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【PHP】生成nginx配置文件，反向代理google

作者:军平 / 发布于2015/10/14/ 716

生成nginx配置文件，反向代理google google的ip地址经常改变，所以要用nslookup去更新ip


	#!/usr/local/php/bin/php
	<?php

	define("CONF_PATH", '/usr/local/nginx/conf/hosts');

	$google_ips = __DIR__ ."/google_ips.txt"; // 保存IP地址文件
	$ngx_cnf = CONF_PATH ."/51open.conf"; // NGINX配置文件

	exec("nslookup google.com", $out, $ret);

	$start = false;
	$ips = [];

	foreach($out as $line) {
	// answer: 之后的是服务器对应IP
	if (false !== strpos($line,"answer:")) {
	$start = true;
	} else if (!$start) {
	continue;
	}

	preg_match("/Address: ((?:(?:25[0-5]|2[0-4]d|((1d{2})|([1-9]?d))).){3}(?:25[0-5]|2[0-4]d|((1d{2})|([1-9]?d))))/i", $line, $matches);
	if (!empty($matches) && isset($matches[1])) {
	$ips[] = $matches[1];
	}
	}

	// 保存的IP地址
	if (file_exists($google_ips)) {
	$data = file_get_contents($google_ips);
	if ($data) {
	$arr = unserialize($data);
	if (isset($arr['ips']) && date('Ymd', $arr['__logtime'])==date('Ymd')) {
	$ips = array_merge($ips, $arr['ips']);
	$ips = array_unique($ips);
	}
	}
	}

	$data = ['__logtime' => time(), 'ips' => $ips];
	file_put_contents($google_ips, serialize($data));

	$str = '';
	foreach ($ips as $ip) {
	$str .= sprintf("n server %s:80 max_fails=3;", $ip);
	}

	if (!$str) {
	exit;
	}

	$ngx_tpl = <<<EOT
	proxy_cache_path /data/cache/nginx/one levels=1:2 keys_zone=one:10m max_size=10g;
	proxy_cache_key"$host$request_uri";

	upstream google {%s
	}

	server {
	listen 80;
	server_name g.51open.net google.51open.net;

	rewrite ^(.*)$ https://$host$1 permanent;
	}

	server {
	listen 443;
	server_name g.51open.net google.51open.net;

	ssl on;
	ssl_certificate /usr/local/nginx/conf/hosts/ssl/g.51open.net.crt;
	ssl_certificate_key /usr/local/nginx/conf/hosts/ssl/g.51open.net.key;

	location / {
	proxy_cache one;
	proxy_cache_valid 200 302 1h;
	proxy_cache_valid 404 1m;
	proxy_redirect https://www.google.com/ /;
	proxy_cookie_domain google.com 51open.net;
	proxy_pass http://google;
	proxy_set_header Host"www.google.com";
	proxy_set_header Accept-Encoding"";
	proxy_set_header User-Agent $http_user_agent;
	proxy_set_header Accept-Language"zh-CN";
	proxy_set_header Cookie"PREF=ID=047808f19f6de346:U=0f62f33dd8549d11:FF=2:LD=zh-CN:NW=1:TM=1325338577:LM=1332142444:GM=1:SG=2:S=rE0SyJh2w1IQ-Maw";
	#sub_filter www.google.com g.51open.net;
	#sub_filter_once off;
	}
	}
	EOT;

	$content = sprintf($ngx_tpl, $str);

	file_put_contents($ngx_cnf, $content);

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　nginx　　反向代理google　

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