Lab 21.1 Verify that query goes to Cortex

froman

Hello,
After starting SeaweedFS and Cortex, and configuring Prometheus, Lab 21.1 says "You should now be able to query data from Cortex via Prometheus’s expression browser." How can I verify that and that query data is not from local storage?
It would be good if instructors give instructions on how to check that data is being stored on Cortex.
Many thanks.
Best Regards,
F.