Setting up a cluster
This section discusses how to set up a cluster. However, let's first discuss the requirements of a cluster.
Requirements
As mentioned earlier, all cluster nodes must run on Linux systems.
There are no particular hardware requirements; in fact, if a server can smoothly run a standalone MariaDB server, it can also run on a Galera node. During normal operations, the additional amount of memory used for a Galera replication is minimal and wouldn't make much of a difference. The only exception is that the copying of the entire database from one node to another consumes a lot of memory. This happens when a new node joins the cluster, or when a disconnected node rejoins the cluster. However, when choosing the hardware of individual ...
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