vector search enabled MemoryDB cluster via terraform module

[filipecosta90]

via aws-cli we can create the cluster with vector search enabeld by passing the parameter group default.memorydb-redis7.search.preview, as stated in:

To create a vector search enabled MemoryDB cluster, you can use the MemoryDB [create-cluster](https://docs.aws.amazon.com/cli/latest/reference/memorydb/create-cluster.html) command by passing an immutable parameter group default.memorydb-redis7.search.preview to enable the preview mode for vector search capabilities.

However, when I do that via terraform:

module "memory_db" {
  source = "terraform-aws-modules/memory-db/aws"


  engine_version            = "7.1"
  node_type                    = "db.r7g.2xlarge"
  num_shards                 = 1
  
  # Parameter group
  create_parameter_group = false
  parameter_group_family = "default.memorydb-redis7.search.preview"
 (...)
 (...)
}

it's not enabled.
I've confirmed it:

-ERR Command not enabled, instance needs to be configured for Public Preview for Vector Similarity Search

[jeferramirez]

I have the same problem, can anyone help us, please?

[bryantbiggs]

I don't think you are following the docs correctly, I think you need to do:

module "memory_db" {
  source = "terraform-aws-modules/memory-db/aws"


  engine_version = "7.1"
  node_type      = "db.r7g.2xlarge"
  num_shards     = 1
  
  # Parameter group
  create_parameter_group = false
  parameter_group_name   = "default.memorydb-redis7.search.preview"
  ...
}

[jeferramirez]

I don't think you are following the docs correctly, I think you need to do:

module "memory_db" {
  source = "terraform-aws-modules/memory-db/aws"


  engine_version = "7.1"
  node_type      = "db.r7g.2xlarge"
  num_shards     = 1
  
  # Parameter group
  create_parameter_group = false
  parameter_group_name   = "default.memorydb-redis7.search.preview "
  ...
}

I'm getting this error from terraform apply : InvalidParameterValueException: Parameter Group ID specified is not a valid identifier. Identifiers must begin with a letter; must contain only ASCII letters, digits, dots and hyphens; and must not end with a dot or hyphen or contain two consecutive dots or hyphens.

my code:

module "memory_db" {
  source = "terraform-aws-modules/memory-db/aws"


  engine_version = "7.1"
  node_type      = "db.t4g.medium"
  num_shards     = 1
  parameter_group_family = "memorydb_redis7"

  # Parameter group
  create_parameter_group = false
  parameter_group_name   = "default.memorydb-redis7.search.preview "
  ...
}

[bryantbiggs]

oh, there was an extra whitespace character in the snippet I provided - corrected

[bryantbiggs]

also, you shouldn't need parameter_group_family = "memorydb_redis7" - thats only used if you are creating a parameter group

[jeferramirez]

oh, there was an extra whitespace character in the snippet I provided - corrected

Thank you so much this approach works

[bryantbiggs]

awesome! closing this out then, thanks all!