'Start cluster configuration'

def run(self, nodes, master, user, user_shell, volumes):

    self._nodes = nodes
    self._master = master
    self._user = user
    self._user_shell = user_shell
    self._volumes = volumes
    self._setup_hostnames()
    self._setup_ebs_volumes()
    self._setup_cluster_user()
    self._setup_scratch()
    self._setup_etc_hosts()
    self._setup_nfs()
    self._setup_passwordless_ssh()
