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cosckoya
cosckoya

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Kind: Tiniest Kubernetes ever!

#kubernetes #devops #docker #linux

Kind is the smallest, tiniest and funniest Kubernetes runtime I've tried.

Kind could be used for different purposes: to run a local environment, include as a stage on a CD/CD pipeline, test new Kubernetes releases for your OCI compliance images.

Kind requires Docker properly installed on your computer, otherwise it wont deploy anything.

Let's start creating a cluster!

First things to do is install Kind. There are a few ways to install it: Install Go language then run "go get" command or more easy to go, download latest release from the Github repository :D

I already automated this "download" task from my dotfiles, here is the "code":

mkdir ${HOME}/bin ;\ wget -q https://github.com/kubernetes-sigs/kind/releases/latest/download/kind-linux-amd64 -O ${HOME}/bin/kind ;\ chmod u+x ${HOME}/bin/kind ;\ ${HOME}/bin/kind version
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This will prompt you a message like this:

kind v0.10.0 go1.15.7 linux/amd64
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Next step is to create a cluster, to acknoledge this we must run this command:

CMD> kind create cluster --name tiny-k8s-01
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output

So, we now have a running Kind K8s cluster!

There a lot of funny features that makes Kind a versatile K8s tool, like:

  • Run as many K8s clusters as you want: 
for i in {0..4}; do kind create cluster --name tiny-cluster-0$i done
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Cluster list:

CMD> kind get clusters tiny-cluster-00 tiny-cluster-01 tiny-cluster-02 tiny-cluster-03 tiny-cluster-04
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  • Create Kind cluster with different Kubernetes releases: 
CMD> kind create cluster --image kindest/node:v1.19.7 --name tiny-cluster-v19
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Kind images are aviable in this DockerHub registry

There are a lot more features to be used with Kind like Ingress, build images and import into Kind, check your OCI rootless ...

Enjoy!

References:

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