在安装nginx之前可以先安装libevent，安装libevent步骤如下：
1.下载libevent：
wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
2.解压libevent：
tar -zxvpf libevent-2.0.21-stable.tar.gz
3.进入解压目录：
cd libevent-2.0.21-stable
4.指定安装目录：
./configure --prefix=/usr/local/libevent-2.0.21
5.安装libevent：
make
make install
本blog来源地址：http://blog.csdn.net/mchdba/article/details/50967970，不经过原作者mchdba（黄杉）允许，谢绝转载。
6，安装nginx
yum install -y openssl*
tar -xvf pcre-8.31.tar.gz -C /usr/local/
tar -xvf nginx-1.4.2.tar.gz
cd nginx-1.4.2
./configure --with-http_ssl_module --prefix=/usr/local/nginx --with-pcre=/usr/local/pcre-8.31 --with-http_stub_status_module
pS：首席编译脚本 1.121/122
yum -y install gcc automake autoconf libtool make
./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_realip_module --with-http_gzip_static_module --with-http_ssl_module --with-pcre=/usr/local/pcre-8.31
make
make install
7，查看编译参数：
/usr/local/nginx/sbin/nginx -V
8，使用nginx帐号启动
setcap CAP_NET_BIND_SERVICE=+ep /usr/local/nginx/sbin/nginx
要先用root帐号运行 /usr/local/nginx/sbin/nginx 启动，然后kill掉nginx进程
再切换到nginx帐号执行service nginx restart或者/usr/local/nginx/sbin/nginx 启动，就会看到进程是用nginx帐号在启动了
9，报错调试
[[email protected]_net_1 ~]$ service nginx start
start nginx
nginx: [emerg] bind() to 0.0.0.0:80 failed (13: Permission denied)
nginx is running[[email protected]_net_1 ~]$
[[email protected]_net_1 ~]$ exit
logout
[[email protected]_net_1 conf]#
[[email protected]_net_1 conf]# sudo chown root:wheel /usr/local/nginx/sbin/nginx
[[email protected]_net_1 conf]# sudo chmod u+s /usr/local/nginx/sbin/nginx
[[email protected]_net_1 conf]#
[[email protected]_net_1 conf]# su - nginx
[[[email protected]_net_1 conf]# sudo chmod u+x /usr/local/nginx/sbin/nginx
之后进入nginx帐号启动成功了。