nsupdate apparently not working for me. What am I overlooking / doing wrong?
Mark Andrews
marka at isc.org
Wed Jul 29 03:04:49 UTC 2020
Make sure you are using the CORRECT name in the dig query. You used
ddns-key.ottawatch.ca instead of ddns-update.ottawatch.ca.
Also you can delete and add in the same UPDATE operation. Remove the
first “send” in nsupdate.script.
Also ottawatch.ca has DS records but the zone is not signed. You need
to fix this as lookups are failing for anyone that is validating responses.
ottawatch.ca. 86400 IN DS 63970 8 1 FE95768ADB2B2F9E87B3C6B4210D4C21766A2EC6
ottawatch.ca. 86400 IN DS 63970 8 2 1139FAEF396A03435BD093ACA623306B3307D11163188D4D5143909D 3CEF76EC
Mark
> On 29 Jul 2020, at 12:30, Brett Delmage <Brett at BrettDelmage.ca> wrote:
>
> nsupdate works according to updated contents of a dynamic zonefile but dig does not report the added A record.
>
> What am I doing stupidly here?
>
> BIND version 1:9.16.5-1+ubuntu18.04.1
> - both authoritative and local recursive
>
> zone config:
> zone "ottawatch.ca"
> {
> type master;
> file "/var/lib/bind/master/ottawatch.ca";
> allow-transfer { key "pannier-xfer"; };
> notify yes;
> update-policy { grant ddns-key.ottawatch.ca subdomain ottawatch.ca.; };
> };
>
> [do I have the correct update-policy syntax?]
> (I also tried "update-policy local" with nsupdate -l, with same results.)
>
>
> # nsupdate -D -k ddns-key.ottawatch.ca nsupdate.script
>
> nsupdate.script:
>
> server 127.0.0.1
> zone ottawatch.ca.
> update del ddns-update.ottawatch.ca. a
> send
> update add ddns-update.ottawatch.ca. 999 a 3.4.5.8
> send
>
> zone DB after update and "rndc sync" executed to incorporate .jnl:
>
> $ORIGIN .
> $TTL 900 ; 15 minutes
> ottawatch.ca IN SOA cacloud.ottawatch.ca. hostmaster.ottawatch.ca. (
> 2020072808 ; serial
> 900 ; refresh (15 minutes)
> 180 ; retry (3 minutes)
> 2419200 ; expire (4 weeks)
> 900 ; minimum (15 minutes)
> )
> NS cacloud.ottawatch.ca.
> NS pannier.ottawatch.ca.
> A 206.248.172.47
> MX 10 mail1.ottawajazzscene.ca.
> TXT "v=spf1 a ip4:206.248.172.47 -all"
> $ORIGIN ottawatch.ca.
> cacloud A 23.111.69.176
> AAAA 2607:7b00:7200:1::281a:5de2
> $TTL 999 ; 16 minutes 39 seconds
> ddns-update A 3.4.5.8 <--- nsupdate worked (it seems)
> $TTL 900 ; 15 minutes
> pannier A 206.248.172.47
> AAAA 2607:f2c0:a000:1d1::73:1
>
>
>
> # dig -4 @cacloud.ottawatch.ca cacloud.ottawatch.ca. a
>
> ; <<>> DiG 9.16.5-Ubuntu <<>> -4 @cacloud.ottawatch.ca cacloud.ottawatch.ca. a
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1862
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ; COOKIE: 195a1192604da78e010000005f20daf7193b36ec5545d879 (good)
> ;; QUESTION SECTION:
> ;cacloud.ottawatch.ca. IN A
>
> ;; ANSWER SECTION:
> cacloud.ottawatch.ca. 900 IN A 23.111.69.176
>
> ;; Query time: 0 msec
> ;; SERVER: 23.111.69.176#53(23.111.69.176)
> ;; WHEN: Tue Jul 28 22:12:07 EDT 2020
> ;; MSG SIZE rcvd: 93
>
> BUT dig does not report the nsupdate-added a record (NXDOMAIN):
>
> # dig -4 @cacloud.ottawatch.ca ddns-key.ottawatch.ca. a
>
> ; <<>> DiG 9.16.5-Ubuntu <<>> -4 @cacloud.ottawatch.ca ddns-key.ottawatch.ca. a
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49598
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ; COOKIE: 6db0ccbd0085ecca010000005f20db0f7cdb769b038236f9 (good)
> ;; QUESTION SECTION:
> ;ddns-key.ottawatch.ca. IN A
>
> ;; AUTHORITY SECTION:
> ottawatch.ca. 900 IN SOA cacloud.ottawatch.ca. hostmaster.ottawatch.ca. 2020072808 900 180 2419200 900
>
> ;; Query time: 0 msec
> ;; SERVER: 23.111.69.176#53(23.111.69.176)
> ;; WHEN: Tue Jul 28 22:12:31 EDT 2020
> ;; MSG SIZE rcvd: 133
>
>
> A record added to the dynamic zone file manually works:
>
> dig -4 @cacloud.ottawatch.ca bb.ottawatch.ca. a
>
> ; <<>> DiG 9.16.5-Ubuntu <<>> -4 @cacloud.ottawatch.ca bb.ottawatch.ca. a
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8033
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ; COOKIE: 8feed7fd82821e9a010000005f20dc3de1670c37be1dadbc (good)
> ;; QUESTION SECTION:
> ;bb.ottawatch.ca. IN A
>
> ;; ANSWER SECTION:
> bb.ottawatch.ca. 900 IN A 3.4.5.9
>
> ;; Query time: 0 msec
> ;; SERVER: 23.111.69.176#53(23.111.69.176)
> ;; WHEN: Tue Jul 28 22:17:33 EDT 2020
> ;; MSG SIZE rcvd: 88
>
>
> END OF DETAILS
>
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--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
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