def create_launcher_instance(ec2_conn, cf_conn, stack_name, launcher_ami, launcher_instance_type):
launcher_instances = get_tagged_instances(ec2_conn, {"eggo_stack_name": stack_name, "eggo_node_type": "launcher"})
if len(launcher_instances) > 0:
print "Launcher instance ({instance}) already exists. Reusing.".format(
instance=launcher_instances[0].ip_address
)
return launcher_instances[0]
print "Creating launcher instance."
# see http://stackoverflow.com/questions/19029588/how-to-auto-assign-public-ip-to-ec2-instance-with-boto
interface = NetworkInterfaceSpecification(
subnet_id=get_subnet_id(cf_conn, stack_name),
groups=[get_security_group_id(cf_conn, stack_name)],
associate_public_ip_address=True,
)
interfaces = NetworkInterfaceCollection(interface)
reservation = ec2_conn.run_instances(
launcher_ami, key_name=get_ec2_key_pair(), instance_type=launcher_instance_type, network_interfaces=interfaces
)
launcher_instance = reservation.instances[0]
launcher_instance.add_tag("owner", getuser())
launcher_instance.add_tag("ec2_key_pair", get_ec2_key_pair())
launcher_instance.add_tag("eggo_stack_name", stack_name)
launcher_instance.add_tag("eggo_node_type", "launcher")
wait_for_instance_state(ec2_conn, launcher_instance)
execute(install_director_client, hosts=[launcher_instance.ip_address])
execute(install_private_key, hosts=[launcher_instance.ip_address])
return launcher_instance
def terminate_launcher_instance(ec2_conn, stack_name):
launcher_instance = get_launcher_instance(ec2_conn, stack_name)
launcher_instance.terminate()
wait_for_instance_state(ec2_conn, launcher_instance, "terminated")