elif opt == "-n" or opt == "--node" or opt == "--nodeid" or opt == "--node-id" or opt == "--node_id":
if os.path.exists(optval):
node_id = file(optval).read().strip()
elif opt == "-n" or opt == "--node" or opt == "--nodeid" or opt == "--node-id" or opt == "--node_id":
if os.path.exists(optval):
node_id = file(optval).read().strip()