[Pdns-users] CNAMEs to foreign Hosts

[Damian]

>>www1.test.com CNAME www.test.com  ## works fine
>>www2.test.com CNAME some.other.server ## does not work at all
> 
>  That is fine, and does work. How do you ask the question to PowerDNS?
> 
> Ie, do you have your powerdns in /etc/resolv.conf? Which version of PowerDNS
> do you run? On which operating system?

PowerDNS is listening on 192.168.0.198 , my resolv.conf looks like this:

nameserver 192.168.0.198

I'm running PowerDNS 2.9.12 on Debian Woody.

>>As a recursor, I use some other DNS (Bind9):
>>recursor=192.168.0.10
> 
> Does some.other.server exist? Can 192.168.0.10 find it?
> 

Yes, I can ping/dig some.other.server

> 
>>Is there a solution to this (except using A instead CNAME )
> 
> Try asking the question using dig, and report the exact output here.
> 

I've set up another example:
(gubla.com and hosting.local are only test-domains)

mysql> select name, type, left(content,20), ttl, prio  from records 
where domain_id = 20;

+-----------------+-------+----------------------+-------+------+
| name            | type  | left(content,20)     | ttl   | prio |
+-----------------+-------+----------------------+-------+------+
| gubla.com       | SOA   | ns1.hosting.local po | 86400 | NULL |
| gubla.com       | NS    | ns1.hosting.local    | 86400 | NULL |
| gubla.com       | NS    | ns2.hosting.local    | 86400 | NULL |
| gubla.com       | MX    | mail.hosting.local   | 86400 |   25 |
| www.gubla.com   | CNAME | ns1.hosting.local    | 86400 | NULL |
| test.gubla.com  | CNAME | ns2.dmcnet.ch        | 86400 | NULL |
| samba.gubla.com | CNAME | ns1.hosting.local    | 86400 | NULL |
+-----------------+-------+----------------------+-------+------+

hosting.local is handeled by PowerDNS (192.168.0.198), dmcnet.ch is 
handled by BIND on another Maschine.

linux002:/# dig www.gubla.com

; <<>> DiG 9.2.1 <<>> www.gubla.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14578
;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.gubla.com.                 IN      A

;; ANSWER SECTION:
www.gubla.com.          86400   IN      CNAME   ns1.hosting.local.
ns1.hosting.local.      86400   IN      A       192.168.0.198

;; Query time: 4 msec
;; SERVER: 192.168.0.198#53(192.168.0.198)
;; WHEN: Fri Nov 28 18:45:38 2003
;; MSG SIZE  rcvd: 78

---- www.gubla.com is working fine :)

linux002:/# dig test.gubla.com

; <<>> DiG 9.2.1 <<>> test.gubla.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 29328
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;test.gubla.com.                        IN      A

;; AUTHORITY SECTION:
com.                    10077   IN      SOA     a.gtld-servers.net. 
nstld.verisign-grs.com. 2003113001 1800 900 604800 86400

;; Query time: 12 msec
;; SERVER: 192.168.0.198#53(192.168.0.198)
;; WHEN: Fri Nov 28 18:46:10 2003
;; MSG SIZE  rcvd: 105

---- test.gubla.com is not....

from the same machine:

linux002:/# ping ns2.dmcnet.ch
PING ns2.dmcnet.ch (81.6.6.30): 56 data bytes
64 bytes from 81.6.6.30: icmp_seq=0 ttl=254 time=4.8 ms

When digging test.gubla.com, mysql.log says the following:

select content,ttl,prio,type,domain_id,name from records where 
name='test.gubla.com'
select content,ttl,prio,type,domain_id,name from records where 
name='ns2.dmcnet.ch'
select content,ttl,prio,type,domain_id,name from records where 
name='*.dmcnet.ch'
select content,ttl,prio,type,domain_id,name from records where name='*.ch'

As soon as I change the record for test.gubla.com from a CNAME to an A 
Record (using an IP), it's working fine. But since ns2.dmcnet.ch may 
change its IP, I'd prefer to use CNAMES. Setting up the same scenario on 
Bind and also the Micro$oft DNS, everything works.

Best Regards

Damian