drain.yml

---
apiVersion: v1
kind: Namespace
metadata:
  name: httpd
---
apiVersion: v1
kind: Service
metadata:
  name: httpd-service-datacenter
  namespace: httpd
  labels:
    app: httpd-app-datacenter
spec:
  type: LoadBalancer
  ports:
    - nodePort: 30004
      port: 80
      targetPort: 80
  selector:
    app: httpd-app-datacenter

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: http-deploy
  namespace: httpd
spec:
  selector:
    matchLabels:
      app: httpd-app-datacenter
  replicas: 4
  template:
    metadata:
      labels:
        app: httpd-app-datacenter
    spec:
      topologySpreadConstraints:
      - maxSkew: 1
        topologyKey: kubernetes.io/hostname
        whenUnsatisfiable: DoNotSchedule
        labelSelector:
         matchLabels:
          app: httpd-app-datacenter
      containers:
      - name: httpd-app-datacenter
        image: httpd:latest
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80