参考文档: https://github.com/kubernetes/kubernetes/blob/master/pkg/proxy/ipvs/README.md
检查内核版本，如果内核版本超过4.19，则需要安装 nf_conntrack 而不是 nf_conntrack_ipv4

[root@maxiaoke deploy-kubernetes]# cat conf/k8s-module.conf
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
br_netfilter
[root@maxiaoke deploy-kubernetes]# gosh push -i node.ip conf/k8s-module.conf /etc/modules-load.d/
[root@maxiaoke deploy-kubernetes]# gosh cmd -i node.ip "awk '{print \"modprobe --\",\$1}' /etc/modules-load.d/k8s-module.conf|bash"
# 确保上述的几个模块都已经加载成功
[root@maxiaoke deploy-kubernetes]# gosh cmd -i node.ip "cut -f1 -d ' '  /proc/modules | grep -E 'ip_vs|nf_conntrack|br_netfilter'"|xargs -n 7
10.4.7.81 br_netfilter ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
10.4.7.88 br_netfilter ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
10.4.7.86 br_netfilter ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
10.4.7.85 br_netfilter ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
10.4.7.87 br_netfilter ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
10.4.7.84 br_netfilter ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
# 安装ipvsadm客户端工具
[root@maxiaoke deploy-kubernetes]# gosh cmd -i node.ip --print.status failed "yum install -y ipset ipvsadm"