Hi,

How to coding this?

I want to put more dns server.



Please advise.


This post has been edited by UbuntuClient: Jan 2 2024, 11:34 AM

You may rephrase your question or provide more details.

I have more than 100 VMs running domain.

The easy way to check domain is using dns that assign to the server.

I have several dns server that running.

It's difficult to check on dns server to seek a domain.

The idea is put multiple dns server so i can on which server domain is located.

Currently i use this page but cannot put more than 5 dns server
https://www.diggui.com/

Are you trying to do nslookup with custom dns servers?

Sort of ..

dig is a dns lookup program found in linux.

https://manpages.ubuntu.com/manpages/xenial/en/man1/dig.1.html

You just need to hook it up to some kind of scripting language to run the program and format the output. There is a batch mode included in dig that would help in cutting down the code required.

Let say i have a few dns server like node1.cloudns.cc, dns1. cloudns.cc, msc111.cloudns.cc, how to put on dig?

Above example queries several popular DNS (cloudflare; google; TMNet) and you can see they give different IP addresses for a popular website.




Edit the above to your liking. Bonus points for others if they figured out how to use GNU Parallel.

Ask GPT/Bard for help in for loops in bash, if you can't program it. Also refer to dig's man pages, after you understood the low level DNS record queries.

This post has been edited by angch: Jan 3 2024, 04:51 PM

You don't. dig can only do a single query from a single name server at a time. You would need to use something like the code provided by angch to go through each of them separately.

This is very helpful!