Build a 3-node Kubernetes cluster home lab in 5 minutes (*)

April 4, 2023 1 minute read

I use the lightweight Kubernetes K3s on a 3-node Raspberry Pi 4 cluster. I wrote a few blog posts on how the Raspberry Pi’s are installed.

I run K3s on virtual machines.

Why virtual machines?

Virtual makes it easier to redeploy or to bring a system down and up if your want to test something.

Another reason is that I also run FreeBSD virtual machines on the Raspberry Pis.

I use Debian GNU/Linux as the Operating system with KVM/libvirt as the hypervisor.

I use Ansible to set up the cluster in an automated way. Got finality the time to clean up the code a bit and release it on Github: https://github.com/stafwag/ansible-k3s-on-vms

Ansible role: users 1.2.0 released

March 6, 2023 6 minute read

The Ansible role stafwag.users is available at: https://github.com/stafwag/ansible-role-users

This release implements a shell parameters to define shell for an user. See the github issue for more details.

ChangeLog

shell parameter

shell parameter added

Have fun!

Ansible role: delegated_vm_install 1.1.0 released

January 29, 2023 4 minute read

I use KVM and cloud-init to provision virtual machines on my home network. I migrated all my services to Raspberry PIs running GNU/Linux and FreeBSD to save power.

I first wanted to use terraform, but the libvirt terraform provider wasn’t compatible with arm64 (at least at that time).

So I started to create a few ansible roles to provision the virtual machines.

delegated_vm_install is a wrapper around these roles to provision the virtual machine in a delegated way. It allows you to specify the Linux/libvirt KVM host as part of the virtual machine definition.

Changelog

delegated_vm_install 1.1.0

update_ssh_known_hosts directive added
- update_ssh_known_hosts directive added to allow to update the ssh host key after the virtual machine is installed.
- Documentation updated
- Debug code added

Have fun!