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Possible changes when DNS record is changed on a load balancer RRS feed

  • Question

  • Hello

    I'd like to know the possible changes that could occur when I update the dns record for an ADFS Server.

    I have 2 ADFS servers in my environment currently load balanced. But on the DNS server, the fs record points to only one server instead of the load balancer. I'd like to know what will happen if i change this fs record to point to the load balancer's ip.

    what will be the possible changes that would occur.

    Kindly note the following -

    -AD servers, ADFS Servers run as IaaS VMs in Azure connected site to site to on prem Ad servers via ad connect.

    -have Office365 running (SharePoint, Skype4Biz, etc)

    Tuesday, February 21, 2017 3:22 PM

All replies

  • Hi Oladiran,

    Possible impacts from making that change

    1) if users cannot connect to the load balanced IP authentication may fail

    2) If a single node in the load balanced pair is not working authentication may fail

    3) If Office 365 mailbox servers cannot connect to the new IP authentication may fail

    You can test exactly what will happen (for modern auth and browser auth) by creating a hosts file entry on your computer to point the ADFS service to the new IP. Perform some testing.

    Good Luck!

    Shane

    Tuesday, March 21, 2017 12:16 AM