Nginx是一款轻量级的Web 服务器/反向代理服务器及电子邮件（IMAP/POP3）代理服务器，并在一个BSD-like 协议下发行。由俄罗斯的程序设计师Igor Sysoev所开发，供俄国大型的入口网站及搜索引擎Rambler（俄文：Рамблер）使用。其特点是占有内存少，并发能力强。
1、创建一个文件 /etc/yum.repos.d/nginx.repo，并将一下内容复制到文件中：
[nginx] name=nginx repo baseurl=http://nginx.org/packages/centos/$releasever/$basearch/ gpgcheck=0 enabled=1
2、编辑并保存/etc/yum.repos.d/nginx.repo文件后，执行yum list | grep nginx 命令查看最新稳定版，如下：
[root@localhost yum.repos.d]# yum list | grep nginx nginx-filesystem.noarch 1.0.15-11.el6 installed collectd-nginx.x86_64 4.10.9-1.el6 epel munin-nginx.noarch2.0.25-1.el6 epel nginx.x86_64 1.6.2-1.el6.ngx nginx nginx-debug.x86_641.6.2-1.el6.ngx nginx nginx-debuginfo.x86_64 1.6.2-1.el6.ngx nginx nginx-nr-agent.noarch 2.0.0-4.el6.ngx nginx owncloud-nginx.noarch 6.0.6-1.el6 epel
3、执行yum -y install nginx安装，信息如下：
[root@localhost yum.repos.d]# yum -y install nginx Loaded plugins: security Setting up Install Process Resolving Dependencies There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them. --> Running transaction check ---> Package nginx.x86_64 0:1.6.2-1.el6.ngx will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================================================== Package Arch Version Repository Size ================================================================================================================== Installing: nginx x86_64 1.6.2-1.el6.ngx nginx 336 k Transaction Summary ================================================================================================================== Install 1 Package(s) Total download size: 336 k Installed size: 828 k Downloading Packages: nginx-1.6.2-1.el6.ngx.x86_64.rpm | 336 kB 00:12 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : nginx-1.6.2-1.el6.ngx.x86_64 1/1 ---------------------------------------------------------------------- Thanks for using nginx! Please find the official documentation for nginx here: * http://nginx.org/en/docs/ Commercial subscriptions for nginx are available on: * http://nginx.com/products/ ---------------------------------------------------------------------- Verifying : nginx-1.6.2-1.el6.ngx.x86_64 1/1 Installed: nginx.x86_64 0:1.6.2-1.el6.ngx Complete!
4、此类安装与源码编译安装Nginx是完全不一样的，执行find / -name *nginx* 和 whereis nginx命令，如下:
[root@localhost /]# find / -name *nginx* /usr/sbin/nginx /usr/share/nginx /etc/nginx /etc/nginx/nginx.conf /etc/logrotate.d/nginx /etc/sysconfig/nginx /etc/yum.repos.d/nginx.repo /etc/rc.d/rc4.d/S85nginx /etc/rc.d/rc5.d/S85nginx /etc/rc.d/rc6.d/K15nginx /etc/rc.d/rc0.d/K15nginx /etc/rc.d/rc1.d/K15nginx /etc/rc.d/rc3.d/S85nginx /etc/rc.d/init.d/nginx /etc/rc.d/rc2.d/S85nginx /var/lib/yum/yumdb/n/3c706f3b7aab0c74fa1c2b090a71e8d5b28d4927-nginx-1.6.2-1.el6.ngx-x86_64 /var/lib/yum/repos/x86_64/6/nginx /var/log/nginx /var/cache/yum/x86_64/6/nginx /var/cache/yum/x86_64/6/epel/packages/nginx-filesystem-1.0.15-11.el6.noarch.rpm /var/cache/nginx [root@localhost /]# whereis nginx nginx: /usr/sbin/nginx /etc/nginx /usr/share/nginx
5、执行service nginx start 命令启动Nginx服务，如下：
[root@localhost nginx]# service nginx start Starting nginx: [ OK ]
6、执行service nginx stop 命令停止Nginx服务，如下：
[root@localhost nginx]# service nginx stop Stopping nginx: [ OK ]
异常问题：
Starting nginx: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] still could not bind() [FAILED]
报以上错误说明80端口被占用，更换其他端口即可。
