kubernetes - why pods created by the Deployment running on NotReady node all the time

Question

I have three nodes. when I shutdown cdh-k8s-3.novalocal ,pods running on it all the time

# kubectl get node
NAME                  STATUS     ROLES                  AGE   VERSION
cdh-k8s-1.novalocal   Ready      control-plane,master   15d   v1.20.0
cdh-k8s-2.novalocal   Ready      <none>                 9d    v1.20.0
cdh-k8s-3.novalocal   NotReady   <none>                 9d    v1.20.0

# kubectl get pod -o wide
NAME                                READY   STATUS    RESTARTS   AGE     IP              NODE                  NOMINATED NODE   READINESS GATES
nginx-deployment-66b6c48dd5-5jtqv   1/1     Running   0          3h28m   10.244.26.110   cdh-k8s-3.novalocal   <none>           <none>
nginx-deployment-66b6c48dd5-fntn4   1/1     Running   0          3h28m   10.244.26.108   cdh-k8s-3.novalocal   <none>           <none>
nginx-deployment-66b6c48dd5-vz7hr   1/1     Running   0          3h28m   10.244.26.109   cdh-k8s-3.novalocal   <none>           <none>

my yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

# kubectl get deployment
NAME               READY   UP-TO-DATE   AVAILABLE   AGE
nginx-deployment   0/3     3            0           3h28m

I find the Doc

DaemonSet pods are created with NoExecute tolerations for the following taints with no tolerationSeconds:

node.kubernetes.io/unreachable
node.kubernetes.io/not-ready
This ensures that DaemonSet pods are never evicted due to these problems.

But it is DaemonSet and not Deployment

question from:https://stackoverflow.com/questions/65951676/why-pods-created-by-the-deployment-running-on-notready-node-all-the-time

Answer 1

Waitting for answers