging environment