Avoid 'service mysql <start|restart>' with Galera

If you e.g have changed a parameter in my.cnf, and subsequently do:

service mysql stop && service mysql start

or

service mysql restart

the Galera node in question, will not rejoin the Cluster immediately. It will be in state 'Initialized', but will after a while  be recovered by ClusterControl.

A better, faster way, is to stop the node (service mysql stop), and then let ClusterControl recover it. 

Also, check out the s9s-galera tool, that can be invoked from the command line and interfaces with ClusterControl, and allows you start/stop nodes, view status etc : 

git clone git://github.com/severalnines/s9s-admin.git
cd s9s-admin/cluster/galera/
cat README.s9s_galera
./s9s_galera