I'm trying to use terraform and Linode's kubernetes cluster (LKE) in Github Actions, but I'm running into an issue when I try to run the plan or apply commands – they just hang. My guess is that because the terraform init generates an output that the terraform plan cannot access. But I'm not sure how to make that outcome available to the next step.

My github actions workflow file looks like this:

init-terraform:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
        with:
          ref: 'some-branch'
      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v1
        with:
          cli_config_credentials_token: ${{ secrets.TERRAFORM_API_TOKEN }}
      - name: Terraform Init
        run: terraform init

      - name: Terraform Plan
        run: terraform plan

      - name: Terraform Apply
        run: terraform apply -auto-approve

The init seems to work fine, but the plan just hangs. When I run this locally, the plan takes about 20 seconds.

My main.tf file in the repo looks like this:

terraform {
  required_providers {
    linode = {
      source  = "linode/linode"
      version = "=1.16.0"
    }
  }
}

provider "linode" {
}

resource "linode_lke_cluster" "lke_cluster" {
    label       = "my-label"
    k8s_version = "1.21"
    region      = "us-central"

    pool {
        type  = "g6-standard-2"
        count = 3
    }
}

I have set the TERRAFORM_API_TOKEN as a github secret and I set LINODE_TOKEN as a terraform environment variable.

What am I missing that is causing the terraform call to hang?