Operation failed: failed generating plan JSON: failed running command (exit 2) on Terraform v1.0.1

Introduction

Problem

Generating a JSON version of a saved plan file may fail on Terraform v1.0.1. This issue has been specifically observed in environments which are running a Terraform cloud agent.

Prerequisites

• Terraform v1.0.1
• terraform show JSON
  • terraform plan -out=plan.out
  • terraform show -json plan.out

Cause

• In Terraform v1.0.1, we mark the resource instance value with any marks stored in AttrSensitivePaths to build the SensitiveValues object.

• ResourceInstanceObjectSrc.Decode handles marking the decoded values with any marks stored inAttrSensitivePaths, therefore re-applying those marks is not necessary and causes the JSON failed issue.

Solution

• This issue was fixed in Terraform v1.0.2.

Additional Information

• GitHub Issue - https://github.com/hashicorp/terraform/issues/29042

• Pull Request - https://github.com/hashicorp/terraform/pull/29049