Kubernetes failed to setup network for pod after executed kubeadm reset

Question

I initialized Kubernetes with kubeadm init, and after I used kubeadm reset to reset it I found --pod-network-cidr was wrong. After correct

Answer 1

After kubeadm reset and before kubeadm init do the following on master and worker nodes:

1. kubeadm reset
2. systemctl stop kubelet & systemctl stop docker
3. rm -rf /var/lib/cni/
4. rm -rf /var/lib/kubelet/*
5. rm -rf /etc/cni/
6. ifconfig cni0 down & ip link delete cni0
7. ifconfig flannel.1 down & ip link delete flannel.1
8. ifconfig docker0 down

Tested with kubernetes server version: v1.13.2 & flannel: v0.10.0-amd64

github issue reference