老师，k8s集群安装提示flannel的插件pod安装失败
NAME READY STATUS RESTARTS AGE
coredns-6d56c8448f-fddq6 1/1 Running 0 21m
coredns-6d56c8448f-hdwpq 1/1 Running 0 21m
etcd-master 1/1 Running 0 21m
kube-apiserver-master 1/1 Running 0 21m
kube-controller-manager-master 1/1 Running 0 21m
kube-flannel-ds-7vws2 1/1 Running 0 6m30s
kube-flannel-ds-97wtx 0/1 Error 4 115s
kube-flannel-ds-mkq2v 0/1 CrashLoopBackOff 4 2m26s
kube-proxy-6rvpl 1/1 Running 0 115s
kube-proxy-dvgjm 1/1 Running 0 21m
kube-proxy-f2wpw 1/1 Running 0 2m26s
kube-scheduler-master 1/1 Running 0 21m

这种错误如何排查解决呢