{
    "zones":
    [
	{
	    "zone": "SZ",
	    "region": "shengzhen"
	}
    ],
    "servers":
    [
	{
	    "server":"192.168.2.1",
	    "zone":"SZ",
	    "resources":
	    {
		"cpu": 100,
		"memory": 100000000000
	    }
	},
	{
	    "server":"192.168.2.2",
	    "zone":"SZ",
	    "resources":
	    {
		"cpu": 100,
		"memory": 100000000000
	    }
	}
    ],
    "units":
    [
	{"tenant":"t1", "cpu": 20, "memory": 1100000000, "zone": "SZ", "on_servers": ["192.168.2.1", "192.168.2.2"]},
	{"tenant":"t2", "cpu": 10, "memory": 2000000000, "zone": "SZ","on_servers": ["192.168.2.1"]},
	{"tenant":"t3", "cpu": 10, "memory": 2000000000, "zone": "SZ","on_servers": ["192.168.2.1"]},
	{"tenant":"t4", "cpu": 10, "memory": 2000000000, "zone": "SZ","on_servers": ["192.168.2.1"]},
	{"tenant":"t5", "cpu": 10, "memory": 2000000000, "zone": "SZ","on_servers": ["192.168.2.1"]}
    ]
}