Create multiple GCP storage buckets using terraform

Question

I have used terraform scripts to create resources in GCP. The scripts are working fine. But my question is - how do I create multiple storage buckets using a single script. I have two files for creating the storage bucket- main.tf which has the terraform code to create the buckets . variables.tf which has the actual variables like storage bucket name, project_id, etc, which looks like this:

variable "storage_class" { default = "STANDARD" }
variable "name" { default = "internal-demo-bucket-1"}
variable "location" { default = "asia-southeast1" }

How can I provide more than one bucket name in the variable name? I tried to provide multiple names in an array but the build failed.

If your question is about creating multiple resources (buckets) show the HCL that you used and the error messages. — John Hanley

al-dann al-dann · Accepted Answer · 2021-11-02T09:41:13

I don't know all your requirements, however suppose you need to create a few buckets with different names, while all other bucket characteristics are constant for every bucket in the set under discussion.

I would create a variable, i.e. bucket_name_set in a variables.tf file:

variable "bucket_name_set" {
  description = "A set of GCS bucket names..."
  type        = list(string)
}

Then, in the terraform.tfvars file, I would provide unique names for the buckets:

bucket_name_set = [
  "some-bucket-name-001",
  "some-bucket-name-002",
  "some-bucket-name-003",
]

Now, for example, in the main.tf file I can describe the resources:

resource "google_storage_bucket" "my_bucket_set" {
  project       = "some project id should be here"

  for_each      = toset(var.bucket_name_set)
  name          = each.value     # note: each.key and each.value are the same for a set

  location      = "some region should be here"
  storage_class = "STANDARD"
  force_destroy = true

  uniform_bucket_level_access = true
}

Terraform description is here: The for_each Meta-Argument

Terraform description for the GCS bucket is here: google_storage_bucket

Terraform description for input variables is here: Input Variables

Create multiple GCP storage buckets using terraform

1 Answers