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工作学习 / 学科技术 / 请教同学们一个问题：关于DNS数据更新的The website used to be on a server with the IP address of ip-A. Recently it was migrated to a new server ip-B. DNS settings have been updated.
Now most visitors are directed to ip-B correctly.
However, still a few visitors are accessing ip-A, probably because their DNS servers are not refreshed. The domain name is still pointing to ip-A on those DNS servers.
My questions is, is it possible to "force-update" all DNS servers that contain the domain name of this website?
-sailor(Ocean & Mountain);
2020-10-11
{482}
(#13234159@0)
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很多时候是因为browser DNS Cache, 试试flush
-keysi(K.S);
2020-10-11
(#13234190@0)
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send them 301 and 402
-firetrain(火车头);
2020-10-11
(#13234220@0)
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基本上DNS level的redirect是在FQDN之间进行，楼主的DN并没有变化，只是IP不同吧，你怎么用301, Web server level的redirect倒是有可能。当然我必须承认，networking不是我的领域，我的领域在groupware
-keysi(K.S);
2020-10-11
(#13234264@0)
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能否排除有个别用户不是用域名去访问而是直接用IP访问的呢？如果真有，DNS再怎么刷新也没用吧？除非你能返回一个note告诉用户已经搬家了改道去新址.....
-see1see(Isee);
2020-10-11
(#13234234@0)
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今天发了一个蔡总统双十讲话给国内的兄弟,开始说不能看墙住了,后来用QQ浏览器居然能看
台灣雙十慶典 總統蔡英文願意在「符合對等尊嚴的原則下 和北京促成有意義的對話」
https://www.fairchildtv.com/news.php?n=3d5a8f0ae3cb6978839e4df3cc36ea90
-xiaozuiba(xiaozuiba);
2020-10-11
{247}
(#13234251@0)
+2
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谢谢大家的回帖。用了火车头的方法，在老IP强制发一个 return 301 如果DNS仍然解析rolia.net到老IP，那就死循环到DNS醒悟为止。😂
-sailor(Ocean & Mountain);
2020-10-11
(#13234300@0)
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没有这么做的啊，哥
-keysi(K.S);
2020-10-11
(#13234303@0)
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老IP你还有所有权，就直接redirect到新IP就是了呀，反正等那些Cache过期然后更新了就好了，时间而已。
-guestagain(guest again);
2020-10-11
(#13234319@0)
+1
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善良老实
-firetrain(火车头);
2020-10-11
{4}
(#13234322@0)
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呃，主要是懒……
-guestagain(guest again);
2020-10-11
(#13234377@0)
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If I do redirect, it should be always by domain name, not IP address. It's wired for the visitors to see IP address in the browser address bar.
-sailor(Ocean & Mountain);
2020-10-11
(#13234387@0)
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哦，那你就在老IP那里做个proxy server好了。或者就redirect到一个新sub domain？
-guestagain(guest again);
2020-10-11
(#13234391@0)