Create Daemonset using kubectl?

Question

I took the CKA exam and I needed to work with Daemonsets for quite a while there. Since it is much faster to do everything with kubectl instead of creating yaml manifests for k8s resources, I was wondering if it is possible to create Daemonset resources using kubectl.

I know that it is NOT possible to create it using regular kubectl create daemonset at least for now. And there is no description of it in the documentation. But maybe there is a way to do that in some different way?

The best thing I could do right now is to create Deployment first like kubectl create deployment and edit it's output manifest. Any options here?

Answer 1

The fastest hack is to create a deployment file using

kubectl create deploy nginx --image=nginx --dry-run -o yaml > nginx-ds.yaml

Now replace the line kind: Deployment with kind: DaemonSet in nginx-ds.yaml and remove the line replicas: 1

However, the following command will give a clean daemonset manifest considering that "apps/v1" is the api used for DaemonSet in your cluster

kubectl create deploy nginx --image=nginx --dry-run -o yaml | \
    sed '/null\|{}\|replicas/d;/status/,$d;s/Deployment/DaemonSet/g' > nginx-ds.yaml

You have your nginx DaemonSet.