thanks, lots of good pointers to follow up on, though I suspect there is a load of terminology who's precise meaning is more context dependend. For example the wikipedia distributed operational system [0] entry does not seem to really apply.
Turns out somebody did build (some version of) kubernetes cluster on rasbperry pi [1] so I might get to the bottom of it :-)
It applies actually. I forgot to explain why Kubernetes solves a simplified version of the problem.
The simplification is that you can build a distributed operational system completely hiding the fact that you have millions of computers. This is, let’s say freacking hard.
But you can build one where this fact is not hidden, just alleviated. This is only super hard. This is what Kubernetes does.
Also you can break those millions of computers in small groups of thousands. This is what Kubernetes is aimed for. But you can still make those groups work together, using external tools, like load balancers and global dns zones and networks.
UPDATE:
a very interesting explanation of the problem and the solution used by Borg and kubernetes is on this lecture. https://youtu.be/0W49z8hVn0k It’s quite insightful and easy to understand actually.
The simplification is that you can build a distributed operational system completely hiding the fact that you have millions of computers. This is, let’s say freacking hard.
But you can build one where this fact is not hidden, just alleviated. This is only super hard. This is what Kubernetes does.
Also you can break those millions of computers in small groups of thousands. This is what Kubernetes is aimed for. But you can still make those groups work together, using external tools, like load balancers and global dns zones and networks.
UPDATE:
a very interesting explanation of the problem and the solution used by Borg and kubernetes is on this lecture. https://youtu.be/0W49z8hVn0k It’s quite insightful and easy to understand actually.