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I want to evaluate the benefits of having a Pi Kubernetes cluster.

Mostly I read that this project is about learning Kubernetes and hosting personal websites. Well, I understand that the learning can be great but it seems to me when this argument is taken out what real useful use cases remain. And I would say hosting personal websites seems a little overkill.

Let me be clear I really like to build a cluster and love building stuff but this just looks like one of these projects that just takes a lot of time and effort.

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The same as Kubernetes on other machines, it has the same benefit on a group (more that one raspberry pi) of Raspberry Pis.

What is Kubernetes?

Kubernetes is a vendor-agnostic cluster and container management tool, open-sourced by Google in 2014. It provides a “platform for automating deployment, scaling, and operations of application containers across clusters of hosts”. Above all, this lowers the cost of cloud computing expenses and simplifies operations and architecture.

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lightweight Kubernetes on Raspberry Pi

The RAM and CPU requirements on the master node of Kubernetes overwhelmed the raspberry pi. This caused poor performance when doing various Kubernetes tasks. It also made an in-place upgrade of Kubernetes impossible.

As a result, there is the k3s project here as a solution. The K3s has built as a "lightweight Kubernetes" for use in resource-constrained environments. It is also optimized for ARM processors. This makes running a Raspberry Pi-based Kubernetes cluster much more feasible.

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