@big-city-64196 Honestly just run the minecraft server on a single windows or linux machine. You don't need or want clustering. Setting up and maintaining what you're asking to setup is vastly more complicated than the questions you're asking indicate you're ready for.
If you really want to experiment with clustering then fine, but you should know that even if you get it all working it's not going to give you what you want.
Minecraft is not written in a way that it can be distributed and run simultaneously across multiple computers, so (after a lot of frustration) you're just going to eventually end up with a minecraft server that can still run on only exactly one of the machines, but in a much more complicated way.
Some reasons you might actually want a k8s cluster are:
• To run (other) software that does know how to run in a distributed way and you need more capacity than one machine can provide (and/or care about availability if one dies)
• To run multiple separate independent instances (for example if you wanted 10 totally independent minecraft realms)
• Running multiple of those with multiple users managing them and caring about controlling how much access different people have