16.8.3.2. 无匹配标签的节点关联性

Node1 节点有标签 zone:emea：

$ oc label node node1 zone=emea

pod pod-s1 在节点关联性必要规则下具有 zone 和 us 键/值对：

$ cat pod-s1.yaml
apiVersion: v1
kind: Pod
metadata:
  name: pod-s1
spec:
  containers:
    - image: "docker.io/ocpqe/hello-pod"
      name: hello-pod
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
          - matchExpressions:
            - key: "zone"
              operator: In
              values:
              - us

pod pod-s1 无法调度到 Node1 上：

$ oc describe pod pod-s1

...
Events:
 FirstSeen LastSeen Count From              SubObjectPath  Type                Reason
 --------- -------- ----- ----              -------------  --------            ------
 1m        33s      8     default-scheduler Warning        FailedScheduling    No nodes are available that match all of the following predicates:: MatchNodeSelector (1).