Terraform Enterprise FDO Podman: failed fetching Terraform ... read-only file system – HashiCorp Help Center

Introduction

Problem

During a Terraform run, you're seeing the following error regarding a read-only file system issue on your Terraform Enterprise FDO Podman.

[ERROR] terraform: 
Failed handling run: error="operation failed: failed fetching Terraform: failed downloading terraform: failed downloading "https://releases.hashicorp.com/terraform/1.3.5/terraform_1.3.5_linux_amd64.zip":  GET "https://releases.hashicorp.com/terraform/1.3.5/terraform_1.3.5_linux_amd64.zip": giving up after 5 attempt(s): 
failed making temp file: open /tmp/terraform/aefsdafdsfasfsadfasfasfafaf8d5.download-f8fsdfdsfasdfsafasdfasffa4: 
read-only file system

Prerequisites

Using Terraform Enterprise FDO Podman

Cause

The following settings in tfe.yaml configuration file for Podman maybe misconfigured:

The environment variable called TFE_DISK_CACHE_VOLUME_NAME is missing or not pointing to a valid volume.

The volume mount below is missing or is not pointing to a valid volume

- mountPath: "/var/cache/tfe-task-worker/terraform"
  name: "terraform-enterprise_terraform-enterprise-cache-pvc"

The volume below is missing or is not correct

 - name: "terraform-enterprise_terraform-enterprise-cache-pvc"
   persistentVolumeClaim:
     claimName: "terraform-enterprise_terraform-enterprise-cache"

Solution:

Verify that the tfe.yaml matches the example configurations shared from the Deploy Terraform Enterprise to Podman documentation.

Below is the code example specific to the CACHE setting.

---
apiVersion: "v1"
kind: "Pod"
metadata:
  labels:
    app: "terraform-enterprise"
  name: "terraform-enterprise"
spec:
  restartPolicy: "Never"
  containers:
  - env:    - name: "TFE_DISK_CACHE_VOLUME_NAME"
      value: "terraform-enterprise_terraform-enterprise-cache"   ...    volumeMounts:    - mountPath: "/var/cache/tfe-task-worker/terraform"
      name: "terraform-enterprise_terraform-enterprise-cache-pvc"
    ...  volumes:
  - name: "terraform-enterprise_terraform-enterprise-cache-pvc"    persistentVolumeClaim:
      claimName: "terraform-enterprise_terraform-enterprise-cache"

Outcome

After a restart of Terraform Enterprise the issue should be resolved.