The Community Forums

Interact with an entire community of cPanel & WHM users!
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

cPanel Migration with minimal downtime

Discussion in 'General Discussion' started by binarycubes, Jun 1, 2009.

  1. binarycubes

    binarycubes Registered

    Joined:
    Jun 1, 2009
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    1
    I am trying to migrate from one cpanel server to another without having the clients change their nameservers at their registrar. I do have full control of both the old and new server. Is there some way I can achieve that with minimal downtime?
     
  2. jasonhk

    jasonhk Well-Known Member

    Joined:
    Nov 11, 2005
    Messages:
    48
    Likes Received:
    0
    Trophy Points:
    6
    Lower the TTL's and use cPanels express transfer option. Assuming both servers will be online at the time of the move, there actually won't be any "downtime" you might have some users pointing at the old server and some at the new, so the issue here is just mail and database syncing.
     
  3. cPanelDavidG

    cPanelDavidG Technical Product Specialist

    Joined:
    Nov 29, 2006
    Messages:
    11,279
    Likes Received:
    8
    Trophy Points:
    38
    Location:
    Houston, TX
    cPanel Access Level:
    Root Administrator
    If both servers are running the latest 11.24, there shouldn't be any noticeable downtime as the express transfer option points the DNS from the old server to the new server to minimize downtime incurred by DNS propagation.
     
  4. PlatinumServerM

    PlatinumServerM Well-Known Member
    PartnerNOC

    Joined:
    Jul 10, 2005
    Messages:
    397
    Likes Received:
    1
    Trophy Points:
    18
    Location:
    New Jersey, USA
    cPanel Access Level:
    Root Administrator
    As long as the old server stays up until the migration/propagation is done, there should not be any downtime at all. The sites should seemlessly propagate to the new server with no interruption.
     
  5. electric

    electric Well-Known Member

    Joined:
    Nov 5, 2001
    Messages:
    697
    Likes Received:
    1
    Trophy Points:
    18
    Don't forget that your customer's will need to re-register their private nameservers (if they have any) to use the IPs from the new server...
     
  6. Spiral

    Spiral BANNED

    Joined:
    Jun 24, 2005
    Messages:
    2,023
    Likes Received:
    7
    Trophy Points:
    0
    Though the actual transfer is pretty much instantaneous, some users
    may still try to access the old server because of DNS route caching
    either in their own local computers or more commonly from their ISPs
    but those issues should resolve themselves in a few days.

    Regarding nameservers, I would recommend your making it mandatory
    for your clients to host their DNS through your servers.

    We made that change a number of years ago for the exact reason
    as what you are now trying to do as it often becomes a major nightmare
    headache when you got to migrate a server (or a large group of servers
    as is the case usually) to a new IP address pool, trying to get everyone
    to update their DNS settings properly, and most not knowing what they
    are doing adding to the problems. Then you have to deal with all the
    support tickets and the "my site is down" complaints and it becomes
    a major headache that is easily minimized and avoidable if you just
    controlled the DNS servers that your client's use for their domains.

    With your clients using your DNS servers, you would only need to duplicate
    the DNS between the old and new servers and simply update the
    IP addresses for the authoritative DNS servers on your own domain
    and all your clients would simultaneously get those updates for all
    their domains at all their registrars without having to touch
    anything at all. This only leaves just resellers to deal with alone.

    Anyway, don't know your exact configuration ... just a thought.
     
Loading...

Share This Page