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Changing Nameserver IP's without Downtime

Discussion in 'Bind / DNS / Nameserver Issues' started by ddeans, Mar 8, 2004.

  1. ddeans

    ddeans Well-Known Member

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    Need some IP advice here.

    I've got a question that I have searched but could not find an exact answer on it.

    This is the issue. I have a box with hosting company A. My download speeds on this box are about 36k/second when no-one else is using it. The only thing the Hosting company can do is move the box to a new rack with new IP's to speed up the download. But this would mean that I would have to wait for the IP's to propagate all over again. 3 days downtime is not an option here.

    Now I also have a box with hosting company B. In a different datacenter. This server is almost full but has enough room to store the users files on my first box, for a few days. Can I copy all the data from box 1 to box 2 and then update the nameservers at the registrar to reflect the new Ip's, and the customers not know that they moved to a different server?

    So basicially, can I just change the NameServer Ip's without the customer having to do anything and the site's then point to box 2, while box 1 is being moved all over the place?

    Thanks!
     
    #1 ddeans, Mar 8, 2004
    Last edited: Mar 8, 2004
  2. ddeans

    ddeans Well-Known Member

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    Any one have an idea?
     
    #2 ddeans, Mar 8, 2004
  3. shaun

    shaun Well-Known Member

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    1. Move the customers from A to B
    2. Change A's zone files to point to B's ip
    3. Setup the nameservers that where on B on A
    4. Wait for propagation.

    You can do the same but the other way around when you get server A back up.

    My advise, move server A to another provider, this provider is clearly screwing there clients.
     
    #3 shaun, Mar 9, 2004
  4. kickback

    kickback Member

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    We had to do this and it works your users wont even know about the change.
     
    #4 kickback, Mar 9, 2004
  5. ddeans

    ddeans Well-Known Member

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    Okay Thanks!
     
    #5 ddeans, Mar 9, 2004
  6. ddeans

    ddeans Well-Known Member

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    How do I do this?

     
    #6 ddeans, Mar 9, 2004
  7. PbG

    PbG Well-Known Member

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    WHM edit DNS Zone. Or edit the zones from the command line in /var/named/

    I would also shorten the TTL on all the zones then wait till the previous TTL expires before implementing the above changes. I also believe any customers that have the IP's defined along with the nameservers at their registrar will need to be notified. If they just have the nameservers listed this will/should work fine.


     
    #7 PbG, Mar 9, 2004
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