Simple script to fetch an ssh host key.

fetch_hostkey.py

#!/usr/bin/env python2.7
"""Usage: fetch_hostkey.py <host> [<port>]"""
import paramiko, docopt

opt = docopt.docopt(__doc__)
host = opt['<host>']
port = int(opt['<port>'] or 22)

t = paramiko.Transport((host, port))
t.connect()
k = t.get_remote_server_key()
t.close()

kh_line = "%s %s %s" % (host, k.get_name(), k.get_base64())
print(kh_line)