chore: add multi_az_enabled variable

main.tf

@@ -63,7 +63,7 @@ resource "aws_elasticache_replication_group" "default" {
   # one available read replica. Clusters without read replicas do not provide high availability or fault tolerance.
   # https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/AutoFailover.html
   automatic_failover_enabled = var.automatic_failover_enabled
-
+  multi_az_enabled           = var.multi_az_enabled
   # Redis at-rest encryption is an optional feature to increase data security by encrypting on-disk data during sync
   # and backup or snapshot operations. Because there is some processing needed to encrypt and decrypt the data,
   # enabling at-rest encryption can have some performance impact during these operations.

variables.tf

@@ -77,6 +77,12 @@ variable "automatic_failover_enabled" {
   description = "Specifies whether a read-only replica will be automatically promoted to read/write primary if the existing primary fails."
 }
 
+variable "multi_az_enabled" {
+  default     = true
+  type        = bool
+  description = "Specifies whether a read-only replica will be automatically promoted to read/write primary if the existing primary fails."
+}
+
 variable "at_rest_encryption_enabled" {
   default     = true
   type        = bool