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.

---

Docker Desktop

• Available on Mac and Windows

• Gives you one cluster with one node

• Rather old version of Kubernetes

• Very easy to use if you are already using Docker Desktop:

  go to Docker Desktop preferences and enable Kubernetes

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

---

k3d

• Based on K3s by Rancher Labs

• Requires Docker

• Runs Kubernetes nodes in Docker containers

• Can deploy multiple clusters, with multiple nodes, and multiple master nodes

• As of June 2020, two versions co-exist: stable (1.7) and beta (3.0)

• They have different syntax and options, this can be confusing

  (but don't let that stop you!)

---

k3d in action

• Get k3d beta 3 binary on https://github.com/rancher/k3d/releases

• Create a simple cluster:

  k3d create cluster petitcluster --update-kubeconfig
  

• Use it:

  kubectl config use-context k3d-petitcluster
  

• Create a more complex cluster with a custom version:

  k3d create cluster groscluster --update-kubeconfig \
        --image rancher/k3s:v1.18.3-k3s1 --masters 3 --workers 5 --api-port 6444
  

  (note: API port seems to be necessary when running multiple clusters)

---

KinD

• Kubernetes-in-Docker

• Requires Docker (obviously!)

• 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 master nodes, set Kubernetes versions ...)

• Can deploy multiple clusters

---

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)

---

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

---

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!

???

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