container.training/slides/k8s/setup-devel.md

Running a local development cluster

• Let's review some options to run Kubernetes locally

• There is no "best option", it depends what you value:

  • ability to run on all platforms (Linux, Mac, Windows, other?)

  • ability to run clusters with multiple nodes

  • ability to run multiple clusters side by side

  • ability to run recent (or even, unreleased) versions of Kubernetes

  • availability of plugins

  • etc.

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CoLiMa

• Container runtimes for LiMa

  (LiMa = Linux on macOS)

• For macOS only (Intel and ARM architectures)

• CLI-driven (no GUI like Docker/Rancher Desktop)

• Supports containerd, Docker, Kubernetes

• Installable with brew, nix, or ports

• More info: https://github.com/abiosoft/colima

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Docker Desktop

• Available on Linux, Mac, and Windows

• Free for personal use and small businesses

  (less than 250 employees and less than $10 millions in annual revenue)

• Gives you one cluster with one node

• Streamlined installation and user experience

• Great integration with various network stacks and e.g. corporate VPNs

• Ideal for Docker users who need good integration between both platforms

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k3d

• Based on K3s by Rancher Labs

• Requires Docker

• Runs Kubernetes nodes in Docker containers

• Can deploy multiple clusters, with multiple nodes

• Runs the control plane on Kubernetes nodes

• Control plane can also run on multiple nodes

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k3d in action

• Install k3d (e.g. get the binary from https://github.com/rancher/k3d/releases)

• Create a simple cluster:

  k3d cluster create petitcluster
  

• Create a more complex cluster with a custom version:

  k3d cluster create groscluster \
        --image rancher/k3s:v1.18.9-k3s1 --servers 3 --agents 5
  

  (3 nodes for the control plane + 5 worker nodes)

• Clusters are automatically added to .kube/config file

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KinD

• Kubernetes-in-Docker

• Requires Docker (obviously!)

• Should also work with Podman and Rootless Docker

• Deploying a single node cluster using the latest version is simple:

  kind create cluster
  

• More advanced scenarios require writing a short config file

  (to define multiple nodes, multiple control plane nodes, set Kubernetes versions ...)

• Can deploy multiple clusters

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MicroK8s

• Available on Linux, and since recently, on Mac and Windows as well

• The Linux version is installed through Snap

  (which is pre-installed on all recent versions of Ubuntu)

• Also supports clustering (as in, multiple machines running MicroK8s)

• DNS is not enabled by default; enable it with microk8s enable dns

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Minikube

• The "legacy" option!

  (note: this is not a bad thing, it means that it's very stable, has lots of plugins, etc.)

• Supports many drivers

  (HyperKit, Hyper-V, KVM, VirtualBox, but also Docker and many others)

• Can deploy a single cluster; recent versions can deploy multiple nodes

• Great option if you want a "Kubernetes first" experience

  (i.e. if you don't already have Docker and/or don't want/need it)

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Rancher Desktop

• Available on Linux, Mac, and Windows

• Free and open-source

• Runs a single cluster with a single node

• Lets you pick the Kubernetes version that you want to use

  (and change it any time you like)

• Emphasis on ease of use (like Docker Desktop)

• Relatively young product (first release in May 2021)

• Based on k3s and other proven components

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VM with custom install

• Choose your own adventure!

• Pick any Linux distribution!

• Build your cluster from scratch or use a Kubernetes installer!

• Discover exotic CNI plugins and container runtimes!

• The only limit is yourself, and the time you are willing to sink in!

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:EN:- Kubernetes options for local development :FR:- Installation de Kubernetes pour travailler en local