add new variable, health_check, to allow ELB health checks configuration

main.tf

@@ -113,9 +113,19 @@ resource "aws_alb_target_group" "tg" {
     type = "lb_cookie"
   }
 
-  health_check {
-    path    = "/"
-    matcher = "302"
+  dynamic "health_check" {
+    for_each = [var.health_check]
+    content {
+      enabled             = try(health_check.value.enabled, null)
+      healthy_threshold   = try(health_check.value.healthy_threshold, null)
+      interval            = try(health_check.value.interval, null)
+      matcher             = try(health_check.value.matcher, null)
+      path                = try(health_check.value.path, null)
+      port                = try(health_check.value.port, null)
+      protocol            = try(health_check.value.protocol, null)
+      timeout             = try(health_check.value.timeout, null)
+      unhealthy_threshold = try(health_check.value.unhealthy_threshold, null)
+    }
   }
 }
 

test/test.tf

@@ -32,6 +32,17 @@ module "full" {
   instance_type            = "t3.micro"
   create_adminer           = true
   enable_adminer           = true
+  health_check = {
+    enabled             = true
+    healthy_threshold   = 3
+    interval            = 30
+    matcher             = "200-399"
+    path                = "/"
+    port                = "traffic-port"
+    protocol            = "HTTP"
+    timeout             = 10
+    unhealthy_threshold = 3
+  }
 }
 
 provider "aws" {

variables.tf

@@ -134,6 +134,14 @@ variable "default_cert_domain_name" {
   type        = string
 }
 
+variable "health_check" {
+  description = "Elastic Load Balancer health check configuration"
+  type        = map(string)
+  default = {
+    path    = "/"
+    matcher = "200-399"
+  }
+}
 
 /*
  * Database configuration