NoHostAvailable: ('Unable to connect to any servers', {'**.**.**.**':
OperationTimedOut('errors=None, last_host=None',), '**.**.**.**':
OperationTimedOut('errors=None, last_host=None',)})

Database.history = Cluster(
    ip_list.split(","),
    auth_provider=PlainTextAuthProvider(
        username=u,
        password=p
    )
).connect(k)

import logging
logging.getLogger().addHandler(logging.StreamHandler())
logging.getLogger().setLevel(logging.DEBUG)