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Redirect a Website URL from One Server to Different Server in Apache
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============================================================
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As promised in our previous two articles ([Perform Internal Redirection with mod_rewrite][1] and [Show Custom Content Based on Browser][2]), in this post we will explain how to perform a redirection to a resource that has been moved from one server to a different server in Apache using mod_rewrite module.
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Suppose you are redesigning your company’s Intranet site. You have decided to store the content and styling (HTML files, JavaScript, and CSS) on one server and the documentation on another – perhaps a more robust one.
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**Suggested Read:** [5 Tips to Boost the Performance of Your Apache Web Server][3]
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However, you want this change to be transparent to your users so that they are still able to access the docs at the usual URL.
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In the following example, a file named `assets.pdf` has been moved from /var/www/html in 192.168.0.100(hostname: web) to the same location in 192.168.0.101 (hostname: web2).
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In order for users to access this file when they browse to `192.168.0.100/assets.pdf`, open Apache’s configuration file on 192.168.0.100 and add the following rewrite rule (or you can also add the following rule to your [.htaccess file][4]):
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```
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RewriteRule "^(/assets\.pdf$)" "http://192.168.0.101$1" [R,L]
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```
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where `$1` is a placeholder for anything that matches the regular expression inside parentheses.
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Now save changes, don’t forget to restart Apache, and let’s see what happens when we attempt to access assets.pdf by browsing to 192.168.0.100/assets.pdf:
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**Suggested Read:** [25 Useful ‘.htaccess’ Tricks for Websites][5]
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In the above below we can see that the request that was made for assets.pdf on 192.168.0.100 was actually handled by 192.168.0.101.
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```
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# tail -n 1 /var/log/apache2/access.log
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```
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[
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][6]
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Check Apache Logs
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In this article we have discussed how to perform a redirection to a resource that has been moved to a different server. To wrap up, I’d strongly suggest you take a look at the [mod_rewrite][7] guide and [Apache redirect guide][8] for future reference.
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As always, feel free to use the comment form below if you have any concerns about this article. We look forward to hearing from you!
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--------------------------------------------------------------------------------
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作者简介：Gabriel Cánepa is a GNU/Linux sysadmin and web developer from Villa Mercedes, San Luis, Argentina. He works for a worldwide leading consumer product company and takes great pleasure in using FOSS tools to increase productivity in all areas of his daily work.
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-----------
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via: http://www.tecmint.com/redirect-website-url-from-one-server-to-different-server/
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作者：[Gabriel Cánepa][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.tecmint.com/author/gacanepa/
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[1]:http://www.tecmint.com/redirection-with-mod_rewrite-in-apache/
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[2]:http://www.tecmint.com/mod_rewrite-redirect-requests-based-on-browser/
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[3]:http://www.tecmint.com/apache-performance-tuning/
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[4]:http://www.tecmint.com/tag/htaccess/
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[5]:http://www.tecmint.com/apache-htaccess-tricks/
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[6]:http://www.tecmint.com/wp-content/uploads/2016/11/Check-Apache-Logs.png
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[7]:http://mod-rewrite-cheatsheet.com/
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[8]:https://httpd.apache.org/docs/2.4/rewrite/remapping.html
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@ -0,0 +1,63 @@
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在Apache中重定向URL从一台服务器到另外一台服务器上
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============================================================
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如我们前面两篇文章（[使用mod_rewrite执行内部重定向][1]和[基于浏览器显示自定义内容][2]）中所承诺的，在本文中，我们将解释如何在Apache中使用mod_rewrite模块将已移动的资源重定向到不同服务器上。
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假设你正在重新设计公司的网站。你已决定将内容和样式（HTML文件，JavaScript和CSS）存储在一个服务器上，将文档存储在另一个服务器上 - 这样可能会更稳健。
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**建议阅读：** [5个提高Apache Web服务器性能的提示][3]
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但是，你希望这个更改对用户透明，以便他们仍然能够通过常用网址访问文档。
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在下面的例子中，名为“assets.pdf”的文件已从192.168.0.100（主机名：web）中的/var/www /html移动到192.168.0.101（主机名：web2）中的相同位置。
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为了让用户在浏览到“192.168.0.100/assets.pdf”时访问此文件，请打开192.168.0.100上的Apache配置文件并添加以下重写规则（或者也可以将以下规则添加到[.htaccess文件][4]）中：
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```
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RewriteRule "^(/assets\.pdf$)" "http://192.168.0.101$1" [R,L]
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```
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其中`$1`是与括号中的正则表达式匹配的任何内容的占位符。
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现在保存更改，不要忘记重新启动Apache，让我们看看当我们打开192.168.0.100/assets.pdf，尝试访问assets.pdf时会发生什么：
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**建议阅读：** [25有用的网站的'.htaccess'技巧] [5]
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在下面我们就可以看到，为192.168.0.100上的assets.pdf所做的请求实际上是由192.168.0.101处理的。
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```
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# tail -n 1 /var/log/apache2/access.log
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```
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[
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][6]
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检查Apache日志
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在本文中，我们讨论了如何对已移动到其他服务器的资源进行重定向。 总而言之，我强烈建议你看看[mod_rewrite][7]指南和[Apache重定向指南][8]，以供将来参考。
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一如既往那样，如果您对本文有任何疑虑，请随时使用下面的评论栏回复。 我们期待你的回音！
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--------------------------------------------------------------------------------
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作者简介：Gabriel Cánepa是来自阿根廷圣路易斯Villa Mercedes的GNU/Linux系统管理员和Web开发人员。 他在一家全球领先的消费品公司工作，非常高兴使用FOSS工具来提高他日常工作领域的生产力。
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-----------
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via: http://www.tecmint.com/redirect-website-url-from-one-server-to-different-server/
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作者：[Gabriel Cánepa][a]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.tecmint.com/author/gacanepa/
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[1]:http://www.tecmint.com/redirection-with-mod_rewrite-in-apache/
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[2]:http://www.tecmint.com/mod_rewrite-redirect-requests-based-on-browser/
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[3]:http://www.tecmint.com/apache-performance-tuning/
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[4]:http://www.tecmint.com/tag/htaccess/
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[5]:http://www.tecmint.com/apache-htaccess-tricks/
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[6]:http://www.tecmint.com/wp-content/uploads/2016/11/Check-Apache-Logs.png
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[7]:http://mod-rewrite-cheatsheet.com/
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[8]:https://httpd.apache.org/docs/2.4/rewrite/remapping.html
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