服务器内核不一致，引起weave-net运行异常CrashLoo

1、首先检查下防火墙有没有关闭:

systemctl status ufw 

systemctl stop ufw

systemctl disable firewalld

2、weave-net报错信息如下：

root@master:/# kubectl logs weave-net-bdz5p -c weave --namespace=kube-system

modprobe: can't change directory to '/lib/modules': No such file or directory

Ignore the error if "br_netfilter" is built-in in the kernel

modprobe: can't change directory to '/lib/modules': No such file or directory

Ignore the error if "xt_set" is built-in in the kernel

FATA: 2022/10/23 02:57:51.579386 [kube-peers] Could not get peers: Get "https://10.96.0.1:443/api/v1/nodes": dial tcp 10.96.0.1:443: i/o timeout

Failed to get peers

查看服务器内核

uname -r

uname -r : 显示操作系统的发行版号 

uname -a :显示系统名、节点名称、操作系统的发行版号、内核版本等等。

【ERROR】对应node1内核kernel有问题，查看是否与master的内核一致kernel，如果真是内核的问题：参考：https://www.jianshu.com/p/cccc2982f604

Ignore the error if "br_netfilter" is built-in in the kernel

不能通过简单粗暴的搭建路由解决问题：

https://qa.1r1g.com/sf/ask/2791063271/