when I installed this package and configure /etc/default/garbd as below, it gave me that /etc/default/garbd is not configured yet message.
Copyright © 2012 Codership Oy
This config file is to be sourced by garb service script.
REMOVE THIS AFTER CONFIGURATION
A space-separated list of node addresses (address[:port]) in the cluster
Galera cluster name, should be the same as on the rest of the nodes.
Optional Galera internal options string (e.g. SSL settings)
Log file for garbd. Optional, by default logs to syslog
Deprecated for CentOS7, use journalctl to query the log for garbd