With MySQL 8.0.20 currently installed on Ubuntu, I am unable to use Percona XtraBackup 2.3.7 due to breaking changes introduced in MySQL 8.0.20.
How can we downgrade MySQL 8.0.20 to 8.0.19 on Ubuntu, which I believe is the latest MySQL version currently supported by XtraBackup? dpkg-reconfigure mysql-apt-config
does not allow us to select a minor version.
Must the current data be backup using mysqldump before the downgrade, and restored using the dump after the downgrade?