1. 文档

https://kubernetes.io/zh-cn/docs/concepts/scheduling-eviction/assign-pod-node/

2. 说明

nodeSelector 是节点选择约束的最简单推荐形式。

你可以将 nodeSelector 字段添加到 Pod 的规约中设置你希望目标节点所具有的节点标签。 Kubernetes 只会将 Pod 调度到拥有你所指定的每个标签的节点上。

3. 实例

此处省略各种前提

3.1. zookeeper部署选择master.cluster.k8s的节点

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: kafka
  namespace: kafka
spec:
  selector:
    matchLabels:
      app: kafka
  serviceName: kafka-svc
  replicas: 3
  template:
    metadata:
      labels:
        app: kafka
    spec:
      nodeSelector:
          kubernetes.io/hostname: master.cluster.k8s

3.2. 效果

只部署在mster.cluster.k8s

qiteck@server:~/program/docker_service/kafka$ sudo kubectl get pods -n kafka -o wide
NAME      READY   STATUS    RESTARTS   AGE     IP             NODE                 NOMINATED NODE   READINESS GATES
kafka-0   1/1     Running   0          4m34s   10.244.0.162   master.cluster.k8s   <none>           <none>
kafka-1   1/1     Running   0          89s     10.244.0.163   master.cluster.k8s   <none>           <none>
kafka-2   1/1     Running   0          67s     10.244.0.164   master.cluster.k8s   <none>           <none>