TFE FDO Kubernetes - Plan errored - undefined – HashiCorp Help Center

Introduction

Problem

Runs give an error without a clear message of the issue

Prerequisites

You have Terraform Enterprise Flexible Deployment running on Kubernetes

Cause

Terraform Enterprise will start a new pod under the namespaceterraform-enterprise-agents. The issue could be that there are not enough resources on the Kubernetes cluster to start this pod.

Verify the events on the specified namespace

kubectl get events -n terraform-enterprise-agents

You might see the following for example

 0/1 nodes are available: 1 Insufficient memory. 
   preemption: 0/1 nodes are available: 
   1 No preemption victims found for incoming pod..

Solutions:

Resize your Kubernetes cluster to have enough resources to start the specified pods

If the above is not an option then verify the settings as specified here

Alter the CPU/Memory a tasks is allowed to use
Alter the TFE_CAPACITY_CONCURRENCYfor a better fit on your Kubernetes cluster

Outcome

With enough resources the runs should execute and you should see these task pods starting

kubectl get pods -n terraform-enterprise-agents

NAME                                                  READY STATUS  RESTARTS AGE
tfe-task-ddab255d-7dc6-4ca9-8ecb-b47e8a27bee0-klzkh  1/1   Running 0        11s

If you still have issues then please create a ticket with HashiCorp Support

Additional Information

TFE FDO Kubernetes settings in our official documentation here