How to get IP address of the launched instance with Boto

8
votes

I am launching instance in openstack using boto

myinstance = conn.run_instances('ami-0000007d',min_count=1,max_count=1, instance_type = 'm1.small')

newmachine=myinstance.instances[0]

newMachine has the info related to the launched instance. I have tried 

vars(newmachine)

and the ip_address and private_ip_address of variables are empty. How can I obtain the ip_address of the launched instance ?

1
pythonamazon-ec2botoopenstack

1 Answers

13
votes

Refresh the value until the instance enters Running state. At that point, the IP should be present (not that there's anything you could do with the IP before the instance is in running state).

reservation = conn.run_instances(...)

instance = reservation.instances[0]

while instance.update() != "running":
    time.sleep(5)  # Run this in a green thread, ideally

print instance.ip_address