Terraform remote state data source

Remote Terraform state is read-only.

# dependencies.tf
data "terraform_remote_state" "db" {
  backend = "s3"
 
  config = {
    bucket = "(YOUR_BUCKET_NAME)"
    key    = "stage/data-stores/mysql/terraform.tfstate"
    region = "us-east-2"
  }
}

To access outputs of the remote state:

data.terraform_remote_state.<NAME>.outputs.<ATTRIBUTE>

Example:

resource "aws_launch_configuration" "example" {
  image_id        = "ami-0fb653ca2d3203ac1"
  instance_type   = "t2.micro"
  security_groups = [aws_security_group.instance.id]
 
  # Render the User Data script as a template
  user_data = templatefile("user-data.sh", {
    server_port = var.server_port
    db_address  = data.terraform_remote_state.db.outputs.address
    db_port     = data.terraform_remote_state.db.outputs.port
  })
}