allow setting single-az with multiple nodes

Signed-off-by: Scott Cabrinha <scott@internaught.io>
cloudposse · Apr 23, 2021 · bb5a7e0 · bb5a7e0
1 parent 52509f7
commit bb5a7e0
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/main.tf b/main.tf
@@ -97,8 +97,8 @@ resource "aws_elasticache_cluster" "default" {
   maintenance_window           = var.maintenance_window
   notification_topic_arn       = var.notification_topic_arn
   port                         = var.port
-  az_mode                      = var.cluster_size == 1 ? "single-az" : "cross-az"
-  preferred_availability_zones = [for n in range(0, var.cluster_size) : element(var.availability_zones, n)]
+  az_mode                      = var.az_mode
+  preferred_availability_zones = var.availability_zones
   tags                         = module.this.tags
 }
 

diff --git a/variables.tf b/variables.tf
@@ -75,6 +75,12 @@ variable "availability_zones" {
   description = "List of Availability Zones for the cluster"
 }
 
+variable "az_mode" {
+  type        = string
+  default     = "single-az"
+  description = "Enable or disable multiple AZs, eg: single-az or cross-az"
+}
+
 variable "zone_id" {
   type        = string
   default     = ""