aws_elasticache_cluster does not export node endpoints or IP addresses

[juniorplenty]

(This is an issue for both memcache and redis cluster types - the example below is for redis)

Terraform 0.5.0

Sample configs:

### VARS #################################
variable "aws_access_key" {}
variable "aws_secret_key" {}
variable "region" {
  default = "us-east-1"
}
variable "availability_zone" {
  default = "us-east-1e"
}
variable "vpc_name" {
  default = "test-cache"
}

### VPC ##################################
provider "aws" {
  access_key = "${var.aws_access_key}"
  secret_key = "${var.aws_secret_key}"
  region     = "${var.region}"
}
resource "aws_vpc" "default" {
  cidr_block = "10.250.0.0/16"
  tags{
    Name = "${var.vpc_name}"
  }
}
resource "aws_internet_gateway" "default" {
  vpc_id = "${aws_vpc.default.id}"
}
resource "aws_subnet" "public" {
  vpc_id = "${aws_vpc.default.id}"
  cidr_block = "10.250.2.0/24"
  availability_zone = "${var.availability_zone}"
  map_public_ip_on_launch = true
}
resource "aws_subnet" "private" {
  vpc_id = "${aws_vpc.default.id}"
  cidr_block = "10.250.3.0/24"
  availability_zone = "${var.availability_zone}"
  map_public_ip_on_launch = true
}
resource "aws_route_table_association" "private" {
  subnet_id = "${aws_subnet.private.id}"
  route_table_id = "${aws_route_table.public.id}"
}
resource "aws_route_table" "public" {
  vpc_id = "${aws_vpc.default.id}"
  route {
    cidr_block = "0.0.0.0/0"
    gateway_id = "${aws_internet_gateway.default.id}"
  }
}
resource "aws_route_table_association" "public" {
  subnet_id = "${aws_subnet.public.id}"
  route_table_id = "${aws_route_table.public.id}"
}

### ELASTICACHE ##########################
resource "aws_elasticache_subnet_group" "test-cache" {
  name = "test-cache-subnet"
  description = "Redis Subnet Group"
  subnet_ids = ["${aws_subnet.private.id}"]
}
resource "aws_elasticache_cluster" "test-cache" {
  cluster_id = "test-cluster"
  subnet_group_name = "${aws_elasticache_subnet_group.test-cache.name}"
  engine = "redis"
  engine_version = "2.8.19"
  node_type = "cache.t2.micro"
  num_cache_nodes = 1
  parameter_group_name = "default.redis2.8"
}

Resulting elasticache_cluster in state - note no connection information:

"aws_elasticache_cluster.test-cache": {
                    "type": "aws_elasticache_cluster",
                    "depends_on": [
                        "aws_elasticache_subnet_group.test-cache"
                    ],
                    "primary": {
                        "id": "test-cluster",
                        "attributes": {
                            "cluster_id": "test-cluster",
                            "engine": "redis",
                            "engine_version": "2.8.19",
                            "id": "test-cluster",
                            "node_type": "cache.t2.micro",
                            "num_cache_nodes": "1",
                            "parameter_group_name": "default.redis2.8",
                            "port": "11211",
                            "security_group_ids.#": "0",
                            "security_group_names.#": "0",
                            "subnet_group_name": "test-cache-subnet"
                        }
                    }
                },

Resulting entire state file:

{
    "version": 1,
    "serial": 2,
    "modules": [
        {
            "path": [
                "root"
            ],
            "outputs": {},
            "resources": {
                "aws_elasticache_cluster.test-cache": {
                    "type": "aws_elasticache_cluster",
                    "depends_on": [
                        "aws_elasticache_subnet_group.test-cache"
                    ],
                    "primary": {
                        "id": "test-cluster",
                        "attributes": {
                            "cluster_id": "test-cluster",
                            "engine": "redis",
                            "engine_version": "2.8.19",
                            "id": "test-cluster",
                            "node_type": "cache.t2.micro",
                            "num_cache_nodes": "1",
                            "parameter_group_name": "default.redis2.8",
                            "port": "11211",
                            "security_group_ids.#": "0",
                            "security_group_names.#": "0",
                            "subnet_group_name": "test-cache-subnet"
                        }
                    }
                },
                "aws_elasticache_subnet_group.test-cache": {
                    "type": "aws_elasticache_subnet_group",
                    "depends_on": [
                        "aws_subnet.private"
                    ],
                    "primary": {
                        "id": "test-cache-subnet",
                        "attributes": {
                            "description": "Redis Subnet Group",
                            "id": "test-cache-subnet",
                            "name": "test-cache-subnet",
                            "subnet_ids.#": "1",
                            "subnet_ids.470247010": "subnet-b2033588"
                        }
                    }
                },
                "aws_internet_gateway.default": {
                    "type": "aws_internet_gateway",
                    "depends_on": [
                        "aws_vpc.default"
                    ],
                    "primary": {
                        "id": "igw-391a745c",
                        "attributes": {
                            "id": "igw-391a745c",
                            "tags.#": "0",
                            "vpc_id": "vpc-5856633d"
                        }
                    }
                },
                "aws_route_table.public": {
                    "type": "aws_route_table",
                    "depends_on": [
                        "aws_internet_gateway.default",
                        "aws_vpc.default"
                    ],
                    "primary": {
                        "id": "rtb-c7626ba2",
                        "attributes": {
                            "id": "rtb-c7626ba2",
                            "propagating_vgws.#": "0",
                            "route.#": "1",
                            "route.1115501861.cidr_block": "0.0.0.0/0",
                            "route.1115501861.gateway_id": "igw-391a745c",
                            "route.1115501861.instance_id": "",
                            "route.1115501861.network_interface_id": "",
                            "route.1115501861.vpc_peering_connection_id": "",
                            "tags.#": "0",
                            "vpc_id": "vpc-5856633d"
                        }
                    }
                },
                "aws_route_table_association.private": {
                    "type": "aws_route_table_association",
                    "depends_on": [
                        "aws_route_table.public",
                        "aws_subnet.private"
                    ],
                    "primary": {
                        "id": "rtbassoc-02ce0966",
                        "attributes": {
                            "id": "rtbassoc-02ce0966",
                            "route_table_id": "rtb-c7626ba2",
                            "subnet_id": "subnet-b2033588"
                        }
                    }
                },
                "aws_route_table_association.public": {
                    "type": "aws_route_table_association",
                    "depends_on": [
                        "aws_route_table.public",
                        "aws_subnet.public"
                    ],
                    "primary": {
                        "id": "rtbassoc-01ce0965",
                        "attributes": {
                            "id": "rtbassoc-01ce0965",
                            "route_table_id": "rtb-c7626ba2",
                            "subnet_id": "subnet-bd033587"
                        }
                    }
                },
                "aws_subnet.private": {
                    "type": "aws_subnet",
                    "depends_on": [
                        "aws_vpc.default"
                    ],
                    "primary": {
                        "id": "subnet-b2033588",
                        "attributes": {
                            "availability_zone": "us-east-1e",
                            "cidr_block": "10.250.3.0/24",
                            "id": "subnet-b2033588",
                            "map_public_ip_on_launch": "true",
                            "tags.#": "0",
                            "vpc_id": "vpc-5856633d"
                        }
                    }
                },
                "aws_subnet.public": {
                    "type": "aws_subnet",
                    "depends_on": [
                        "aws_vpc.default"
                    ],
                    "primary": {
                        "id": "subnet-bd033587",
                        "attributes": {
                            "availability_zone": "us-east-1e",
                            "cidr_block": "10.250.2.0/24",
                            "id": "subnet-bd033587",
                            "map_public_ip_on_launch": "true",
                            "tags.#": "0",
                            "vpc_id": "vpc-5856633d"
                        }
                    }
                },
                "aws_vpc.default": {
                    "type": "aws_vpc",
                    "primary": {
                        "id": "vpc-5856633d",
                        "attributes": {
                            "cidr_block": "10.250.0.0/16",
                            "default_network_acl_id": "acl-c0674ca5",
                            "default_security_group_id": "sg-df2a09bb",
                            "dhcp_options_id": "dopt-8ce70be9",
                            "id": "vpc-5856633d",
                            "main_route_table_id": "rtb-fa626b9f",
                            "tags.#": "1",
                            "tags.Name": "test-cache"
                        }
                    }
                }
            }
        }
    ]
}

[juniorplenty]

This feels more like a bug - it's inconsistent with the behavior of other modules, it makes it impossible to use/address the elasticsearch clusters without manual intervention, and is currently a blocking issue for us, and I'm sure other shops as well...

[catsby]

Apologies for not labeling correctly, I most likely just didn't grok the full issue here. I've relabeled it, and a PR was started to address this (#1965). Hopefully should get it in soon, thanks for the issue!

[catsby]

Closing, this is implemented in #1965, can you check that out and update over there?

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.