options:
  cluster_name:
    default: auto
    type: string
    description: Unique clustername that will default to the service name if value is auto.
  volume_name:
    default: brick
    type: string
    description: GlusterFS volume name.
  export_dir:
    default: /mnt
    type: string
    description: Directory to be exported.
  listen_port:
    default: 6996
    type: int
    description: Default listen port for glusterfsd.
  mode:
    default: distributed
    type: string
    description:  Operating mode [ distributed, replicated, striped ]
  protocol:
    default: gluster
    type: string
    description: Protocol to access the gluster volumes [ gluster, nfs, cifs ]