修改kube-proxy为ipvs模式

PS：基于kubeadm部署的k8s集群

1、开启netfilter模块
modprobe br_netfilter

2、修改内核参数，开启内核转发
cat >> /etc/sysctl.conf << mm
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
mm

sysctl -p   #立即生效

3、启用ipvs模块，下面是启用脚本
#!/bin/bash
ipvs_mods_dir="/usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs"
for i in $(ls $ipvs_mods_dir|grep -o "^[^.]*")
do
 /sbin/modinfo -F filename $i &>/dev/null
 if [ $? -eq 0 ];then
  /sbin/modprobe $i
 fi
done

4、修改kube-proxy在k8s中的cm文件，修改完记得重启proxy的pod，并查看log
kubectl edit cm kube-proxy -n kube-system

 kind: KubeProxyConfiguration
 metricsBindAddress: ""
 mode: "ipvs"
 nodePortAddresses: null