K8s port forwarding helper scripts

add-port-forwarding.sh

#!/bin/bash

APP_NAME="My Application"
SERVICE_NAME="my-service"
POD_LABEL_SELECTOR=app.kubernetes.io/name=my-app
PORT=9400

# check if port-forwarding is already running
if pgrep -f "kubectl port-forward svc/$SERVICE_NAME" > /dev/null; then
  echo "Port forwarding is already active."
  exit 0
fi

echo "Port forwarding not active. Checking if $APP_NAME pod is running..."

# wait until the pod is ready
echo "$APP_NAME pod is running. Checking readiness..."
until kubectl get pods -l "${POD_LABEL_SELECTOR}" -o jsonpath='{.items[0].status.containerStatuses[0].ready}' | grep -q "true"; do
  echo "Waiting for $APP_NAME pod to become ready..."
  sleep 1
done

# start port forwarding
echo "$APP_NAME pod is ready. Starting port forwarding..."
kubectl port-forward svc/$SERVICE_NAME $PORT:$PORT >/dev/null &

kill-port-forwarding.sh

#!/bin/bash

SERVICE_NAME="my-service"

PID=$(pgrep -f "kubectl port-forward svc/$SERVICE_NAME")
if [[ -n $PID ]]; then
  echo "Killing port forwarding (PID: $PID)..."
  kill "$PID"
fi