2

I have an application that has a lot of worker servers, and the servers number is increasing with time, I want to assign a sub-domain for each one of these servers, for example: srv1.domain.com ... srv100.domain.com, my main goal is to serve files from them.

Beside creating an A DNS record for each one of these servers, is there a better way to do this ?

I checked the DNS records for a domain that has a similar setup, I've found that the root domain doesn't have any A records for the sub-domains, but the sub-domains have, for example:

Using dig:

$ dig rootdomain.com ANY

It showed the NS records without any A records at all for the sub-domains, but

$ dig srv1.sub.rootdomain.com ANY

Showed an A record pointing to the server, how is that possible ? and how can I have a similar setup ?

2

You seem to be on the right path. If you intend to give each server an IP address, then you will need to create an A record for each server/sub-domain.

  • What if the number increases a lot ? isn't there a limit for the records ? – Pierre Nov 11 '14 at 17:38
  • 1
    @Peter Only in regard to the number of IP addresses you have assigned. Otherwise, there is no limit. Case in point: subscriber lines, telecos that assign a sub-domain name per IP address that a user will use. Large scale DSL installations, for example, will use a single IP address and assigned sub-domain to identify the connection. – closetnoc Nov 11 '14 at 17:54

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.