Ubuntu下安裝nginx，直接apt-get install nginx就行了，很方便。
但是今天裝了CentOS6.2，直接yum install nginx不行，要先處理下源，下面是安裝完整流程，也十分簡單：
1、CentOS 6，先執行：
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，安裝並啟動nignx
[root@server ~]# yum install nginx
[root@server ~]# service nginx start
Starting nginx: [ OK ]
4，然後進入浏覽器，輸入http://192.168.0.161/測試，如果看到
Welcome to nginx!
If you see this page, the nginx web server is successfully installed and working. Further configuration is required.
For online documentation and support please refer to nginx.org.
Commercial support is available at nginx.com.
Thank you for using nginx.
恭喜你，你成功了！
如果不能連接到nginx，原因很多，但是可以先檢查 1,nginx服務是否真的起來了；2,linux服務器防火牆是否打開
