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ashk's avatar
ashk
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Dec 06, 2023

DNS load balancing for External Websites

Hello, We currently manage an F5 DNS with a delegation for *.gslb.abc.com. Our external websites, namely ffff.org and gggg.com, are hosted on F5 LTM, and their respective IPs are provided in the Go...
application delivery
PhatANhappy's avatar
PhatANhappy
Icon for MVP rankMVP
Dec 06, 2023

Minor notes:
The GTM/DNS modules is an intellegent dns resolver, it is never in line.   It provides an answer to a dns question.  i.e. - what is the IP address of   server.fff.org

- if your websites are configured using the first level domain     ffff.org   and gggg.com   you will have to delegate the zone to the GTM.   If you are using a 2nd level domain, myserver.ffff.org   and myapp.ggg.org you can easily change the A record for them  to the cname with the delgation.

This is less of a "f5" question and more of a proper DNS architecture problem.   What f5 introduces is the abiliy to monitor and provide HA based upon a tested condtion.

  • ashk's avatar
    ashk
    Icon for Cirrus rankCirrus
    Dec 06, 2023

    Understand, So I do required a deligation? 

    Example: myapps.org is hosted on GoDaddy point to 1.1.1.1

    My 2 virtual myapps servers are 1.1.1.1 and 2.2.2.2. In go daddy I can only provide one IP so There in the CNAME or NS feild under myapps.org I need to configure my GTM Listerner IP or Hostname? 

    its first level domain. Do I need to create a new Zone/Deligation in GTM or in my Internal DNS to listen on Internal dns and send to GTM? but it will change the URL to myapps.gslb.org? 

    so pointing directly to the GTM wont work ? 

     

    appreciate the help 🙂