# Scale a deployment to 3 replicas
kubectl scale deployment my-deployment --replicas=3

# Start a debugging session in a running Pod
kubectl exec -it pod-name -- /bin/sh

# Sample Kubernetes Job configuration
apiVersion: batch/v1
kind: Job
metadata:
  name: example-job
spec:
  template:
    spec:
      containers:
      - name: example
        image: busybox
        command: ["echo", "Hello Kubernetes"]
      restartPolicy: Never

# Check resource usage for nodes and namespaces
kubectl top nodes
kubectl top pods --namespace=my-namespace

# Update the image version for a deployment with zero downtime
kubectl set image deployment/my-deployment my-container=myimage:v2