参考：

 

kubeadm reset

systemctl stop kubelet

systemctl stop docker

ifconfig cni0 down

ifconfig flannel.1 down

ifconfig del flannel.1

ifconfig del cni0

ip link del flannel.1

ip link del cni0

yum install bridge-utils

brctl delbr flannel.1

brctl delbr cni0

rm -rf /var/lib/cni/flannel/* && rm -rf /var/lib/cni/networks/cbr0/* && ip link delete cni0 && rm -rf /var/lib/cni/network/cni0/*