From f26af56bed56aed1f505f5a54ed8cd82fc6b242f Mon Sep 17 00:00:00 2001
From: Zachary Blasczyk <zachary.blasczyk@wandb.com>
Date: Tue, 16 Jan 2024 13:22:28 -0600
Subject: [PATCH] fix: Max LB name length

---
 main.tf | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/main.tf b/main.tf
index 180724847..3673626b9 100644
--- a/main.tf
+++ b/main.tf
@@ -184,6 +184,11 @@ module "redis" {
   kms_key_arn = local.kms_key_arn
 }
 
+locals {
+  max_lb_name_length = 32 - length("-alb-k8s")
+  lb_name_truncated  = "${substr(var.namespace, 0, min(length(var.namespace), local.max_lb_name_length))}-alb-k8s"
+}
+
 module "wandb" {
   source  = "wandb/wandb/helm"
   version = "1.2.0"
@@ -229,7 +234,7 @@ module "wandb" {
         class = "alb"
 
         annotations = {
-          "alb.ingress.kubernetes.io/load-balancer-name"             = "${var.namespace}-alb-k8s"
+          "alb.ingress.kubernetes.io/load-balancer-name"             = local.lb_name_truncated
           "alb.ingress.kubernetes.io/inbound-cidrs"                  = <<-EOF
             ${join("\\,", var.allowed_inbound_cidr)}
           EOF