report errors:

1, check calico

kubectl get pods -n kube-system

Calico-node 0/1 Running

2. check the log

kubectl describe calico-node-gdv9r -n kube-system

Calico error:
Readiness probe failed: calico/node is not ready: BIRD is not ready: Error querying BIRD: unable to connect to BIRDv4 socket: dial unix /var/run/bird/bird.ctl: connect: no such file or directory

Solution:

1. Remove the DOWN NIC/interface that Docker and Calico errors.

ip link docker0

2, delete Calico pod (pod will be rebuilt and run by k8s cluster after deletion)

kubectl delete pod calico-node-gdv9r -n kube-system

3, check Calico again and find it is normal</ font>

kubectl get pods -n kube-system