centos 安裝nginx

一、準備工做
選首先安裝這幾個軟件：GCC，PCRE（Perl Compatible Regular Expression），zlib，OpenSSL。
Nginx是C寫的，須要用GCC編譯；Nginx的Rewrite和HTTP模塊會用到PCRE；Nginx中的Gzip用到zlib；
用命令「# gcc」，查看gcc是否安裝；若是出現「gcc: no input files」信息，說明已經安裝好了。
不然，就須要用命令「# yum install gcc」，進行安裝了！一路可能須要屢次輸入y，進行確認。
安裝好後，能夠再用命令「#gcc」測試，或者用命令「# gcc -v」查看其版本號。
一樣方法，用以下命令安裝PCRE，zlib，OpenSSL（其中devel，是develop開發包的意思）：

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

二、下載並安裝
建立目錄（nginx）並進去；而後，從官方地址（http://nginx.org/）下載，解壓，配置，編譯，安裝：

# 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  

　默認的安裝路徑爲：/usr/local/nginx；跳轉到其目錄下sbin路徑下，即可以啓動或中止它了。

# ./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  

　　啓動：./nginx
       中止：./nginx -s stop

三、添加到系統服務
使用命令「# vi /etc/init.d/nginx」，打開編輯器，輸入以下內容：

#!/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  

　　保存退出後，再使用下面的命令，使其可執行；而後，添加配置並查看。
可用chkconfig修改其值，也可用ntsysv工具改變是否自啓動。

# 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