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litellm - 💡(How to fix) Fix [Bug]: /metrics endpoint not allowing for unauthenticated access

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Error Message

After the update, the endpoint returns an unauthorized error, since I'm not using an API key to authenticate for these requests.

Fix Action

Fix / Workaround

  1. Upgrade to 1.84.0
  2. Lose metrics
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Check for existing issues

  • I have searched the existing issues and checked that my issue is not a duplicate.

What happened?

I have a liteLLM install that was recently upgraded to 1.84.0. I'm using the prometheus metrics with liteLLM sitting behind a reverse proxy to secure the metrics endpoint.

After the update, the endpoint returns an unauthorized error, since I'm not using an API key to authenticate for these requests.

The information I've found online says I should be able to use the require_auth_for_metrics_endpoint option, but it does not work as expected (LiteLLM still needs a key for authorization).

  1. Is there any way to restore access to the metrics?
  2. Is there any way to be notified of breaking changes before I upgrade? I've had similar things happen a few times before, and it's not optimal.

Steps to Reproduce

  1. Upgrade to 1.84.0
  2. Lose metrics

Relevant log output

What part of LiteLLM is this about?

Proxy

What LiteLLM version are you on ?

1.84.0

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litellm - 💡(How to fix) Fix [Bug]: /metrics endpoint not allowing for unauthenticated access