question about Subdomain query to Domain

[Kevin Darcy]

If the .10 server is authoritative for the root zone, that should work.

It's not very redundant, though. I'd recommend, at the very least, 
listing multiple root servers, if they are available. If no others are 
available, I'd recommend making the .20 server a slave to the .10 server 
for the root zone. You might want to make the .20 server a slave for the 
root zone regardless, unless you expect that zone to be changing very 
frequently.

- Kevin

Truong Tan Son wrote:

>Dear Sir,
>
>Following you teach, I insert root hints to yy.yy.yy.20 (dns1.sub.domain.com) to query to parent "domain.com".
>
>** /etc/named.conf:
>options {
>        directory "/var/named";
>};
>zone "." IN {
>        type hint;
>         ^^^^^^^     
>        file "/var/named/root.hint";
>            ^^^^^^^^^^^^^^^^^
>};
>zone "sub.domain.com" IN {
>        type master;
>        file "/var/named/sub.domain.com.db";
>        allow-update { any;};
>};
>
>** /var/named/root.hint
>.                               99999    IN     NS    root.domain.com.
>root.domain.com.     99999    IN     A       xx.xx.xx.10
>
>
>Now, it works.Subdomain can query to parent.
>
>
>It that right ?
>
>
>regards,
>--
>
>
>  
>
>>My server currently is running Bind 9, and have trouble to query to root domain server.
>>
>>domain name:            domain.com
>>server-ip                   root.domain.com (xx.xx.xx.10)
>>
>>subdomain name:     sub.domain.com
>>sub-server-ip:          dns1.sub.domain.com (yy.yy.yy.20)
>>
>>
>>I setting on   yy.yy.yy.20 :
>>
>>#/etc/named.conf
>>....
>>zone "sub.domain.com" IN {
>>       type master;
>>       file "/var/named/sub.domain.com.db";
>>       allow-transfer { xx.xx.xx.10;};
>>};
>>
>>#/var/named/sub.domain.com.db:
>>....
>>                                 IN      NS      dns1.sub.domain.com.
>>                                 IN      NS      root.domain.com.
>>root.domain.com.       IN      A         xx.xx.xx.10
>>
>>mail                            IN      A        yy.yy.yy.ab
>>www                          IN      A        yy.yy.yy.cd
>>
>>
>>DNS clients using yy.yy.yy.20 (dns1.sub.domain.com) can not query  records of  xx.xx.xx.10 (root.domain.com).
>>
>>Do I have missing on config file above ?
>>
>>    
>>
>How is the .20 server set up to resolve queries outside of the 
>sub.domain.com zone? Forwarding, root hints, stub zone(s), what? Perhaps 
>you should have shown us your entire config, so we wouldn't have to go 
>around guessing at such things...
>
>- Kevin
>
>
>
>
>
>
>  
>