Percona XtraDB Cluster (PXC): How many nodes do you need?mariadb, mysql, percona
A question I often hear when customers want to set up a production PXC cluster is: “How many nodes should we use?”
Three nodes is the most common deployment, but when are more nodes needed? They also ask: “Do we always need to use an even number of nodes?”
This is what we’ll clarify in this post.