linux-ubuntu-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: ubuntu-deployment
  labels:
    app: ubuntu
spec:
  replicas: 1
  selector:
    matchLabels:
      app: ubuntu
  template:
    metadata:
      labels:
        app: ubuntu
    spec:
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - podAffinityTerm:
              labelSelector:
                matchExpressions:
                - key: app
                  operator: In
                  values:
                  - ubuntu
              topologyKey: kubernetes.io/hostname
            weight: 100
      containers:
      - name: ubuntu
        image: ubuntu
        command: ["sleep", "123456"]
      nodeSelector:
        kubernetes.io/os: linux