vkignite

Prepare K8s

How to run Kubernetes with Ignite support:

$ docker-compose -f vkignite.yaml up

Wait until kubeconfig.yaml is written into the current dir.

$ export KUBECONFIG=$PWD/kubeconfig.yaml

Run get nodes and you'll see:

$ kubectl get nodes
NAME     STATUS   ROLES   AGE     VERSION
ignite   Ready    agent   5h12m   v1.14.3-ignite-f5516fe-dev

Define a Virtual Machine

Apply the Custom Resource Definition to Kubernetes to allow VM creation via kubectl.

$ kubectl apply -f crd/vm_crd.yaml

Then open an editor to define a VM with the above CRD.

apiVersion: chanwit.github.com/v1alpha1
kind: VirtualMachine
metadata:
  name: my-vm
spec:
  kernel: weaveworks/ignite-kernel:4.19.47
  image: weaveworks/ignite-ubuntu:latest
  cpus: 1
  memory: 512M
  diskSize: 1GB

save it as examples/my-vm.yaml. The VirtualMachine CRD is the simplified counter-part of Ignite's v1alpha1 config.

Provision the VM

We then could be able to create a VM by:

$ kubectl apply -f examples/my-vm.yaml

To see that the VM is already provisioned:

$ kubectl get vm,pod
NAME                                      CPUS   MEMORY   SIZE   STATE
virtualmachine.chanwit.github.com/my-vm   1      512M     1GB    Running

NAME        READY   STATUS    RESTARTS   AGE
pod/my-vm   1/1     Running   0          12m

Then you now will be able to use sudo ignite ssh default__my-vm to get into the VM. The VM name is in the {namespace}__{name} pattern.

To delete the VM,

$ kubectl delete vm my-vm