tictac VS libcluster

I wrote a multi-player, multi-region tic-tac-toe game using LiveView. You can check it out here. https://github.com/fly-apps/tictac

I know that you said that you don't want to be locked into another cloud, but I would recommend a read at https://fly.io/blog/building-a-distributed-turn-based-game-system-in-elixir/ to see how easier it is to build a distributed application in elixir than in other stacks, just think of fly.io as the equivalent to k8s, providing just the infrastructure.

libcluster is the go-to package for connecting multiple BEAM instances and setting up healing strategies. libcluster provides out-of-the-box strategies and it allows users to define their own strategies by implementing a simple behavior that defines cluster formation and healing according to the supporting service you want to use.

I am using libcluster to connect my nodesI get the following error:

Distributed Elixir can be done with Docker containers too, see https://github.com/bitwalker/libcluster which by default has some Kubernetes support but you can also have third party (or custom) clustering strategies. I've not done this myself but I've seen articles about this a lot during the past years.

Hot code updates for most applications aren't really worth it in my opinion, assuming you do something like blue/green rollover deployments. It's cool that it's possible though. But it requires appup files and afaik Distillery is one of the release tools that has support for it built-in.

On the deployment level, you can use synchronous communication using API-based solutions or asynchronous communication using external solutions (RabbitMQ, Kafka,...) or Erlang/Elixir tools (message passing, pg2, PubSub, Libcluster,...)

Looking throught libcluster code (https://github.com/bitwalker/libcluster/blob/master/lib/strategy/kubernetes_dns.ex#L150) it does seem to require that both nodes share the same basename.

libcluster – Automatic cluster formation/healing for Elixir applications.