terraform plan: Error: Invalid function argument about terraform-aws-next-js

[ofhouse]

Did you run npx tf-next build in the root of your Next.js project before running terraform apply?

Looks like the build output from the tf-next command (which is stored in .next-tf directory) is not present.

[ahmed-rezk-dev]

This a screenshot of my foulders https://i.imgur.com/tlefhK8.png

it only happened if I used

 backend "remote" {
    organization = "*****"

    workspaces {
      name = "*****"
    }
  }

[ofhouse]

Looks like you are using Terraform Cloud for the deployment?
My guess is that the .next-tf folder is not uploaded correctly to Terraform Cloud and is therefore not present when running terraform apply.

Looking at your files it seems that your .terraformignore file is in the wrong place.
It's not very well documented but it should be located in the project root (/.terraformignore, where your .prettierrc.js is located) rather than in the terraform subfolder /terraform/.terraformignore.

Content of the .terraformignore file should also include the .tf-next directory as described in the Readme.

[ahmed-rezk-dev]

Yes, I'm using Terraform Cloud for the deployment. I'm trying to make it work with AWS and GitHub actions with Terraform. Terraform Cloud is one of the requirement. If you think of another way to do it without the Terraform Cloud. Please let me know.

I tried to add the .terraformignore in the main directory including the .tf-next. But still giving me the same error.

[ofhouse]

Interesting we also use Terraform Cloud for an project and it works fine for us.

Do you use the VCS integration or do you execute terraform apply on the GitHub Actions instance first which triggers a remote apply in Terraform Cloud?

[ahmed-rezk-dev]

I'm actually trying to make work locally first. Then move to setup with Github actions but I will execute terraform apply on the GitHub Actions.

[ofhouse]

Okay, yes this sounds like a similar approach we are using for our own infrastructure which works fine.

Keep in mind that terraform plan or terraform apply do not trigger a build of Next.js by its own.
For a complete deployment you always have to execute npx tf-next build (which creates a Next.js build and pipes it to the .next-tf directory) and then terraform plan or terraform apply (which picks up some files from the previously generated .next-tf folder) in this exact order.

Looking at your workflow here I do not see any execution of npx tf-next build which may is the cause of the error.

[ahmed-rezk-dev]

I did before then I removed it again. I got the same error locally. That's why I'm trying to get it to work before pushing it again.

You are welcome to try my repo to see the error by yourself.

[ofhouse]

Checked it out locally and the apply was successful in Terraform Cloud for me.
Here are my steps for reproduction:

Setup

• Terraform Version: 0.14.3
• Terraform Working Directory (In Terraform Cloud Settings): /terraform
  

Reproduction steps

1. Git checkout

git clone [email protected]:ahmed-rezk-dev/nile-dahsboard.git
git checkout develop

2. Create .terraformignore file in repo-root with the following content:

# .terraformignore
*
!terraform/
!**/.next-tf/**

3. Install dependencies & run tf-next build

yarn
yarn tf-next

4. Run terraform apply on Terraform Cloud

cd terraform
terraform init
terraform login

terraform apply

[ofhouse]

I'm going to close this issue because it has been inactive for 30 days ⏳. This helps to find and focus on the active issues.