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Troubleshooting the 401 Auth Error on RunPod Serverless

Troubleshooting and Resolving the 401 Auth Error in RunPod Serverless

When using RunPod Serverless, a common stumbling block that many developers face is the "401 Auth Error."

This error can be frustrating and can halt progress, but with a methodical approach, you can diagnose and resolve it. In this blog post, we'll explore what the error means, identify its common causes, and provide a step-by-step solution to help you fix it.

The Problem

The 401 error code is an HTTP status code that means Unauthorized. In the context of RunPod Serverless and Postman, it typically signifies an issue with the authentication process. Even though your serverless endpoint might be correctly configured, there could be a mistake in your Postman setup leading to this error.

The Solution

Most of the time, the error is due to incorrect or missing API keys or endpoint IDs in Postman. Let's give into the details and resolve this issue.

Troubleshooting Guide

1. Verify your Serverless Endpoint ID:

  • The Serverless ID is found on your Endpoint page in RunPod

  • It should look something like this, "tcmbyl9hilra0d"

  • Verify that your Serverless Endpoint ID is correct

2. Verify your API Key:

  • Ensure you're using the full API key from RunPod. It should be approximately 40 characters in length.

  • When you create a new key in RunPod, you'll see the entire key only once. After that, RunPod displays just the first ten characters or so for reference.

  • If you've lost the original, you'll need to generate a new key in RunPod and make sure to save it properly this time.

3. Postman Variables:

  • You need to update the Postman variables with both your API KEY (found in runpod > settings > api key) and your serverless endpoint ID (found in runpod > serverless > endpoints).

  • There are two fields in Postman's variables section: “initial value” and “current value”. Make sure you input your API key and endpoint ID into 👉 BOTH 👈 fields.

  • Double-check if you saved the changes after entering the values. Missing this step is a common oversight!

4. Saving Changes:

  • Already called it out in the previous bullet point, but worth highlighting -- Postman's user interface has tripped up many users. It's easy to forget to hit the SAVE button after making any changes.

  • If you make any changes to variables, headers, or configurations, always remember to save.

  • A small red dot in the tab indicates it hasn't been saved.

In Conclusion

The 401 auth error in Postman can be frustrating, but with patience and methodical troubleshooting, it can be simple to resolve. Always remember to double-check your inputs, ensure you've saved your changes. Good luck, and happy debugging! 🍀

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