Comments on: Moving your website to another server? Tune your DNS for minimum downtime. http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/ The Journal Of A Linux Sysadmin Thu, 09 Feb 2012 03:50:59 +0000 hourly 1 http://wordpress.org/?v=3.3 By: seanp2khttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-193674 seanp2k Tue, 22 Nov 2011 17:56:52 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-193674 >"This means that any remote server will not cache the records for more than 1 minute" You're dreaming with this value.Just a heads up to anyone reading this: if you set the TTL on any of your records to anything under an hour, don't expect other DNS servers to honor your TTL setting. Polling a nameserver for changes every 60 seconds is ridiculous. The absolute minimum I'd suggest on an internet-facing nameserver would be 600 seconds -- and even then, good luck getting any other nameserver to actually honor that.It's common practice to ignore TTLs lower than 1 hour (3600 seconds) -- so I'd recommend using that.REF: http://www.ripe.net/ripe/docs/ripe-203 >”This means that any remote server will not cache the records for more than 1 minute”
You’re dreaming with this value.

Just a heads up to anyone reading this: if you set the TTL on any of your records to anything under an hour, don’t expect other DNS servers to honor your TTL setting. Polling a nameserver for changes every 60 seconds is ridiculous. The absolute minimum I’d suggest on an internet-facing nameserver would be 600 seconds — and even then, good luck getting any other nameserver to actually honor that.

It’s common practice to ignore TTLs lower than 1 hour (3600 seconds) — so I’d recommend using that.

REF: http://www.ripe.net/ripe/docs/ripe-203

]]> By: markwilson.it » Configuring DNS for Exchange Online in Office 365http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-192893 markwilson.it » Configuring DNS for Exchange Online in Office 365 Fri, 13 May 2011 15:46:30 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-192893 [...] Before making DNS changes, it’s worthwhile tuning DNS settings to reduce the time to live (TTL... to speed up the DNS propagation process by reducing the time that records are stored in others’ DNS caches. [...] [...] Before making DNS changes, it’s worthwhile tuning DNS settings to reduce the time to live (TTL… to speed up the DNS propagation process by reducing the time that records are stored in others’ DNS caches. [...]

]]> By: Dewitt Mccalanahanhttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-192505 Dewitt Mccalanahan Wed, 16 Mar 2011 15:32:37 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-192505 I am really impressed with your writing skills as well as with the layout on your weblog. Is this a paid theme or did you modify it yourself? Anyway keep up the excellent quality writing, it’s rare to see a nice blog like this one nowadays.. I am really impressed with your writing skills as well as with the layout on your weblog. Is this a paid theme or did you modify it yourself? Anyway keep up the excellent quality writing, it’s rare to see a nice blog like this one nowadays..

]]> By: Johna Innocenthttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-192429 Johna Innocent Mon, 07 Mar 2011 13:13:24 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-192429 It is generally remarkable to see the place technology goes and the foreseeable future of gaming is no diverse. There are a lot of cool and extremely revolutionary technologies arising. There is no way to tell which 1 will make the following large wave, but a person issue is for guaranteed, it will have a thing to do with finding rid of the remote as we know it! It is generally remarkable to see the place technology goes and the foreseeable future of gaming is no diverse. There are a lot of cool and extremely revolutionary technologies arising. There is no way to tell which 1 will make the following large wave, but a person issue is for guaranteed, it will have a thing to do with finding rid of the remote as we know it!

]]> By: Strategy for migrating web applications between hosting providers « Rohland de Charmoyhttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-183539 Strategy for migrating web applications between hosting providers « Rohland de Charmoy Sat, 20 Nov 2010 14:00:05 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-183539 [...] of time your DNS update is going to take to propagate to your clients due to DNS record caching. Reducing the TTL is not a full-proof solution since many ISPs won’t obey unusually low TTL settings that you [...] [...] of time your DNS update is going to take to propagate to your clients due to DNS record caching. Reducing the TTL is not a full-proof solution since many ISPs won’t obey unusually low TTL settings that you [...]

]]> By: DNS refresh problem with Vodafonehttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-182198 DNS refresh problem with Vodafone Tue, 10 Aug 2010 15:34:30 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-182198 [...] the TTL. It can be problematic but it means that other DNSes may follow the changes more rapidly. Moving your website to another server? Tune your DNS for minimum downtime. | MDLog:/sysadmin Regards...jmcc http://www.hosterstats.com Hoster Stats for over 3M hosters. Domain history for [...] [...] the TTL. It can be problematic but it means that other DNSes may follow the changes more rapidly. Moving your website to another server? Tune your DNS for minimum downtime. | MDLog:/sysadmin Regards…jmcc http://www.hosterstats.com Hoster Stats for over 3M hosters. Domain history for [...]

]]> By: Chrystian - SP - Brasilhttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-182063 Chrystian - SP - Brasil Fri, 09 Jul 2010 04:03:09 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-182063 Pessoal, esta dica foi muito util para que as publicacoes de DNS que fazemos sejam executadas em menos tempo. É importante lembrar que o TTL deve retornar ao valor original depois da propagação para evitar problemas com tráfego demais por tempo de expiração baixo.. Obrigado ;) Pessoal, esta dica foi muito util para que as publicacoes de DNS que fazemos sejam executadas em menos tempo. É importante lembrar que o TTL deve retornar ao valor original depois da propagação para evitar problemas com tráfego demais por tempo de expiração baixo.. Obrigado ;)

]]> By: flamehttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-181704 flame Mon, 29 Mar 2010 20:13:12 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-181704 @ yanni the necro poster: Public IP, retard. How else would the world find it? Windoze sucks, use *nix. Also, simpsons did it (with OS/2) @ yanni the necro poster: Public IP, retard. How else would the world find it? Windoze sucks, use *nix. Also, simpsons did it (with OS/2)

]]> By: yannihttp://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-181546 yanni Thu, 28 Jan 2010 08:20:07 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-181546 hello , plz help hv a question ... on my domain i want to assign nameservers ... so i made with 2003 a nameserver named ns1.circuitcity.gr but dont know what IP do i use ..nameserver IP = ???? pc static local ip ? pc primary dns ip ? or what ip ? THANK YOU hello , plz help hv a question … on my domain i want to assign nameservers … so i made with 2003 a nameserver named ns1.circuitcity.gr but dont know what IP do i use ..

nameserver IP = ???? pc static local ip ? pc primary dns ip ? or what ip ? THANK YOU

]]> By: - Marius -http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/comment-page-1/#comment-178880 - Marius - Sun, 16 Nov 2008 21:24:52 +0000 http://www.ducea.com/2006/05/21/moving-your-website-to-another-server-tune-your-dns-for-minimum-downtime/#comment-178880 @Sunil: that's true, there are things we can't control. In such cases, depending on the complexity and the need to redirect those users to the new site, you could run some sort of proxy (nginx, or even apache/mod_proxy) and send them to the real content.ps. from my experience those that still come to the old ip after a few days are just junk... normally spam bots that cache the ips to be fast and skip dns requests for ex.hth, - Marius - @Sunil: that’s true, there are things we can’t control. In such cases, depending on the complexity and the need to redirect those users to the new site, you could run some sort of proxy (nginx, or even apache/mod_proxy) and send them to the real content.

ps. from my experience those that still come to the old ip after a few days are just junk… normally spam bots that cache the ips to be fast and skip dns requests for ex.

hth,
- Marius -

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