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Setting up Redundancy on a, A Record

  • 13-07-2008 1:21pm
    #1
    tom-thebox
    Closed Accounts Posts: 1,414 ✭✭✭


    Hi folks

    Some clever clogs out there might have a solution to my problem

    I have a primary server which is replicating to a secondary server.

    However I need advice on how to get the hostname of the primary to resolve to the secondary server if the primary goes down


    example

    servername.domain.com

    primary server ip 22.22.22.22

    secondary server ip 33.33.33.33

    Any advice?

    Thanks

    Tom


Comments

  • #2
    minttea
    Subscribers Posts: 78 ✭✭minttea


    You could use DNS failover, when the first IP is not responding it will automatically flip to the second IP address.

    The failover time depends on the TTL of your domain, if the TTL is set low the failover can happen within just a few minutes.

    DNS Made Easy provide this service for about $60/year.


    http://www.dnsmadeeasy.com/s0306/prod/dnsfosm.html

    Hope this helps!


  • #3
    tom-thebox
    Closed Accounts Posts: 1,414 ✭✭✭tom-thebox


    Super, greatly appreciated!


  • #4
    bushy...
    Closed Accounts Posts: 1,467 ✭✭✭bushy...


    Could you use heartbeat /cluster / carp etc ? then the secondary would just take over the ip of the primary.


  • #5
    steve-hosting36
    Closed Accounts Posts: 2,161 ✭✭✭steve-hosting36


    Which will work assuming the two machines are in the same Van / IP range / location...

    Alternatively, point traffic at a loadbalancer device (or HA pair of such devices) and have it divert the traffic if it sees a failure in the primary.

    That said, simple DNS failover will probably do the job..


  • #6
    tech
    Registered Users, Registered Users 2 Posts: 2,860 ✭✭✭tech


    hi Tom

    What applications is the server hosting?

    file
    print
    Exchange
    SQL
    Blackberry?

    there is some nice software out there called Xosoft


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