{
  "name": "hadoop_cluster_a",
  "description": "A small hadoop cluster with hbase",
  "version": "1.0",
  "servers": [
    {
      "name": "zookeeper-a, zookeeper-b, zookeeper-c",
      "description": "Zookeeper nodes",
      "template": "rhel-5.6-base",
      "service": "small",
      "port_rules": "2181",
    },
    {
      "name": "hadoop-master",
      "description": "Hadoop master node",
      "template": "rhel-5.6-base",
      "service": "large",
      "networks": "app-net, storage-net",
      "port_rules": "50070, 50030, 60010",
    },
    {
      "name": "hadoop-worker-a hadoop-worker-b hadoop-worker-c",
      "description": "Hadoop worker nodes",
      "template": "rhel-5.6-base",
      "service": "medium",
      "port_rules": "50075, 50060, 60030",
    }
  ]
}