CODEWITHSUNDEEP
amazon-web-servicesredisterraformamazon-elasticache
Abhishek Patil
Abhishek Patil

Reputation: 1445

Get IP address of AWS ElastiCache Redis cluster in terraform

I have a Redis cluster in AWS ElastiCache

resource "aws_elasticache_replication_group" "custom-redis-cluster" {
...
}

I want to access the IP of all of it' clusters. I have tried using dns_a_record_set to manually get the IP address from the DNS name but it's not working as well.

data "dns_a_record_set" "esg-redis-data" {
  host = "custom-redis-cluster.abcd1e.clustercfg.use2.cache.amazonaws.com"
}

variable "custom-redis-cluster-addrs" {
  type = list(string)
  value = data.dns_a_record_set.custom-redis-cluster.addrs
}

Error

Error: Unsupported argument

  on endpoint.services.tf line 37, in variable "custom-redis-cluster-addrs":
  37:   value = data.dns_a_record_set.custom-redis-cluster.addrs

How should I fetch the IP address of all the Redis clusters from Terraform?

Is there a way to fetch the Redis clusters DNS name dynamically instead of hard coding?

Upvotes: 1

Views: 1628

Answers (1)

Marcin
Marcin

Reputation: 238051

You can't use variables to define custom-redis-cluster-addrs variable. But you can create a local:

locals {
    custom-redis-cluster-addrs = data.dns_a_record_set.custom-redis-cluster.addrs
}

and use it as local.custom-redis-cluster-addrs where you need it.

Upvotes: 2

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