update_instances.py

#!/usr/bin/env python

import boto.ec2
from boto.manage.cmdshell import sshclient_from_instance

def update_gcc_explorers():
    conn = boto.ec2.connect_to_region('us-east-1')
    reservations = conn.get_all_instances()
    for reservation in reservations:
        for instance in reservation.instances:
            if instance.state != 'running':
                print "Skipping {} instance {}".format(instance.state, instance.id)
                continue
            print "Connecting to", instance
            ssh_client = sshclient_from_instance(instance, "ec2-mattgodbolt.pem",
                    user_name='ubuntu')
            print "Connected. Running command"
            status, stdout, stderr = ssh_client.run('sudo -i docker pull mattgodbolt/gcc-explorer && sudo service gcc-explorer restart')
            print "Status", status
            print "Stdout", stdout
            print "Stderr", stderr
            print "Done"


if __name__ == '__main__':
    update_gcc_explorers()