>>> from cassandra.cluster import Cluster
>>> from cassandra.auth import PlainTextAuthProvider
>>> auth_provider = PlainTextAuthProvider(username='username', password='password')
>>> cluster = Cluster(['us-west-2_ip'], auth_provider=auth_provider)
>>> session = cluster.connect()
>>> for host in cluster.metadata.all_hosts():
...     print host.is_up, host._datacenter
...
None us-east
True us-west-2
None us-east
True us-west-2
None us-east
True us-west-2
>>>