[Workload Identity] Azure CLI Not Installed

[aiell0]

Bug Title

[Workload Identity] Azure CLI Not Installed

Crate Name

azure_identity

Crate Version

v0.22.0

Description

When using Workload Identity with the azure identity rust SDK, I am getting the following error in my service logs:

error getting token credential from Azure CLI - Azure CLI not installed

I didn't need to install the CLI on my NodeJS containers using the SDK. Just flagging in case I'm doing something wrong here.

Steps to Reproduce

1. Rust code:

let credential = DefaultAzureCredential::new()?;

2. Use Azure Workload Identity and run this code inside of a pod.
3. Get the error listed above

Checklist

• Follow our Code of Conduct
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.

[aiell0]

I used the DefaultAzureCredential because I figured the credential chain would use the workload identity eventually (this is how it works in Nodejs). Is that not the case. Should I be using WorkloadIdentityCredential?

[RickWinter]

We recommend using the specific credential(s) you intend to authenticate with. If you know you'll be authenticating with WorkloadIdentity then its best to explicitly use that credential. Using the explicit credential ensures your application always runs with the intended credentials.