Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

DNS cluster problem

Discussion in 'Bind/DNS/Nameserver' started by bigdessert, Apr 6, 2010.

  1. bigdessert

    bigdessert Active Member

    Jul 21, 2006
    Likes Received:
    Trophy Points:
    I don't know if I am doing something wrong here, but here is my setup:

    vps1-full whm/cpanel hosting all accounts-nameserver1 points here
    vps2-full whm/cpanel used as a failover for a couple accounts-nameserver2 points here

    dns cluster is setup and synchronization is setup for vps1 to vps2 only one way.

    So what I was attempting to do tonight was to simulate a failure of vps1 so I shut vps1 down. From there I went to vps2 and tried to change the dns zone to point to vps2 to get the failover site up and running. Well I waited for 10 minutes and it still was trying to access the vps1 server for my domain.

    However, if I bring back vps1 online and just change the ip in the dns zone to point to vps2 when both are online everything changes correctly in a matter of 2 minutes.

    So something about when bringing vps1 down is still trying to look at that instead of hitting my next nameserver that points to vps2.

    Is it just some really simple setting I am missing here?

    My thought is if this will not work is to get 2 more vps's and setup a dnsonly cluster and make those two the primary nameservers.

    Thanks for the help in advance.
  2. MikeDVB

    MikeDVB Well-Known Member

    Jun 4, 2008
    Likes Received:
    Trophy Points:
    Indiana, USA
    DNS doesn't work like that in my experiences - although when a DNS Query comes in to NS1 and that gets a servfail or no response you would think/hope that it would then try NS2 - this is often not the case.

    Why does it not always work like that? I couldn't tell you - but I do know that is how it has worked in my testing in the past.

    Maybe somebody else will have a better reason/explanation.
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice