CacheParameterGroupNotFound

[McCo0L]

Terraform CLI and Terraform AWS Provider Version

Terraform v0.14.7

• provider registry.terraform.io/hashicorp/aws v3.33.0

Affected Resource(s)

aws_elasticache_cluster

Terraform Configuration Files

resource "aws_elasticache_cluster" "sessionsmanager" {
  cluster_id           = "any-name"
  engine               = "memcached"
  node_type            = var.node_types
  num_cache_nodes      = 1
  parameter_group_name = var.parameter_group
  port                 = 11211
}

variable "node_types" {
  type        = string
  default     = "cache.t3.micro"
}

variable "parameter_group" {
  type    = string
  default = "default.memcached1.4"
}

Expected Behavior

aws elasticache created

Actual Behavior

Error: error creating ElastiCache Cache Cluster: CacheParameterGroupNotFound: CacheParameterGroup not found: default.memcached1.4
        status code: 404, request id: xxxxxx-xxxxxba-xxxxx-xxxxx-xxxxxxxxxxx

  on ../../modules/memcached/memcached.tf line 1, in resource "aws_elasticache_cluster" "sessionsmanager":
   1: resource "aws_elasticache_cluster" "sessionsmanager" {

Steps to Reproduce

1. terraform apply

[ewbankkit]

@McCo0L Thanks for raising this issue.
Which AWS region are you creating the ElastiCache cluster in?
It seems that the default.memcached1.4 cache parameter group is not available in all regions:

$ aws --region us-west-2 elasticache describe-cache-parameter-groups
{
    "CacheParameterGroups": [
        {
            "CacheParameterGroupName": "default.memcached1.4",
            "CacheParameterGroupFamily": "memcached1.4",
            "Description": "Default parameter group for memcached1.4",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:us-west-2:123456789012:parametergroup:default.memcached1.4"
        },
        {
            "CacheParameterGroupName": "default.memcached1.5",
            "CacheParameterGroupFamily": "memcached1.5",
            "Description": "Default parameter group for memcached1.5",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:us-west-2:123456789012:parametergroup:default.memcached1.5"
        },
...
$ aws --region eu-south-1 elasticache describe-cache-parameter-groups
{
    "CacheParameterGroups": [
        {
            "CacheParameterGroupName": "default.memcached1.5",
            "CacheParameterGroupFamily": "memcached1.5",
            "Description": "Default parameter group for memcached1.5",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:eu-south-1:123456789012:parametergroup:default.memcached1.5"
        },
        {
            "CacheParameterGroupName": "default.memcached1.6",
            "CacheParameterGroupFamily": "memcached1.6",
            "Description": "Default parameter group for memcached1.6",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:eu-south-1:123456789012:parametergroup:default.memcached1.6"
        },
...

[McCo0L]

@ewbankkit the region is us-east-2, and looks like we have it there:

$ aws --region us-east-2 elasticache describe-cache-parameter-groups
{
    "CacheParameterGroups": [
        {
            "CacheParameterGroupName": "default.memcached1.4",
            "CacheParameterGroupFamily": "memcached1.4",
            "Description": "Default parameter group for memcached1.4",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:us-east-2:498145187150:parametergroup:default.memcached1.4"
        },
        {
            "CacheParameterGroupName": "default.memcached1.5",
            "CacheParameterGroupFamily": "memcached1.5",
            "Description": "Default parameter group for memcached1.5",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:us-east-2:498145187150:parametergroup:default.memcached1.5"
        },
        {
            "CacheParameterGroupName": "default.memcached1.6",
            "CacheParameterGroupFamily": "memcached1.6",
            "Description": "Default parameter group for memcached1.6",
            "IsGlobal": false,
            "ARN": "arn:aws:elasticache:us-east-2:498145187150:parametergroup:default.memcached1.6"
        },

[McCo0L]

was able to create it using default.memcached1.6 but not 1.4 or 1.5 besides both look avaiable on us-east-2

[ewbankkit]

@McCo0L Could you try specifying an explicit engine_version attribute?

When I go to create a memcached cluster in us-east-2 using the AWS Console the default is version 1.6.6:

The AWS API Reference does not describe what the default EngineVersion value is, so it may be that "the latest" engine version is used and hence the default.memcached1.4 and default.memcached1.5 aren't applicable - The AWS error message is not very helpful in that case.

[github-actions]

Marking this issue as stale due to inactivity. This helps our maintainers find and focus on the active issues. If this issue receives no comments in the next 30 days it will automatically be closed. Maintainers can also remove the stale label.

If this issue was automatically closed and you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thank you!

[github-actions]

This functionality has been released in v5.10.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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.