1. 安装软件包

openssl openssl-devel lzo lzo-devel pam pam-devel automake pkgconfig makecache
yum -y install epel-release
yum -y install openvpn easy-rsa 

https://www.163yun.com/help/documents/157215178789933056

https://openvpn.net/community-resources/how-to/#quick

https://qhh.me/2019/06/16/Cenos7-%E4%B8%8B%E6%90%AD%E5%BB%BA-OpenVPN-%E8%BF%87%E7%A8%8B%E8%AE%B0%E5%BD%95/

网易云部署方案 https://www.163yun.com/help/documents/125681593272684544 wget https://nos-public.nos-eastchina1.126.net/vpn -O openvpn-install.sh && bash openvpn-install.sh

官方安装脚本 https://github.com/Angristan/OpenVPN-install