Vault UI OIDC Terraform Provider Vault-Namespace Errors

Introduction

With the 3.1.0 updates for Vault Provider for Terraform, there is a potentially breaking change to the vault_jwt_auth_backend resource regarding namespace settings.

Problem

After upgrading to 3.1.0, the Vault UI OIDC prompt may not appear which consequently prevents successful login for users tied to OIDC.

Solution

Double check the argument namespace_in_state for the vault_jwt_auth_backend Terraform resource in the Terraform code - it may be set to true by default causing the issue - switch this value to false. If it is not in the code, adding the argument and setting it to false should resolve the issue and result in the prompt reappearing during sign-in.