Terraform: how to to Reference Output Variables Across Modules in Different Workspaces
I'm testing a new approach and I'm trying to implement I've searched everywhere and can't find a clear answer... I've looked through the documentation and I'm still confused about I tried several approaches but none seem to work... I'm working on a project and hit a roadblock... I'm working with an scenario while trying to reference output variables from one module in another module across different workspaces in Terraform. I'm using Terraform v1.3.7 and I have my code structured into multiple modules within a root configuration. Here's the basic structure of my modules: - `root/` - `main.tf` - `modules/` - `network/` - `main.tf` - `outputs.tf` - `app/` - `main.tf` - `outputs.tf` In the `network` module, I define an output variable for the VPC ID: ```hcl output "vpc_id" { value = aws_vpc.main.id } ``` In the `app` module, I need to reference this VPC ID variable. I tried using the following code in `app/main.tf`: ```hcl module "network" { source = "../network" } resource "aws_security_group" "app_sg" { vpc_id = module.network.vpc_id // Other configurations } ``` However, when I run `terraform apply` in a workspace other than the default (like `dev`), I receive the behavior: ``` behavior: Invalid function argument on modules/app/main.tf line 4, in resource "aws_security_group" "app_sg": 4: vpc_id = module.network.vpc_id The argument "vpc_id" is not defined in module "network". ``` I've ensured that the `network` module is being called before the `app` module, and I've tried running `terraform output` in the `network` module to confirm that it is creating the output properly. Also, I verified that I'm in the correct workspace. I attempted to check the output variables by running `terraform output -state=path/to/network/terraform.tfstate`, but I keep getting an empty response. I've also looked into using `terraform_remote_state` to pull in outputs from other modules, but I'm unsure if that's the right approach for my use case. Any guidance on how to properly reference outputs from one module in another, especially when using multiple workspaces, would be greatly appreciated! For context: I'm using Hcl on Linux. Any ideas what could be causing this? My development environment is macOS. Any ideas what could be causing this? This is for a service running on Ubuntu 22.04.