nginx-deployment.yaml

cat <<EOF | kubectl apply -f -
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 2
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:latest
        resources:
          requests:
            memory: "100Mi"
            cpu: "250m"
          limits:
            memory: "250Mi"
            cpu: "500m" 
EOF
deployment.apps/nginx-deployment created