I successfully setting up Redash and connect to Postgres. Everything seems fine when I make some simple query (SELECT * FROM …), but with more complex ones (built-in functions), Redash just shows “query in queue” and get stuck there forever. I have tried many recommended configuration (increase number of workers, remove queue…), but can’t still make it work.
Kubernetes deployments are not officially supported (but will be eventually). You might have better luck raising an issue on the helm_chart repo. It’s not something we maintain.
That said, when queries aren’t executing it usually means that either your workers are not running, or they are not watching the correct queues.
This can happen if you have more than one instance of redis running in your deployment. So the first thing I would check is that you have one, and only one, instance of redis.