Error messages about controller.[...].pinecone.io on serverless indexes

Problem

When trying to access a serverless index via the API, you are getting an error that looks like

"whoami" controller is not reachable:
<https://controller.us-west-2-aws.pinecone.io/actions/whoami>

or

Failed to resolve 'controller.us-east-1-aws.pinecone.io'
([Errno -2] Name or service not known)"))

Solution

This error occurs because an outdated version of the Pinecone SDK is being used. Upgrading to the latest version will resolve the issue:

Python

pip install pinecone-client --upgrade