CentOS6.4下，Nginx安装与配置

1、准备工作
选首先安装这几个软件：GCC，PCRE（Perl Compatible Regular Expression），zlib，OpenSSL。
Nginx是C写的，需要用GCC编译；Nginx的Rewrite和HTTP模块会用到PCRE；Nginx中的Gzip用到zlib；
用命令“# gcc”，查看gcc是否安装；如果出现“gcc: no input files”信息，说明已经安装好了。
否则，就需要用命令“# yum install gcc”，进行安装了！一路可能需要多次输入y，进行确认。
安装好后，可以再用命令“#gcc”测试，或者用命令“# gcc -v”查看其版本号。
同样方法，用如下命令安装PCRE，zlib，OpenSSL（其中devel，是develop开发包的意思）：

 # yum install -y pcre pcre-devel
 # yum install -y zlib zlib-devel
 # yum install -y openssl openssl-devel

2、下载并安装
创建目录（nginx）并进去；然后，从官方地址（http://nginx.org/）下载，解压，配置，编译，安装：

 # mkdir nginx && cd nginx
 # wget http://nginx.org/download/nginx-1.7.3.tar.gz
 # tar xzf nginx-1.7.3.tar.gz
 # cd nginx-1.7.3
 # ./configure
 # make
 # make install
 # whereis nginx
 nginx: /usr/local/nginx

默认的安装路径为：/usr/local/nginx；跳转到其目录下sbin路径下，便可以启动或停止它了。

 # ./nginx -h
 nginx version: nginx/1.7.3
 Usage: nginx [-?hvVtq] [-s signal] [-c filename] [-p prefix] [-g directives]
 Options:
   -?,-h         : this help
   -v            : show version and exit
   -V            : show version and configure options then exit
   -t            : test configuration and exit
   -q            : suppress non-error messages during configuration testing
   -s signal     : send signal to a master process: stop, quit, reopen, reload
   -p prefix     : set prefix path (default: /usr/local/nginx/)
   -c filename   : set configuration file (default: conf/nginx.conf)
   -g directives : set global directives out of configuration file

启动：./nginx
停止：./nginx -s stop

3、添加到系统服务
使用命令“# vi /etc/init.d/nginx”，打开编辑器，输入如下内容：

 #!/bin/sh
 # chkconfig: 2345 85 15
 # Startup script for the nginx Web Server
 # description: nginx is a World Wide Web server.
 # It is used to serve HTML files and CGI.
 # processname: nginx
 # pidfile: /usr/local/nginx/logs/nginx.pid
 # config: /usr/local/nginx/conf/nginx.conf

 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
 DESC="nginx deamon"
 NAME=nginx
 DAEMON=/usr/local/nginx/sbin/$NAME
 SCRIPTNAME=/etc/init.d/$NAME

 test -x $DAEMON || exit 0

 d_start(){
   $DAEMON || echo -n "already running"
 }

 d_stop(){
   $DAEMON -s quit || echo -n "not running"
 }


 d_reload(){
   $DAEMON -s reload || echo -n "can not reload"
 }

 case "$1" in
 start)
   echo -n "Starting $DESC: $NAME"
   d_start
   echo "."
 ;;
 stop)
   echo -n "Stopping $DESC: $NAME"
   d_stop
   echo "."
 ;;
 reload)
   echo -n "Reloading $DESC conf..."
   d_reload
   echo "reload ."
 ;;
 restart)
   echo -n "Restarting $DESC: $NAME"
   d_stop
   sleep 2
   d_start
   echo "."
 ;;
 *)
   echo "Usage: $ScRIPTNAME {start|stop|reload|restart}" >&2
   exit 3
 ;;
 esac

 exit 0

保存退出后，再使用下面的命令，使其可执行；然后，添加配置并查看。
可用chkconfig修改其值，也可用ntsysv工具改变是否自启动。

 # chmod +x /etc/init.d/nginx
 # chkconfig --add nginx
 # chkconfig nginx on/off
 # chkconfig --list nginx
 nginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off