create a pod that starts a shell and stops when exiting

kube admin army-knife

# Run a pod and exec into it to run curl commands. Pod will self delete on exit.  
kubectl run curlpod-debug -i --tty --image=appropriate/curl --restart=Never --rm -- sh

# To run in a specific node:
apiVersion: v1
kind: Pod
metadata:
  name: curlpod-debug
  labels:
    app: curl-debug
spec:
  nodeSelector:
    kubernetes.io/hostname: NODE_NAME
  containers:
  - name: curl
    image: appropriate/curl
    imagePullPolicy: IfNotPresent
    command:
      - sleep
      - "3600"