在kubernetes集群中部署pod出错

Question

我正在尝试将kubernetes集群中的这个yaml部署到我的一个节点中

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment-1
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

但是，当我尝试使用命令部署它时，我收到以下错误消息

pi@k8s-master-rasp4:~ $ kubectl apply -f despliegue-nginx.yaml -l kubernetes.io/hostname=k8s-worker-1
error: no objects passed to apply

有人知道问题出在哪里吗？

谢谢

Answer 1

不允许将标签选择器(-l)与kubectl apply...一起使用。

使用nodeSelector将pods分配给特定节点：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment-1
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      nodeSelector:
        kubernetes.io/hostname: k8s-worker-1 # <-- updated here!
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80