How do I attach an aws classic load balancer to the cluster node group?

const cluster = new eks.Cluster(...)
const nodeGroup = cluster.createNodeGroup(...)
const nodeLoadBalancer = new aws.elb.LoadBalancer(...)
const nodeAutoScalingGroup = nodeGroup.autoScalingGroupName.apply(name => aws.autoscaling.getGroup({ name: name }));
nodeAutoScalingGroup.loadBalancers...? // readonly

I don’t exactly have understand the question. The load balancer will be associated with some service, not directly with the node group. You can either create it in your vpc in Pulumi and use its id as input to a Service in Kubernetes, or let Kubernetes create it for you as part of a Service of type LoadBalancer.

In our current devops stack, which I'm trying to partially port to Pulumi, we specify the load balancers at the time we create the node ASG.