Ubuntu下安装Nginx，直接apt-get install Nginx就行了，很方便。
但是今天装了CentOS6.2，直接yum install Nginx不行，要先处理下源，下面是安装完整流程，也十分简单：
1、CentOS 6，先执行：
rpm -ivhhttp://Nginx.org/packages/centos/6/noarch/RPMS/Nginx-release-centos-6-0.el6.ngx.noarch.rpm
2，查看yum的Nginx信息
[]# yum info Nginx
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirror.esocc.com
* extras: mirror.esocc.com
* updates: mirror.esocc.com
base | 3.7 kB 00:00
base/primary_db | 4.4 MB 00:28
extras | 3.5 kB 00:00
extras/primary_db | 19 kB 00:00
Nginx | 2.9 kB 00:00
Nginx/primary_db | 22 kB 00:00
updates | 3.5 kB 00:00
updates/primary_db | 2.1 MB 00:10
Installed Packages
Name : Nginx
Arch : x86_64
Version : 1.4.0
Release : 1.el6.ngx
Size : 874 k
Repo : installed
From repo : Nginx
Summary : Nginx is a high performance web server
URL : http://Nginx.org/
License : 2-clause BSD-like license
Description : Nginx [engine x] is an HTTP and reverse proxy server,as well as
: a mail proxy server
3，安装并启动nignx
[root@server ~]# yuminstall Nginx
[root@server ~]# service Nginx start
Starting Nginx: [ OK ]
4，然后进入浏览器，输入http://192.168.0.161/测试，如果看到
Welcome to Nginx!
If you see this page,the Nginx web server is successfully installed and working. Further configuration is @R_404_103@.
For online documentation and support please refer tonginx.org.
Commercial support is available atnginx.com.
Thank you for using Nginx.
恭喜你，你成功了！
如果不能连接到Nginx，原因很多，但是可以先检查 1,Nginx服务是否真的起来了；2,linux服务器防火墙是否打开
