Change Infrastructure
Now that we have bucket created, let’s modify it. Here’s the demo/main.tf again.
app/stacks/demo/main.tf
resource "random_pet" "this" {
length = 2
}
module "bucket" {
source = "../../modules/example"
bucket = "bucket-${random_pet.this.id}"
tags = var.tags
}
As you can see there’s a var.tags variable. One way to update the infrastructure is to change the variable in the variables.tf file directly.
app/stacks/demo/variables.tf
variable "tags" {
description = "(Optional) A mapping of tags to assign to the bucket."
type = map(string)
default = {}
}
However, you can also use tfvars files. Terraspace will automatically use app/stacks/demo/tfvars files according the TS_ENV value. The default value is TS_ENV=dev. We’ll use tfvars files so we can use the same code for different environments.
Generate Starter Tfvars Files
Addtionally, Terraspace can generate starter tfvar files for us with the terraspace seed command.
$ terraspace seed demo
Reading: .terraspace-cache/us-west-2/dev/stacks/demo/variables.tf
create app/stacks/demo/tfvars/dev.tfvars
$
The produced file looks something like this:
app/stacks/demo/tfvars/dev.tfvars
# Optional variables:
# tags = {...} # map(string)
Terraspace parses the demo/variables.tf file to generate the tfvars/dev.tfvars file. It detected that all the variables are optional. We’ll uncomment acl and change it to acl = "public-read".
app/stacks/demo/tfvars/dev.tfvars
# Optional variables:
tags = {
Name: "my-bucket", # <= CHANGED
}
Next, we’ll update the infrastructure.
