K8s install Minikube

(Oficial Doc: https://minikube.sigs.k8s.io/docs/start/)

Technology to quickly set up a Kubernetes cluster locally to learn how to use Kubernetes.


How to install on a fresh Ubuntu installation:

Install prerrequisites and kubectl

sudo apt-get update && sudo apt-get install -y apt-transport-https curl

curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list

sudo apt-get update
sudo apt-get install -y kubectl

Prepare kubectl to make it executable

cd /usr/bin
sudo chmod +x ./kubectl

Here you can either install a Hypervisor or Docker. I’m going with Docker.

# remove old versions
sudo apt-get remove docker docker-engine docker.io containerd runc

# docker prerrequisites
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg lsb-release

# add docker key
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

# setup stable repository
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# install docker
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io

# verify docker installation
sudo docker run hello-world

(optional) run docker without sudo

sudo groupadd docker
sudo gpasswd -a $USER docker

Install Minikube

curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 \
  && chmod +x minikube
sudo mv minikube /usr/bin

# add user to docker group
sudo usermod -aG docker $USER && newgrp docker

# confirm installation
minikube start
minikube dashboard


minikube start
minikube stop
minikube status

minikube ip
minikube logs
minikube ssh

minikube help

Launch single node K8s cluster

# start VM with cluster running inside
minikube start --wait=false
# cluster details and health status
kubectl cluster-info
# shows nudes in the cluster
kubectl get nodes

kubectl create deployment first-deployment --image=katacoda/docker-http-server
kubectl expose deployment first-deployment --port=80 --type=NodePort

This starts a VM for you with a K8s cluster running inside. This cluster can be interacted with using kubectl. This is the main approach for managing K8s and the apps running on top of the cluster.

Launch multi cluster

# create a cluster for dev environment
minikube start -p dev

# see a list of all profiles
minikube profile list

# change to dev profile
minikube profile dev


https://docs.docker.com/engine/install/ubuntu/ https://k8s-docs.netlify.app/en/docs/tasks/tools/install-minikube/ https://minikube.sigs.k8s.io/docs/start/ https://katacoda.com/courses/kubernetes/launch-single-node-cluster