status and health of a Galera cluster
USAGE: galera-status [--help] [--batch] [MySQL options]
OPTIONS: --help this help
--batch all WSREP variables (output not formatted, no colors)
You can pass MySQL options. By default mysql will use config files, see 'mysql --help' and http://dev.mysql.com/doc/refman/5.5/en/option-files.html