The year is specified, because things can change and better ways to do it will possibly appear. I'm documenting what worked for me right now, since trying to bootstrap an Akka Cluster instance on K8s with Istio took a few days of investigation, and I couldn't easily find a working solution.
This is not a detailed description of Akka Cluster and related configuration, but rather a short description of the minimal amount of things that are necessary to allow Akka Cluster nodes to see each other on K8s, if istio is in the way.
The first attempt to find something about "Akka Cluster Bootstrap on K8s" will likely show this page: