updated deployment

deploy.py

from fabric.api import *
from fabric.operations import *
from fabric.colors import *
import boto

machines = [("prod1.globuscs.info", "i-c248f4a0"), ("prod2.globuscs.info", "i-e3a80680"), ("prod3.globuscs.info", "i-05403a66")]

if __name__ == "__main__":
    elb_conn = boto.connect_elb()
    elbs = dict([(elb.name, elb) for elb in elb_conn.get_all_load_balancers()])
    for machine_name, machine_id in machines:
        print(blue("Removing machine from ELBS"))
        for name in ['graph-api-prod', 'www-prod-globusonline-org', 'birn-migration-production']:
            elb_conn.deregister_instances(name, [machine_id])
        print(blue("Machine removed from ELBS"))
        env.host_string = machine_name
        sudo('chef-client')
        print(green("Opening shell for remote testing.  Exit after testing"))
        open_shell()
        success = prompt(green("Was the deploy successful (yes/no) ?"))
        if success.lower() != 'yes':
            print(red("Deploy cancelled because of failure on: {0}.  Machine is not in the load balancers.".format(machine_name)))
            sys.exit(1)
        print(blue("Adding machine to ELBS"))
        for name in ['graph-api-prod', 'www-prod-globusonline-org', 'birn-migration-production']:
            elb_conn.register_instances(name, [machine_id])
        print(blue("Machine added to ELBS"))
        print(blue("Deployment Complete"))