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ashk's avatar
ashk
Icon for Cirrus rankCirrus
Dec 21, 2023

F5 DNS for External websites

Greetings everyone,

I require assistance with F5 DNS resolution for external websites. I have a website hosted on GoDaddy, for example, mapmap.org. Currently, it points to a single A record, and I aim to implement load balancing between the IPs. To achieve this, I configured a wideip named mapmap.xxx.org and created aliases for mapmap.org and www.mapmap.org. also, pointed Godaddy DNS to my F5 DNS listener IP /NS by removing A record in Godaddy dns. 

Subsequently, Zonerunner was set up with SOA and NS, using the F5 Listener IP. Upon performing an nslookup, I successfully obtained the answers. However, I noticed a .org. zone created as self, with these alias records falling under that zone.

Is it acceptable to have a zone with .org and include these alias records, or is there an alternative approach for this configuration? I appreciate any assistance provided.

application delivery
cloud
F5 GTM DNS
security
  • zamroni777's avatar
    zamroni777
    Icon for Nacreous rankNacreous
    Dec 21, 2023

    it's better if you share the dns records in godady and f5 config.

    usually, f5 dns implementaiton using dns record is like this:

     

     

    Origin::
a. In godaddy:
host1.mycompany.com	IN A 1.2.3.4
host2.mycompany.com	IN A 11.12.13.14
host3.mycompany.com	IN A 21.22.23.24


New using F5 DNS::
a. In godaddy: declare new subdomain to be NS-ed by F5 DNS and create alias record for previous A records
f5dc1.mycompany.com IN A 5.6.7.8		 /// Datacenter1 F5 DNS listener address
f5dc2.mycompany.com IN A 15.16.17.18		 /// Datacenter2 F5 DNS address
f5dns.mycompany.com	IN NS f5dc1.mycompany.com
f5dns.mycompany.com	IN NS f5dc2.mycompany.com
host1.mycompany.com	IN CNAME host1.f5dns.mycompany.com
host2.mycompany.com	IN CNAME host2.f5dns.mycompany.com
host3.mycompany.com	IN CNAME host3.f5dns.mycompany.com

b. In F5 DNS:
create wideip configs for host1.f5dns.mycompany.com, host2.f5dns.mycompany.com, host3.f5dns.mycompany.com which basically serves:
host1.f5dns.mycompany.com	IN A ....	//IP address is decided dynamically by F5 DNS
host2.f5dns.mycompany.com	IN A ....	//IP address is decided dynamically by F5 DNS
host3.f5dns.mycompany.com	IN A ....	//IP address is decided dynamically by F5 DNS

     

     

     

     

     

    • ashk's avatar
      ashk
      Icon for Cirrus rankCirrus
      Dec 21, 2023

      I agree with the config you said, but it is good for *.mycompany.com. its a subdomain and TLD. I have only top level domain .org like example www.mapmap.org where there is no company name or subdomain. Wanted to see how to achive in this scenario. 

      • zamroni777's avatar
        zamroni777
        Icon for Nacreous rankNacreous
        Dec 21, 2023

        so basically originaly you have these records in godaddy:
        mapmap.org IN NS ...godady name servers...
        mapmap.org IN A ....you webserver public ip adress...

        So in godaddy, you still need to delete "mapmap.org IN A ..." and create subdomain and alias such as:
        f5dns.mapmap.org IN NS ... f5dc1 and f5dc2...
        mapmap.org IN CNAME host1.f5dns.mapmap.org

  • ashk's avatar
    ashk
    Icon for Cirrus rankCirrus
    Feb 07, 2024

    Today, I tried this and getting empty response for mapmap.org and its working for anything.mapmap.org.

     

    Toplevel domain is not working. :( returning and empty response.