AWS VPC Data Call

Terraform Notes

VPC Data call

Click Here for TF Reference.

In Terraform you can make Data Call to get information about VPC. Few catches, though...

• TF limits you to return only exactly 1 matching VPC
• TF will fail miserable if 0 matching VPC is returned

There are existing arguments, but if you just want the VPC that has a Tag Key, you can do a sub-block of filter.

provider "aws" {
  region   = "us-east-1"
  profile  = "dx"
  insecure = "true"
  alias    = "dx"
}

data "aws_vpc" "this" {
  filter {
    name="tag-key"
    values=["SGCatalog"]
  }
  provider = aws.dx
}

locals {
    VPC_ID = data.aws_vpc.this.id
    SGCatalogItems = split(",",data.aws_vpc.this.tags.SGCatalog)  
}

module "security_groups" {
  source = "make_my_security_groups"
  vpc_id = local.VPC_ID
  sg = local.SGCatalogItems
  providers = {
    aws = aws.dx
  }
}