Cannot get help after enabling auth approle or gcp

[janbols]

Environment:

• Vault Version: Vault v0.9.5 ('36edb4d42380d89a897e7f633046423240b710d9')
• Operating System/Architecture: Ubuntu 17.10 - x86_64

Vault Config File:

Startup Log Output:

 vault server -dev
==> Vault server configuration:

                     Cgo: disabled
         Cluster Address: https://127.0.0.1:8201
              Listener 1: tcp (addr: "127.0.0.1:8200", cluster address: "127.0.0.1:8201", tls: "disabled")
               Log Level: info
                   Mlock: supported: true, enabled: false
        Redirect Address: http://127.0.0.1:8200
                 Storage: inmem
                 Version: Vault v0.9.5
             Version Sha: 36edb4d42380d89a897e7f633046423240b710d9

Expected Behavior:

After enabling gcp auth, I should be able to get help information.

Actual Behavior:

Following error is shown:

vault auth help gcp   
INTERNAL ERROR! Found an auth method enabled at gcp/, but its type "gcp" is
not registered in Vault. This is a bug and should be reported. Please open an
issue at github.com/hashicorp/vault.

Steps to Reproduce:

1. vault auth enable gcp
2. vault auth enable gcp

The same applies when substituting gcp with approle

Important Factoids:

[jefferai]

This is a super confusing error message, including the fact that despite what it says it's not a bug, nor an internal error.

The problem is that some auth methods have CLI helpers that make it easier for people on the CLI to use them. gcp does not, so it's detecting that you have an auth method at gcp/ but when it says that its type is not registered in Vault, it doesn't mean the Vault server, it means the CLI's set of method-specific helpers.

In the linked PR I updated those error messages to be more clear.