一、nginx介绍及安装

一、nginx简介：

Nginx是一个自由、开源、高性能及轻量级的http服务器及反向代理服务器。Nginx以其高性能、稳定、功能丰富、配置简单及占用系统资源少而著称。Nginx 超越 Apache 的高性能和稳定性，使得国内使用 Nginx 作为 Web 服务器的网站也越来越多。

注：nginx和apache各有优缺点，总体而言，静态和反向代理，优先选用nginx。

二、安装nginx：

1.系统平台centos 6.5：

2.安装依赖包，否则无法编译安装：

yum groupinstall -y "Development tools" "Server Platform Development" "Desktop Platform Development"
yum install -y pcre-devel

1)创建用户nginx和组nginx，实现以用户nginx运行nginx进行：

[[email protected] ~]# groupadd -r nginx    #nginx需要调用1000以下的端口，需要系统用户
[[email protected] ~]# useradd -r -g nginx nginx
[[email protected] ~]# id nginx
uid=496(nginx) gid=493(nginx) groups=493(nginx)

2）解压nginx安装包，安装文件可以在www.nginx.org 下载安装文件:

[[email protected] ~]# ls
anaconda-ks.cfg  install.log         nginx-1.9.3.tar.gz  temp.text  while.py
harlequin.vim    install.log.syslog  README.md           tet
[[email protected] ~]# tar xf nginx-1.9.3.tar.gz
[[email protected] ~]# ls
anaconda-ks.cfg  install.log         nginx-1.9.3         README.md  tet
harlequin.vim    install.log.syslog  nginx-1.9.3.tar.gz  temp.text  while.py
[[email protected] ~]# cd nginx-1.9.3
[[email protected] nginx-1.9.3]# mkdir -pv /var/tmp/nginx/client
mkdir: created directory `/var/tmp/nginx‘
mkdir: created directory `/var/tmp/nginx/client‘
[[email protected] nginx-1.9.3]# ./configure >   --prefix=/usr/local/nginx \
>   --sbin-path=/usr/local/nginx/sbin/nginx >   --conf-path=/etc/nginx/nginx.conf >   --error-log-path=/var/log/nginx/error.log >   --http-log-path=/var/log/nginx/access.log >   --pid-path=/var/run/nginx/nginx.pid  >   --lock-path=/var/lock/nginx.lock >   --user=nginx >   --group=nginx >   --with-http_ssl_module >   --with-http_flv_module >   --with-http_stub_status_module >   --with-http_gzip_static_module >   --http-client-body-temp-path=/var/tmp/nginx/client/ >   --http-proxy-temp-path=/var/tmp/nginx/proxy/ >   --http-fastcgi-temp-path=/var/tmp/nginx/fcgi/ >   --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi >   --http-scgi-temp-path=/var/tmp/nginx/scgi >   --with-pcre

运行make && make install

3)创建服务脚本：

vim /etc/rc.d/init.d/nginx，写入如下脚本：（对脚本做一下说明，有些路径是根据上面configer的选项书写的）

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemin
#
# chkconfig: - 85 15
# description: Nginx is an HTTP(S) server, HTTP(S) reverse # proxy and IMAP/POP3 proxy server
# processname: nginx
# config: /etc/nginx/nginx.conf
# pidfile: /var/run/nginx/nginx.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/local/nginx/sbin/nginx"
prog=$(basename $nginx)

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

lockfile=/var/lock/subsys/nginx

start() {
[ -x $nginx ] || exit 5
[ -f $NGINX_CONF_FILE ] || exit 6
echo -n $"Starting $prog: "
daemon $nginx -c $NGINX_CONF_FILE
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}

stop() {
echo -n $"Stopping $prog: "
killproc $prog -QUIT
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}

restart() {
configtest || return $?
stop
start
}

reload() {
configtest || return $?
echo -n $"Reloading $prog: "
killproc $nginx -HUP
RETVAL=$?
echo
}

force_reload() {
restart
}

configtest() {
$nginx -t -c $NGINX_CONF_FILE
}

rh_status() {
status $prog
}

rh_status_q() {
rh_status >/dev/null 2>&1
}

case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart|configtest)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
exit 2
esac

给脚本添加权限：
chmod +x /etc/rc.d/init.d/nginx
添加开机启动：
chkconfig –add nginx
chkconfig nginx on

4）添加环境变量：
# echo "PATH=$PATH:/usr/local/nginx/sbin" >> /etc/profile （永久生效）

#export PATH=$PATH:/usr/local/nginx/sbin （当前生效）

5)测试并启动：

启动之前先，通过nginx -t测试

[[email protected] nginx-1.9.3]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[[email protected] nginx-1.9.3]# service nginx start
Starting nginx:                                            [  OK  ]

3.网站访问nginx，查看服务器ip地址，浏览器直接输入对应ip地址，nginx默认端口80.

注：输入ip，没有显示，请查看是否iptables开启。

关闭iptables：service iptables stop