Connect to a MySQL Galera Cluster

We are trying to make CloudStack to work with a Galera two node
master/master cluster. We have a NetScaler doing DataStream LB in front
of the cluster, and we have two CloudStack management servers in
active/active.

Anyone had success with this kind of scenario? As soon as I shut a MySQL
node, the CloudStack JDBC panics, and the management server fence
themselves. Why this is happening? Is there any way to handle database
failures in HA fashion? Any large cloud providers using CloudStack
handle this?

Thanks.