使用nginx配置带有权限验证的反向代理

环境：centos6u3

1、安装nginx

（1）上传nginx

nginx-1.14.0.tar.gz。可以从nginx官网下载http://nginx.org/en/download.html

（2）解压

tar zxvf nginx-1.14.0.tar.gz

（3）安装依赖包：

yum install gcc gcc-c++ glibc automake pcre zlip zlib-devel openssl-devel pcre-devel wget lrzsz

（4）配置账号：

groupadd www

useradd -s /sbin/nologin -g www -M www

（5）编译、安装

cd nginx-1.14.

./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module

make

make install

（6）配置service
vim /etc/init.d/nginx

#!/bin/bash

# nginx Startup script for the Nginx HTTP Server

# it is v.0.0. version.

# chkconfig: -

# description: Nginx is a high-performance web and proxy server.

#              It has a lot of features, but it's not for everyone.

# processname: nginx

# pidfile: /var/run/nginx.pid

# config: /usr/local/nginx/conf/nginx.conf

nginxd=/usr/local/nginx/sbin/nginx

nginx_config=/usr/local/nginx/conf/nginx.conf

nginx_pid=/var/run/nginx.pid

RETVAL=

prog="nginx"

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

. /etc/sysconfig/network

# Check that networking is up.

[ ${NETWORKING} = "no" ] && exit

[ -x $nginxd ] || exit

# Start nginx daemons functions.

start() {

if [ -e $nginx_pid ];then

   echo "nginx already running...."

   exit

fi

   echo -n $"Starting $prog: "

   daemon $nginxd -c ${nginx_config}

   RETVAL=$?

   echo

   [ $RETVAL =  ] && touch /var/lock/subsys/nginx

   return $RETVAL

}

# Stop nginx daemons functions.

stop() {

        echo -n $"Stopping $prog: "

        killproc $nginxd

        RETVAL=$?

        echo

        [ $RETVAL =  ] && rm -f /var/lock/subsys/nginx /var/run/nginx.pid

}

# reload nginx service functions.

reload() {

    echo -n $"Reloading $prog: "

    #kill -HUP `cat ${nginx_pid}`

    killproc $nginxd -HUP

    RETVAL=$?

    echo

}

# See how we were called.

case "$1" in

start)

        start

        ;;

stop)

        stop

        ;;

reload)

        reload

        ;;

restart)

        stop

        start

        ;;

status)

        status $prog

        RETVAL=$?

        ;;

*)

        echo $"Usage: $prog {start|stop|restart|reload|status|help}"

        exit

esac

exit $RETVAL

2、配置反向代理

vim /usr/local/nginx/conf/nginx.conf

#user  nobody;

worker_processes  ;

#error_log  logs/error.log;

#error_log  logs/error.log  notice;

#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {

    worker_connections  ;

}

http {

    include       mime.types;

    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

    #                  '$status $body_bytes_sent "$http_referer" '

    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;

    #tcp_nopush     on;

    #keepalive_timeout  ;

    keepalive_timeout  ;

    #gzip  on;

    server {

        listen       ;

        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {

            root   html;

            index  index.html index.htm;

        }

        location /public/ {

            proxy_pass http://ip:port/;

            proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;

            proxy_max_temp_file_size ;

            proxy_connect_timeout      ;

            proxy_send_timeout         ;

            proxy_read_timeout         ;

            proxy_buffer_size          64m;

            proxy_buffers               64m;

            proxy_busy_buffers_size    64m;

            proxy_temp_file_write_size 64m;

        }

        location /user/checkauth {

            proxy_pass http://ip:port/user/checkbotpageauth;

            proxy_pass_request_body off;

            proxy_set_header Content-Length "";

            proxy_set_header X-Original-URI $request_uri;

        }

        location /url/ {

            proxy_pass http://ip:port/url/;

            proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;

            proxy_max_temp_file_size ;

            proxy_connect_timeout      ;

            proxy_send_timeout         ;

            proxy_read_timeout         ;

            proxy_buffer_size          256m;

            proxy_buffers               256m;

            proxy_busy_buffers_size    256m;

            proxy_temp_file_write_size 256m;

            auth_request /user/checkauth;

        }

        #error_page                /.html;

        # redirect server error pages to the static page /50x.html

        #

        error_page        /50x.html;

        location = /50x.html {

            root   html;

        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:

        #

        #location ~ \.php$ {

        #    proxy_pass   http://127.0.0.1;

        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:

        #

        #location ~ \.php$ {

        #    root           html;

        #    fastcgi_pass   127.0.0.1:;

        #    fastcgi_index  index.php;

        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;

        #    include        fastcgi_params;

        #}

        # deny access to .htaccess files, if Apache's document root

        # concurs with nginx's one

        #

        #location ~ /\.ht {

        #    deny  all;

        #}

    }

    # another virtual host using mix of IP-, name-, and port-based configuration

    #

    #server {

    #    listen       ;

    #    listen       somename:;

    #    server_name  somename  alias  another.alias;

    #    location / {

    #        root   html;

    #        index  index.html index.htm;

    #    }

    #}

    # HTTPS server

    #

    #server {

    #    listen        ssl;

    #    server_name  localhost;

    #    ssl_certificate      cert.pem;

    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;

    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;

    #    ssl_prefer_server_ciphers  on;

    #    location / {

    #        root   html;

    #        index  index.html index.htm;

    #    }

    #}

}

注意，其中ip、port需要替换为具体ip、端口，/public、/url、/user/checkauth等为示例地址，需要根据具体情况修改。/user/checkauth接口，通过session判断是否有权限，没有权限返回http code 403，有权限返回200

3、主页自动跳转

vim /usr/local/nginx/html/index.html

<html>

<head>

<title>欢迎</title>

<meta http-equiv="refresh" content="0;url=/public/">

</head>

<body>

<h1>正在跳转。。。</h1>

</body>

</html>

4、启动nginx

service nginx start