Enable of HA with DNS Type-Others

I am trying to enable the HA between the main poller and standby poller. I am not sure which DNS to select, our environment has a linux based DNS. Both of these servers are hosted in Azure cloud. What would be the best way to enable HA. If i am going with DNS type- Other then Solarwinds recommends a script to be created which can help in updating the DNS record, if someone has the script, can you please help me with the same.

  • If your DNS servers are Linux, then it's likely that they are running BIND. If there is a primary/replica relationship between the two servers, then you will want to ensure that HA is updating the primary. 

    'Azure DNS' is a SaaS DNS service that is completely separate and likely unrelated to your Linux DNS servers.