start an AWS image, display the ssh command line to access it, and clean up afterwards

aws-linux-instance.py

#!/usr/bin/python -u
import boto.ec2
import time
import subprocess

# debian-wheezy-amd64-pvm-2014-09-26-ebs - ami-3051f047
# ubuntu/images/hvm-ssd/ubuntu-trusty-14.04-amd64-server-20140927 - ami-f0b11187
instance = "ami-3051f047"

conn = boto.ec2.connect_to_region("eu-west-1")

res = conn.run_instances( instance, key_name='dh3awskey',
        instance_type='t1.micro',
        security_groups=['ssh only'])

inst = res.instances[0]

print "waiting for instance", inst.id, "to start",

while True:
    time.sleep(2)
    s = conn.get_all_instance_status(instance_ids=[inst.id])
    if len(s) == 0:
        print ".",
        continue
    s = s[0].instance_status.status
    print ":",
    if s == "ok":
        break
print

hostname = conn.get_only_instances(instance_ids=[inst.id])[0].public_dns_name
print "instance hostname is", hostname
print "ssh -o StrictHostKeyChecking=no -i ~/.ec2/dh3awskey.pem admin@" + hostname
raw_input("press Enter to terminate instance...")

conn.terminate_instances(instance_ids=inst.id)