Simple Workload

Creating a sample Confidential Containers workload

Once you’ve used the Helm charts to install Confidential Containers, you can run a pod with CoCo by simply adding a runtime class. First, we will use the kata-qemu-coco-dev runtime class which uses CoCo without hardware support. Initially we will try this with an unencrypted container image.

In this example, we will be using the nginx image as described in the following yaml:

apiVersion: v1
kind: Pod
metadata:
  labels:
    run: nginx
  name: nginx
  annotations:
    io.containerd.cri.runtime-handler: kata-qemu-coco-dev
spec:
  containers:
  - name: nginx
    image: nginx:1.29.4
  dnsPolicy: ClusterFirst
  runtimeClassName: kata-qemu-coco-dev

For the most basic workloads, setting the runtimeClassName and runtime-handler annotation is usually the only requirement for the pod YAML.

Create a pod YAML file as previously described (we named it nginx.yaml) .

Create the workload:

kubectl apply -f nginx.yaml

Output:

pod/nginx created

Ensure the pod was created successfully (in running state):

kubectl get pods

Output: