metadata/service/master/cluster.yml

applications:
- galera
parameters:
  _param:
    galera_server_cluster_name: galeracluster
    galera_server_bind_address: ${_param:cluster_local_address}
    galera_server_bind_port: 3306
    galera_server_admin_user: root
  galera:
    master:
      enabled: true
      name: ${_param:galera_server_cluster_name}
      bind:
        address: ${_param:galera_server_bind_address}
        port: ${_param:galera_server_bind_port}
      maintenance_password: ${_param:galera_server_maintenance_password}
      admin:
        user: ${_param:galera_server_admin_user}
        password: ${_param:galera_server_admin_password}
      members:
      - host: ${_param:cluster_node01_address}
        port: 4567
      - host: ${_param:cluster_node02_address}
        port: 4567
      - host: ${_param:cluster_node03_address}
        port: 4567
  mysql:
    server:
      users:
      - name: haproxy
        host: localhost
      - name: haproxy
        host: '%'
      - name: haproxy
        host: ${_param:cluster_local_address}