nginx [engine x] is an HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server, originally written by Igor Sysoev. For a long time, it has been running on many heavily loaded Russian sites including Yandex, Mail.Ru, VK, and Rambler. According to Netcraft, nginx served or proxied 24.86% busiest sites in July 2018. Here are some of the success stories: Dropbox, Netflix, Wordpress.com, FastMail.FM.
Nginx 官网

使用 RPM 升级 Nginx 软件包

rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

安装 Nginx

yum install -y nginx

创建 Nginx 服务开机启动项

systemctl enable nginx

启动 Nginx 服务

systemctl start nginx

查看 Nginx 版本

nginx -v