Update a juju machine ip address

gistfile1.txt

How to run
==========

$ sudo pip install jujuclient
$ chmod 0755  update-juju-machine-ip.py
$ ./update-juju-machine-ip.py machine-0 10.5.0.125

update-juju-machine-ip.py

#!/usr/bin/env python
from __future__ import print_function

from jujuclient import Environment 
import sys 
import subprocess

class UpdateIP(Environment):
    def __init__(self, *args, **kwargs):
        Environment.__init__(self, *args, **kwargs)

    def set_machine_addresses(self, addresses):
        if not isinstance(addresses, list):
            addresses = [addresses]
        return self._rpc({
            'type': "Machiner",
            'version': 0,
            'request': "SetMachineAddresses",
            'params': {
                'MachineAddresses': addresses,
            }
        })

def main():
    if not len(sys.argv) > 2:
      print('Usage: %s machine-0 192.168.1.1' % sys.argv[0], file=sys.stderr)
      sys.exit(-1)

    env = UpdateIP.connect(subprocess.check_output(["juju", "env"]).rstrip('\n'))
    env.set_machine_addresses({
        'Tag': sys.argv[1],
        'Addresses': [ {'Type': "ipv4", 'Value': sys.argv[2], 'Scope': 'public'}],
    })

if __name__ == "__main__":
    main()