We recently covered Upgrading your Galera Cluster from MySQL 5.7 to MySQL 8.0. We’ve also had questions on how the upgrade path from our usual Galera Cluster “community” edition to the Galera Cluster Enterprise Edition (EE), which includes many new features, like XA transaction support, arm64 support or GCache encryption.
First off, let’s start by installing a Galera Cluster on CentOS 7. The reason we have picked this distribution? Let’s edit the /etc/yum.repos.d/galera.repo and add:
[galera4] name = Galera baseurl = https://releases.galeracluster.com/galera-4/centos/7/x86_64 gpgkey = https://releases.galeracluster.com/GPG-KEY-galeracluster.com gpgcheck = 1 [mysql-wsrep8] name = MySQL-wsrep baseurl = https://releases.galeracluster.com/mysql-wsrep-8.0/centos/7/x86_64 gpgkey = …