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Setup Kubernetes on Mac
October 08, 2021
Setup Kubernetes on Mac There are a few options for installing a Kubernetes development environment on a Mac: Minikube, KiND, K3d (K3s). I'll use K3d here because it has a small footprint, and it more closely matches the K8s production environment with Rancher that I work with.
Requirements
Install K3d
K3d is a lightweight wrapper to run k3s (Rancher Lab’s minimal Kubernetes distribution) in Docker. The latest K3d version can be installed with brew install k3d
(and removed with brew remove kd3
). It installs to "/usr/local/bin"
If the latest version of K3s is incompatible with something else in your stack, install a specific version TAG like:
curl -s https://raw.githubusercontent.com/rancher/k3d/main/install.sh | TAG=v4.4.7 bash
Check version
k3d --version
expected output
k3d version v4.4.7
k3s version **v1.21.2**-k3s1 (default)
Create a cluster
k3d cluster create
Clear cache and start from scratch
k3d cluster delete
- only deletes default cluster
k3d cluster delete k3s-rancher
k3d cluster delete k3s-wordpress
rm -rf /Users/macusername/.kube/cache/*
rm /Users/macusername/.kube/config
Install Helm
Helm is a package manager for Kubernetes, which coordinates the download, installation, and deployment of apps. It defines an application as a collection of related Kubernetes resources.
Install Helm with brew
brew install helm@3
Check version
helm version
expected output
version.BuildInfo{Version:"v3.7.0", GitCommit:"eeac83883cb4014fe60267ec6373570374ce770b", GitTreeState:"clean", GoVersion:"go1.17"}
Install kubectl (kubernetes-cli)
The latest kubernetes-cli can be installed with brew install kubectl
.
If the latest version of K3s is incompatible with something else in your stack, see Install and Set Up kubectl on macOS for the right binary that works with your macOS type, and install a specific GitVersion release like:
curl -LO "https://dl.k8s.io/release/v1.21.2/bin/darwin/amd64/kubectl" && \
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl && \
sudo chown root: /usr/local/bin/kubectl
Check version
kubectl version
expected output
Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"**v1.21.2**", GitCommit:"092fbfbf53427de67cac1e9fa54aaa09a28371d7", GitTreeState:"clean", BuildDate:"2021-06-16T12:59:11Z", GoVersion:"go1.16.5", Compiler:"gc", Platform:"darwin/amd64"}
Create a Default Cluster (test)
k3d cluster create
kubectl config use-context k3d-k3s-default
Get info
kubectl cluster-info
kubectl get nodes
Backout
k3d cluster delete
Create a Rancher Cluster
k3d cluster create k3s-rancher \
--api-port 6550 \
--servers 1 \
--agents 3 \
--port 443:443@loadbalancer
Get info
kubectl cluster-info
kubectl get nodes,all
Backout
k3d cluster delete k3s-rancher
docker image rm ... the images ...
References
Install k3d/k3s, helm, kubectl, Rancher
Install Helm