Installing and setting up k3s single node

readme.md

Installing and setting up k3s single node

K3s - Lightweight Kubernetes

k8s is 10-char-word but k3s is 5-char-word which is half.

Install

See https://docs.k3s.io/quick-start#install-script

curl -sfL https://get.k3s.io | sh -

To set up credentials and adjust permissions

Initiall it's only allowed to root account

So kubectl from user account will fail

$ k3s kubectl version
WARN[0000] Unable to read /etc/rancher/k3s/k3s.yaml, please start server with --write-kubeconfig-mode to modify kube config permissions 
error: error loading config file "/etc/rancher/k3s/k3s.yaml" : open /etc/rancher/k3s/k3s.yaml: permission denied

To use kubectl from your account, see this

set KUBECONFIG

put following in either .profile, .zshrc, .bashrc

export KUBECONFIG=~/.kube/config

to make it applied, do either

• source ~/.zshrc
• sudo su - $USER
• reconnect ssh

create .kube

mkdir ~/.kube 2> /dev/null
sudo chown $USER:$USER ~/.kube
sudo k3s kubectl config view --raw | tee ~/.kube/config
chmod 600 "$KUBECONFIG"