def register_app_instance(instanceId, elb_client,
                          lbName='CachetLoadBalancer'):
    response = elb_client.register_instances_with_load_balancer(
        LoadBalancerName=lbname,
        Instances[{'instanceId': instanceId}])
    print(response)
    return
def register_app_instance(instanceId, elb_client,
                          lbName='CachetLoadBalancer'):
    try:
        response = elb_client.register_instances_with_load_balancer(
            LoadBalancerName = lbName,
            Instances = [{'InstanceId': instanceId}])
        print(response)
    except botocore.exceptions.ClientError as e:
        print(e)
    return
def register_app_instance(instanceId, elb_client, lbName='CachetLoadBalancer'):
    try:
        response = elb_client.register_instances_with_load_balancer(
            LoadBalancerName=lbName, Instances=[{
                'InstanceId': instanceId
            }])
        print(response)
    except botocore.exceptions.ClientError as e:
        print(e)
    return