aws elb set-load-balancer-policies-for-backend-server
Replaces the set of policies associated with the specified port on which the EC2 instance is listening with a new set of policies. AWS CLI reference
3 options Its page in the AWS CLI reference
Options
--instance-portThe port number associated with the EC2 instance.--load-balancer-nameThe name of the load balancer.--policy-namesThe names of the policies.