k3s_singlenode_using_vagrant_libvirt

Vagrant setup for a k3s singlenode cluster (using the libvirt provider for vagrant)

This setup creates a single VM where k3s can be installed via ansible.

Default OS is openSUSE Leap 15.2, but that can be changed in the Vagrantfile.

Vagrant

1. You need vagrant obviously.
2. Fetch the box, per default this is opensuse/Leap-15.2.x86_64, using vagrant box add opensuse/Leap-15.2.x86_64.
3. Make sure the git submodules are fully working by issuing git submodule init && git submodule update
4. Run vagrant up
5. Run kubectl --kubeconfig ansible/k3s-kubeconfig get nodes and you should see your server node.
6. Party!

Disabling the Ansible provisioning

In case you do not want Ansible to install k3s (because you want to install it yourself), just comment out the following lines in the Vagrantfile:

    node.vm.provision "ansible" do |ansible|
      ansible.compatibility_mode = "2.0"
      ansible.groups = {
        "k3s"  => [ "k3s1" ]
      }
      ansible.playbook = "ansible/playbook-vagrant.yml"
    end # node.vm.provision

Cleaning up

When tearing down the machine, the kubeconfig file that was download does not get deleted unfortunately. To not cause problems the next time you start, just run rm ansible/k3s-kubeconfig and all is well.