podnodeaffinity.yaml

apiVersion: v1
kind: Pod
metadata:
  name: nodeaffinitypod1
spec:
  containers:
  - name: nodeaffinity1
    image: nginx:latest
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: app
            operator: In #In, NotIn, Exists, DoesNotExist
            values:
            - production
---
apiVersion: v1
kind: Pod
metadata:
  name: nodeaffinitypod2
spec:
  containers:
  - name: nodeaffinity2
    image: nginx:latest
  affinity:
    nodeAffinity:
      preferredDuringSchedulingIgnoredDuringExecution:
      - weight: 1
        preference:
          matchExpressions:
          - key: app
            operator: In
            values:
            - production
      - weight: 2
        preference:
          matchExpressions:
          - key: app
            operator: In
            values:
            - test
---
apiVersion: v1
kind: Pod
metadata:
  name: nodeaffinitypod3
spec:
  containers:
  - name: nodeaffinity3
    image: nginx:latest
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: app
            operator: Exists #In, NotIn, Exists, DoesNotExist