internal_lb.tf

# Deploy internal LB
resource "aws_lb" "internal_aws_lb" {
  name               = "${var.project_name}-Internal-NLB"
  internal           = true
  load_balancer_type = "network"
  subnets            = aws_subnet.spoke_1_external_subnet.*.id

  tags = {
    Environment       = "${var.project_name}-Internal_NLB"
    x-chkp-forwarding = "TCP-${var.app_1_high_port}-80"
    x-chkp-management = var.template_management_server_name
    x-chkp-template   = var.inbound_configuration_template_name
  }
}

resource "aws_lb_listener" "internal_lb_listener" {
  load_balancer_arn = aws_lb.internal_aws_lb.arn
  port              = 80
  protocol          = "TCP"

  default_action {
    target_group_arn = aws_lb_target_group.internal_lb_target_group.arn
    type             = "forward"
  }
}

resource "aws_lb_target_group" "internal_lb_target_group" {
  name     = "${var.project_name}-Int-NLB-TG"
  port     = "80"
  protocol = "TCP"
  vpc_id   = aws_vpc.spoke_1_vpc.id
  tags = {
    name = "${var.project_name}-Int-NLB-TG"
  }
}

resource "aws_lb_target_group_attachment" "internal_lb_target_group_attachment" {
  count            = length(aws_instance.spoke_1_instance)
  target_group_arn = aws_lb_target_group.internal_lb_target_group.arn
  target_id        = element(aws_instance.spoke_1_instance.*.id, count.index)
  port             = 80
}