Howto clear/Flush DNS Cache in Ubuntu

最新推荐文章于 2024-12-07 13:27:48 发布

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最新推荐文章于 2024-12-07 13:27:48 发布

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原文链接：https://my.oschina.net/uniquejava/blog/331734

本文介绍了如何通过三种方法清除Ubuntu 12.04及更早版本中的DNS缓存，包括使用nscd守护进程、重启网络服务以及使用dns-clean工具。清除DNS缓存有助于解决连接超时错误、去除错误的IP地址等问题。

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In this tip we will see some methods for flushing DNS cache under a system running Ubuntu 12.04 or older. But before showing you these commands, let's see some of the advantages of flushing DNS cache:

Resolve "connection timed out" errors when accessing certain websites
Avoid using online proxies to open certain websites
Prevent unauthorized users from seeing websites you visited through your DNS cache
Get rid of wrong IP addresses in your cache, etc.

To be able to flush (clear) DNS cache under Ubuntu 12.04, try one or more of these methods:

Method 1

Install first the nscd daemon with this command from the terminal:

sudo apt-get install nscd

Then clear your DNS data with this command:

sudo /etc/init.d/nscd restart

Method 2

You can also try to flush DNS cache with this command:

sudo /etc/init.d/networking restart

Method 3

Try also this command:

sudo /etc/init.d/dns-clean start

Good luck!

转载于:https://my.oschina.net/uniquejava/blog/331734