aws elb describe-load-balancers

aws elb delete-load-balancer --load-balancer-name <ELB-Name>

aws elb describe-load-balancers

import boto3

# Create an EC2 client
elb_client = boto3.client('elbv2')

# Get all the load balancers in the account
response = elb_client.describe_load_balancers()

# Loop through each load balancer and check if there are any instances associated with it
for lb in response['LoadBalancers']:
    lb_arn = lb['LoadBalancerArn']
    instances = elb_client.describe_target_health(TargetGroupArn=lb_arn)

    # If there are no instances associated with the load balancer, delete it
    if len(instances['TargetHealthDescriptions']) == 0:
        elb_client.delete_load_balancer(LoadBalancerArn=lb_arn)

# This example shows an unused Application/Network Load Balancer
# that should be removed from Terraform so it can be destroyed.

resource "aws_lb" "UNUSED_LB" {
  name               = "UNUSED_LB_NAME" # replace with the unused ALB/NLB name
  internal           = false
  load_balancer_type = "application"    # or "network"

  subnets = [
    aws_subnet.PUBLIC_SUBNET_1.id,
    aws_subnet.PUBLIC_SUBNET_2.id,
  ]

  security_groups = [
    aws_security_group.LB_SG.id,
  ]

  tags = {
    Name = "UNUSED_LB_NAME"
  }
}

# For a Classic Load Balancer the equivalent would be:
resource "aws_elb" "UNUSED_CLASSIC_ELB" {
  name = "UNUSED_CLASSIC_ELB_NAME" # replace with the unused CLB name

  subnets = [
    aws_subnet.PUBLIC_SUBNET_1.id,
    aws_subnet.PUBLIC_SUBNET_2.id,
  ]

  security_groups = [
    aws_security_group.LB_SG.id,
  ]

  listener {
    lb_port           = 80
    lb_protocol       = "HTTP"
    instance_port     = 80
    instance_protocol = "HTTP"
  }

  tags = {
    Name = "UNUSED_CLASSIC_ELB_NAME"
  }
}