Our Kubernetes helm charts are open sourced here. It should be straight forward to install it on your current k8s cluster.

https://github.com/rudderlabs/rudderstack-helm

We use helm charts to deploy Rudder. Repo here https://github.com/rudderlabs/rudderstack-helm

We have 3 separate pods - one for the RUdder core BE, one for the transformation (javascript which map events from Rudder format to destination format as well as user defined transformations) and one running Postgres.