Skip to main content

amazon route53 - How to delegate DNS for sub-domain to domain with separate hosted zones



TL;DR: When the primary hosted zone contains two NS records, containing the name servers for the primary hosted zone (example.com) and the subdomain hosted zone (sub.example.com) would that be sufficient to get sub.domain.com resolved going over the nameserver of example.com?






Domains are currently managed by name.com but DNS should be managed by AWS Route 53 in order to automate creation of new sub-domains and set up records dynamically.



The domain ownership should stay with name.com which means a custom name server needs to be configured for the domain example.com



Subdomains like sub.example.com should be resolved through the name server of example.com as well, otherwise adding a new subdomain would require to configure a custom name server on name.com.



In the current setup, each domain and sub-domain is in its own hosted zone. example.com has a NS record and sub.example.com has one, too.
Now to delegate I have added another NS record in example.com for sub.example.com containing the name servers of sub.example.com




So two NS records in the hosted zone example.com. Yet when I run



dig @ns-of-example.com sub.example.com


I don't get an answer section, though authority section containing the right nameservers. I would have assumed dig does a recursion and then asks the authoritive nameservers listed there.



But I assume I have a flaw in my logic how the DNS protocol works here.


Answer





I don't get an answer section, though authority section containing the right nameservers.




Then you should be good. By default, dig only asks the server you told it to ask, and shows you the answer from that server.




I would have assumed dig does a recursion and then asks the authoritive nameservers listed there.




That's an incorrect assumption. If you want a recursive lookup that is a fully valid test of how the domain behaves on the Internet, you need to ask a public recursive resolver to do it for you, e.g. dig @8.8.8.8 my-sub.example.com.




Otherwise, you can get the behavior you want it you use dig ... +trace but be aware that there are circumstances where this can give you a false sense of success, because it's not doing a lookup using a recursive resolver -- which is how normal machines will do their lookups.


Comments

Post a Comment

Popular posts from this blog

linux - Awstats - outputting stats for merged Access_logs only producing stats for one server's log

I've been attempting this for two weeks and I've accessed countless number of sites on this issue and it seems there is something I'm not getting here and I'm at a lost. I manged to figure out how to merge logs from two servers together. (Taking care to only merge the matching domains together) The logs from the first server span from 15 Dec 2012 to 8 April 2014 The logs from the second server span from 2 Mar 2014 to 9 April 2014 I was able to successfully merge them using the logresolvemerge.pl script simply enermerating each log and > out_putting_it_to_file Looking at the two logs from each server the format seems exactly the same. The problem I'm having is producing the stats page for the logs. The command I've boiled it down to is /usr/share/awstats/tools/awstats_buildstaticpages.pl -configdir=/home/User/Documents/conf/ -config=example.com awstatsprog=/usr/share/awstats/wwwroot/cgi-bin/awstats.pl dir=/home/User/Documents/parced -month=all -year=all...
Post a Comment
Read more

iLO 3 Firmware Update (HP Proliant DL380 G7)

The iLO web interface allows me to upload a .bin file ( Obtain the firmware image (.bin) file from the Online ROM Flash Component for HP Integrated Lights-Out. ) The iLO web interface redirects me to a page in the HP support website ( http://www.hp.com/go/iLO ) where I am supposed to find this .bin firmware, but no luck for me. The support website is a mess and very slow, badly categorized and generally unusable. Where can I find this .bin file? The only related link I am able to find asks me about my server operating system (what does this have to do with the iLO?!) and lets me download an .iso with no .bin file And also a related question: what is the latest iLO 3 version? (for Proliant DL380 G7, not sure if the iLO is tied to the server model)
Post a Comment
Read more

hp proliant - Smart Array P822 with HBA Mode?

We get an HP DL360 G8 with an Smart Array P822 controller. On that controller will come a HP StorageWorks D2700 . Does anybody know, that it is possible to run the Smart Array P822 in HBA mode? I found only information about the P410i, who can run HBA. If this is not supported, what you think about the LSI 9207-8e controller? Will this fit good in that setup? The Hardware we get is used but all original from HP. The StorageWorks has 25 x 900 GB SAS 10K disks. Because the disks are not new I would like to use only 22 for raid6, and the rest for spare (I need to see if the disk count is optimal or not for zfs). It would be nice if I'm not stick to SAS in future. As OS I would like to install debian stretch with zfs 0.71 as file system and software raid. I have see that hp has an page for debian to. I would like to use hba mode because it is recommend, that zfs know at most as possible about the disk, and I'm independent from the raid controller. For us zfs have many benefits, ...
Post a Comment
Read more