我可以在节点亲和力中定义多个具有优先级或"weight"的节点吗？

Question

我的集群中有一个kubernetes pod和4个节点。如果可用，我想首先将该pod调度到node-2，然后将node-4、node-3和最后优先级调度到node-1。假设node-x是内置的kubernetes.io/hostname值，是否有任何方法可以为nodeAffinity中的这4个节点定义优先级？

这就是我尝试过的：

nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- node-2
- node-4
- node-3
- node-1

然而，吊舱似乎总是指向节点1。

Answer 1

这似乎在起作用：

nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: node-type
operator: In
values:
# a common label applied to all nodes
- node-label
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 100
preference:
matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- node-2
- weight: 50
preference:
matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- node-4
- weight: 20
preference:
matchExpressions:
- key: kubernetes.io/hostname
operator: In
values:
- node-3
.
.
and so on