Install K3S on Ubuntu 20.04

Posted by : mransley at Feb 28, 2022

I am mucking around a bit with a homelab and thought I would look into K3s. To start, I created an absolutely vanilla Ubuntu 20.04 Server instance with 8Gb of Memory and 30Gb of disk. Then I ran the following command:

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

The output of the command is as follows:

[INFO]  Finding release for channel stable
[INFO]  Using v1.22.6+k3s1 as release
[INFO]  Downloading hash https://github.com/k3s-io/k3s/releases/download/v1.22.6+k3s1/sha256sum-amd64.txt
[INFO]  Downloading binary https://github.com/k3s-io/k3s/releases/download/v1.22.6+k3s1/k3s
[INFO]  Verifying binary download
[INFO]  Installing k3s to /usr/local/bin/k3s
[INFO]  Skipping installation of SELinux RPM
[INFO]  Creating /usr/local/bin/kubectl symlink to k3s
[INFO]  Creating /usr/local/bin/crictl symlink to k3s
[INFO]  Creating /usr/local/bin/ctr symlink to k3s
[INFO]  Creating killall script /usr/local/bin/k3s-killall.sh
[INFO]  Creating uninstall script /usr/local/bin/k3s-uninstall.sh
[INFO]  env: Creating environment file /etc/systemd/system/k3s.service.env
[INFO]  systemd: Creating service file /etc/systemd/system/k3s.service
[INFO]  systemd: Enabling k3s unit
Created symlink /etc/systemd/system/multi-user.target.wants/k3s.service → /etc/systemd/system/k3s.service.
[INFO]  systemd: Starting k3s

You should then be able to query the node details running:

sudo k3s kubectl get node

Which should output something like the following

NAME   STATUS   ROLES                  AGE    VERSION
k3s    Ready    control-plane,master   3m4s   v1.22.6+k3s1

About Michael Ransley

Hi, I am a Husband, Father of 3 children and Principal Data Engineer at Origin Energy. I am interested in many things - but technology is certainly one of them - both how to solve particular issues but also the effects that technology has on our society.

Website : https://michael.ransley.co