Answered point by point below
Il 17/04/2023 14:23, Brian Candler ha scritto:
I suggest you specify the version of pdns authoritative you're
running, otherwise this isn't reproducible by anyone. Also what
backend you're using and how you're adding/removing records, although
I'm guessing it's probably the bind backend.
On 17/04/2023 12:50, Andrea Biancalani via Pdns-users wrote:
4) edit the zone example.com and modify contents like this
@ IN ALIAS 60 mytest.example.com.
www IN CNANE 60 @.
5) commit changes, it will popup an error
*RRset www.example.com. IN CNAME: Conflicts with pre-existing RRSET*
(assuming you meant "CNAME" not "CNANE")
Yes, that is a typo
The implication is that there is some other record for "www.example.com"
What does the following command show at that point?
dig @x.x.x.x www.example.com. any
(where x.x.x.x is your pdns-auth server's address)
the example is pretty awkward like that , let it be more significant
like this
@ IN ALIAS 60 www.google.com
www IN CNAME 60 @.
after I've applied with success above example.com zone , proceeding with
an nslookup at this point gave this result
> example.com
;; communications error to 127.0.0.1#53: timed out
Server: localhost
Address: 127.0.0.1#53
Name: example.com
Address: 142.251.209.36
> www.example.com
Server: localhost
Address: 127.0.0.1#53
www.example.com canonical name = \@.
even checking cname records leads to same result
> set q=cname
> www.example.com
;; communications error to 127.0.0.1#53: timed out
Server: localhost
Address: 127.0.0.1#53
www.example.com canonical name = \@.
while using DIG as method for the query, we obtain a pretty similar response
root@ns1:~# dig @ns1.mydnshostname.tld example.com any
; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> @ns1.mydnshostname.tld
example.com any
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45535
;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;example.com. IN ANY
;; ANSWER SECTION:
*example.com. 225 IN A 142.251.209.36**
**example.com. 74 IN AAAA 2a00:1450:4002:411::2004*
;; Query time: 0 msec
;; SERVER: 127.0.1.1#53(ns1.mydnshostname.tld) (TCP)
;; WHEN: Mon Apr 17 15:00:33 CEST 2023
;; MSG SIZE rcvd: 84
root@ns1:~# dig @ns1.mydnshostname.tld www.example.com any
; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> @ns1.mydnshostname.tld
www.example.com any
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12083
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;www.example.com. IN ANY
;; ANSWER SECTION:
*www.example.com. 60 IN CNAME \@.*
;; Query time: 0 msec
;; SERVER: 127.0.1.1#53(ns1.mydnshostname.tld) (TCP)
;; WHEN: Mon Apr 17 15:02:19 CEST 2023
;; MSG SIZE rcvd: 59
Is it possible that you deleted other records for "www.example.com"
at the same time?
Original zone has only that 2 records, editing the zone just 1 change at
a time
Again, what does "dig @x.x.x.x www.example.com. any" show at this
point, and is it different to case 5?
Same results as before
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