Remove Redis/ElastiCache

main/main.tf

@@ -20,7 +20,6 @@ module "stack" {
   public_subnet_cidr = "${var.public_subnet_cidr}"
   instance_type      = "${var.instance_type}"
   db_subnet_cidr     = "${var.db_subnet_cidr}"
-  redis_subnet_cidr  = "${var.redis_subnet_cidr}"
   dns_zone_name      = "${var.dns_zone_name}"
 
   db_id             = "${var.db_id}"

main/variables.tf

@@ -18,11 +18,6 @@ variable "db_subnet_cidr" {
   default     = "10.0.1.0/16"
 }
 
-variable "redis_subnet_cidr" {
-  description = "The CIDR block for the redis subnet"
-  default     = "10.0.128.0/24"
-}
-
 variable "dns_zone_name" {
   description = "The internal DNS name"
   default     = "poa.internal"

modules/stack/config.tf

@@ -12,18 +12,6 @@ resource "aws_ssm_parameter" "new_relic_license_key" {
   type  = "String"
 }
 
-locals {
-  redis_host = "${aws_elasticache_cluster.default.cache_nodes.0.address}"
-  redis_port = "${aws_elasticache_cluster.default.cache_nodes.0.port}"
-}
-
-resource "aws_ssm_parameter" "redis_url" {
-  count = "${length(var.chains)}"
-  name  = "/${var.prefix}/${element(keys(var.chains),count.index)}/redis_url"
-  value = "redis://${local.redis_host}:${local.redis_host}/${var.prefix}"
-  type  = "String"
-}
-
 resource "aws_ssm_parameter" "pool_size" {
   count = "${length(var.chains)}"
   name  = "/${var.prefix}/${element(keys(var.chains),count.index)}/pool_size"

modules/stack/hosts.tf

@@ -67,7 +67,6 @@ resource "aws_autoscaling_group" "explorer" {
   depends_on = [
     "aws_ssm_parameter.new_relic_app_name",
     "aws_ssm_parameter.new_relic_license_key",
-    "aws_ssm_parameter.redis_url",
     "aws_ssm_parameter.pool_size",
     "aws_ssm_parameter.ecto_use_ssl",
     "aws_ssm_parameter.exq_blocks_concurrency",

modules/stack/redis.tf

@@ -1,21 +0,0 @@
-resource "aws_elasticache_cluster" "default" {
-  cluster_id           = "${var.prefix}-explorer-redis"
-  engine               = "redis"
-  node_type            = "cache.m4.large"
-  num_cache_nodes      = 1
-  parameter_group_name = "default.redis3.2"
-  port                 = 6379
-  security_group_ids   = ["${aws_security_group.redis.id}"]
-  availability_zone    = "${data.aws_availability_zones.available.names[0]}"
-  subnet_group_name    = "${aws_elasticache_subnet_group.redis.id}"
-
-  tags {
-    prefix = "${var.prefix}"
-    origin = "terraform"
-  }
-}
-
-resource "aws_elasticache_subnet_group" "redis" {
-  name       = "${var.prefix}-redis-subnet-group"
-  subnet_ids = ["${aws_subnet.redis.id}"]
-}

modules/stack/security.tf

@@ -250,30 +250,3 @@ resource "aws_security_group" "database" {
     origin = "terraform"
   }
 }
-
-resource "aws_security_group" "redis" {
-  name        = "${var.prefix}-poa-redis"
-  description = "Allow any inbound traffic from public/private subnet"
-  vpc_id      = "${aws_vpc.vpc.id}"
-
-  # Allow traffic from within app server subnet
-  ingress {
-    from_port   = 6379
-    to_port     = 6379
-    protocol    = "tcp"
-    cidr_blocks = ["${var.public_subnet_cidr}"]
-  }
-
-  # Unrestricted outbound
-  egress {
-    from_port   = 0
-    to_port     = 0
-    protocol    = "-1"
-    cidr_blocks = ["0.0.0.0/0"]
-  }
-
-  tags {
-    prefix = "${var.prefix}"
-    origin = "terraform"
-  }
-}

modules/stack/subnets.tf

@@ -13,20 +13,6 @@ resource "aws_subnet" "default" {
   }
 }
 
-## Redis subnet
-resource "aws_subnet" "redis" {
-  vpc_id                  = "${aws_vpc.vpc.id}"
-  cidr_block              = "${var.redis_subnet_cidr}"
-  availability_zone       = "${data.aws_availability_zones.available.names[0]}"
-  map_public_ip_on_launch = false
-
-  tags {
-    name   = "${var.prefix}-redis-subnet"
-    prefix = "${var.prefix}"
-    origin = "terraform"
-  }
-}
-
 ## Database subnet
 resource "aws_subnet" "database" {
   count                   = "${length(data.aws_availability_zones.available.names)}"

modules/stack/variables.tf

@@ -4,7 +4,6 @@ variable "key_name" {}
 variable "vpc_cidr" {}
 variable "public_subnet_cidr" {}
 variable "db_subnet_cidr" {}
-variable "redis_subnet_cidr" {}
 variable "dns_zone_name" {}
 variable "instance_type" {}