1.在所有节点安装ipvs软件（Master跟所有的Node节点）
yum -y install ipvsadm ipset
2.检测是否加载
[root@master manifests]# lsmod | grep ip_vs ip_vs_sh 12688 0 ip_vs_wrr 12697 0 ip_vs_rr 12600 54 ip_vs 145458 60 ip_vs_rr,ip_vs_sh,ip_vs_wrr nf_conntrack 139264 7 ip_vs,nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_netlink,nf_conntrack_ipv4 libcrc32c 12644 4 xfs,ip_vs,nf_nat,nf_conntrack
3.没有加载成功则手动执行
cat > /etc/sysconfig/modules/ipvs.modules << EOF #!/bin/bash modprobe -- ip_vs modprobe -- ip_vs_rr modprobe -- ip_vs_wrr modprobe -- ip_vs_sh modprobe -- nf_conntrack_ipv4 EOF chmod 755 /etc/sysconfig/modules/ipvs.modules source /etc/sysconfig/modules/ipvs.modules
4.加载完成后，修改configmap并删除kube-proxy即可完成，在master上
- 修改configmap ，mode: "ipvs"
kubectl edit -n kube-system cm kube-proxy
ipvs: excludeCIDRs: null minSyncPeriod: 0s scheduler: "" strictARP: false syncPeriod: 0s tcpFinTimeout: 0s tcpTimeout: 0s udpTimeout: 0s kind: KubeProxyConfiguration metricsBindAddress: "" mode: "ipvs"
5.查看并删除 kube-proxy
kubectl get pod -n kube-system kubectl delete pod kube-proxy -n kube-system # 或者可以装杯的命令 kubectl get pod -n kube-system |grep kube-proxy |awk '{system("kubectl delete pod "$1" -n kube-system")}'
6.接着查看日志，有打印 Using ipvs Proxier 表示使用成功
kubectl get pod -n kube-system | grep kube-proxy kubectl logs -n kube-system kube-proxy-4c5xj
7.可以看到转发规则了
[root@master manifests]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn
