/etc/yum.repos.d/nginx.repo
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/6/x86_64/
gpgcheck=0
enabled=1
(
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled=1
)
find repo from http://nginx.org/packages
yum install nginx
(yum update)
原文：http://www.cnblogs.com/ly-radiata/p/6196492.html