Generating sample yaml file in k8s

you can just run with –dry-run=client option to generate yaml file. Which is then you can add any other elements or delete

if you pass –env variables in the command even that also will added to the yaml file .

run –env env=prod nginx –image=nginx –dry-run=client -o yaml

root@master:/tmp# k run --env env=prod nginx --image=nginx --dry-run=client -o yaml
apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: nginx
  name: nginx
spec:
  containers:
  - env:
    - name: env
      value: prod
    image: nginx
    name: nginx
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Always
status: {}
root@master:/tmp#