Kubernetes debugging pod based on praqma/network-multitool image

k8s_debug_pod.sh

#!/bin/zsh
set -euo pipefail

if [[ "$#" -ne 1 ]];
then
  echo "Set the namespace by passing in a single argument"
fi

IMAGE="praqma/network-multitool:alpine-extra"
NAMESPACE=$1
echo "Namespace: $1"

cat <<EOF | kubectl apply -n $NAMESPACE -f -
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: debug
spec:
  podSelector:
  ⦙ matchLabels:
  ⦙ ⦙ app: debug
  policyTypes:
  - Egress
  egress:
  - {}
EOF
kubectl run -i -t -n $NAMESPACE --rm debug -l app=debug --image=$IMAGE --wait=true --restart=Never -- /bin/bash

kubectl delete netpol debug