mybdd:~# CREATE USER 'haproxy'@'192.168.1.10';

# tail /etc/haproxy/haproxy.cfg

listen galera 192.168.1.10:3306
     balance source
     mode tcp
     option tcpka
     option mysql-check user haproxy
     server node1 192.168.1.1:3306 check weight 1
     server node2 192.168.1.2:3306 check weight 1
     server node2 192.168.1.3:3306 check weight 1