create an ephemeral node with kazoo (zookeeper) to add a server to a zookeeper based nameserver.

gistfile1.py

from netifaces import ifaddresses, AF_INET

def ip4_addresses():
    for interface in ['eth0', 'eth1', 'wlan0']:
        try:
            link = ifaddresses(interface)
            if AF_INET in link:
                return link[AF_INET][0]['addr']
        except ValueError:
            pass

def register_server(zk, node, port, additional_data=''):
    addr = ip4_addresses()
    path = '%s/%s:%s' % (node, addr, port)
    print path
    zk.create(path, json.dumps(additional_data) if additional_data else '', ephemeral=True)