K8 yml file to host ctf challenges over GCP using HaProxy

k8-deployment.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: challenge-name # REPLACE challenge-name and challenge-category to your challenges's name and category
  labels:
    category: challenge-category # We assign labels to the deployment to link it to a service later, and to help manage deployments
    challenge: challenge-name
spec:
  replicas: 3 # The no of replicas sets the no of instances/pods of the challenge deployed on the cluster
  selector:
    matchLabels:
      category: challenge-category
      challenge: challenge-name
  template:
    metadata:
      labels:
        category: challenge-category
        challenge: challenge-name
    spec:
      containers:
      - name: challenge-container
        image: gcr.io/project-id/challenge-image:tag # Set this URL to your challenge container's image
        resources: # Resource limits for the container. These are important, in case people manage to max out CPU/RAM on your challenge
          limits:
            cpu: 100m
            memory: 150Mi
          requests:
            cpu: 10m
            memory: 30Mi
        ports: # Port exposed by the container, you can add multiple
        - containerPort: 9999
          name: port-9999
---
apiVersion: v1
kind: Service
metadata: # Set the challenge-name/challenge-category SAME as the deployment, otherwise they won't link to each other
  name: challenge-name
  labels:
    category: challenge-category
    challenge: challenge-category
spec:
  type: NodePort
  selector:
    category: challenge-category
    challenge: challenge-name
  ports:
    - port: 9999 # The port exposed by the container
      name: port-9999
      targetPort: 9999 # The port exposed by the container
      nodePort: 30001 # The port that is exposed on each Node on the cluster