In order to bootstrap your Galera cluster, manually bring up the cluster IP address on the desired interface. In this example, we'll use 192.168.122.99 and eth1:

ip address add 192.168.122.99/24 dev eth1 label eth1:galera

And initialize the Galera cluster:

mysqld --wsrep_cluster_address=gcomm:// &

Note the empty gcomm:// address.

An avalanche of output is likely to follow. Near the end, you should see entries similar to these:

[Note] WSREP: Synchronized with group, ready for connections
[Note] mysqld: ready for connections.

At this point, your MySQL/Galera cluster is properly initialized. It only has one node, and it is not under cluster management yet, but it's already a working Galera installation.


This article originally appeared on the hastexo.com website (now defunct).