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779 discussions

Subject: how to assign multiple addresses for one zone?

by Junyoung Park

Hi! I have a question to configure knot dns for split-dns server. (only master , no slaves) If my router have two interfaces, eth0 (connected with ISP) and eth1 (internal private). About same zone (ex. example.com), i want to responses different ways for eth0, eth1. (ex. eth0, www.example.com -> read /etc/knot/external.example.zone, eth1, www.example.com -> /etc/knot/internal.example.zone) How can i configure it?

11 let, 11 měsíců

DNSSEC and Zone files

by dptrash＠arcor.de

I have DNSSEC in knot-dns activated. It always signs my file and it is very difficult to change my zone file with the dnssec stuff inside. Is it possible, to keep the zone file clean and it creates a .signed file for dnssec?

11 let, 11 měsíců

Knot DNS 1.6.0-rc2 (release candidate)

by Jan Včelák

Hello list! The second release candidate of Knot DNS 1.6.0 by CZ.NIC Labs is here! The update contains just a few changes, which improve the new persistent slave zones timers feature. The database for the zone timers was being opened before the privileges were dropped and UID/GID changed. As a result, the database could not be reopened after invoking the "knotc reload" command and updated timers could not be written into the database. This problem is resolved now. If you are updating from -rc1, you will need to fix the database ownership to match your knotd user. We also increased the maximal size of the database from 10 MB to 100 MB. This should be enough for thousands of slave zones. And finally, we improved a logging of errors related to database operations. If you have a time to try the new release candidate, please, do so. The final release will probably slip a few days, but it is still scheduled for the next week. Sources: https://secure.nic.cz/files/knot-dns/knot-1.6.0-rc2.tar.gz https://secure.nic.cz/files/knot-dns/knot-1.6.0-rc2.tar.xz Have a nice weekend! Best regards, Jan, CZ.NIC Labs

11 let, 11 měsíců

Knot DNS 1.6.0-rc1 (release candidate)

by Jan Včelák

Hello everyone! Today, CZ.NIC Labs presents the first release candidate of Knot DNS 1.6.0. This comes quite soon after the release of the 1.5.3, which took place about a month ago. For this time, we were really conservative about inclusion of new features. We want to maintain Knot DNS 1.6.0 as a stable version and we intend to provide bug fixes for this release for a longer period of time. The 1.6.0 brings just one new feature - persistent timers for slave zones: The server stores zone expire, refresh, and flush timers in the file-backed database. The timers are written whenever they change and are recovered when the server is started. As a result, the timers will survive a full server restart. The persistent timers feature is an optional feature and depends on the LMDB library. Please, make sure the library is available at the build time and check the output of the 'configure' script, if you want to use this feature. We also modified domain names letter-case handling in RDATA. Previously, we preserved letter case of domain names in RDATA fields. With the 1.6.0, the domain names are converted to lower-case letters, unless the RR type is "new" and should be handled case-sensitively for compatibility with old servers. We believe that this approach is RFC-compliant. The letter case handling modification allowed us to simplify the DNSSEC signing code a little bit and also resolved problems with invalid signatures issued by Knot DNS for some mixed-case RR sets. All the other changes are various small bug fixes. Please, give Knot DNS 1.6.0-rc1 a try and report any troubles you encounter. We are looking forward to your feedback. If everything goes well, we plan to release the final version at the beginning of the next week. Sources: https://secure.nic.cz/files/knot-dns/knot-1.6.0-rc1.tar.gz https://secure.nic.cz/files/knot-dns/knot-1.6.0-rc1.tar.xz Best regards, Jan, CZ.NIC Labs

11 let, 11 měsíců

Feature requests

by josten＠no-io.net

Hey everyone, I have a production Knot DNS setup; there are two features that I believe would make it even better than what it is now. * Under the zones section a way to just "push" all master zones to slaves; the slaves should just accept any zone from a verified master in the slaves knot.conf. * The ability to just load zones from disk without explicitly stating the zone in knot.conf. For example in /var/lib/knot/example.com.zone; Knot DNS automatically loads the example.com.zone without it being identified in the knot.conf under the zone section. Of course it should do checks (like it does now) before loading the zone, and then gracefully fail and log to the logging mechanism. Other than that; awesome DNS server!

11 let, 12 měsíců

[PATCH] dnstap: Fix ProtobufCBufferSimple usage that is incorrect as of protobuf-c 1.0.0

by Robert Edmonds

protobuf-c 1.0.0 added a new 'allocator' field to ProtobufCBufferSimple that controls memory allocation, which must be NULL in order to request the default system allocator. Allocating ProtobufCBufferSimple objects on the stack without zeroing the entire object can result in protobuf-c's memory allocation functions dereferencing a garbage pointer. Note that the use of the zero initializer in this instance generates a warning on some gcc versions: dnstap.c: In function 'dt_pack': dnstap.c:26:2: warning: missing braces around initializer [-Wmissing-braces] ProtobufCBufferSimple sbuf = {0}; ^ dnstap.c:26:2: warning: (near initialization for 'sbuf.base') [-Wmissing-braces] This warning is spurious and was fixed recently: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119 https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=211289 --- src/dnstap/dnstap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/dnstap/dnstap.c b/src/dnstap/dnstap.c index 41d42e7..cf3770c 100644 --- a/src/dnstap/dnstap.c +++ b/src/dnstap/dnstap.c @@ -23,7 +23,7 @@ uint8_t* dt_pack(const Dnstap__Dnstap *d, uint8_t **buf, size_t *sz) { - ProtobufCBufferSimple sbuf; + ProtobufCBufferSimple sbuf = {0}; sbuf.base.append = protobuf_c_buffer_simple_append; sbuf.len = 0; -- 2.0.0

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knot-1.4.4-49.1.i586 on opensuse 12.2 and automatic resign zone not approved ?

by Josef Karliak

Good afternoon, I made a change in our zone, changed serial of the zone and reload the zone. When I check the syslog, I saw some complains, that the signatures was out of date. For example: Sep 26 11:31:17 slimak knot[22992]: [warning] Semantic warning in node: slimak.fnhk.cz.: RRSIG: Expired signature! Record type: A. Sep 26 11:31:17 slimak knot[22992]: [warning] Semantic warning in node: slimak.fnhk.cz.: RRSIG: Expired signature! Record type: AAAA. Sep 26 11:31:17 slimak knot[22992]: [warning] Semantic warning in node: slimak.fnhk.cz.: RRSIG: Expired signature! Record type: NSEC. This happens for all records in the zone. Last change was 11.8.2014, knot signed it and planned resign to 7.9.2014: Aug 11 13:39:10 slimak knot[22992]: Semantic checks completed for zone=fnhk.cz. Aug 11 13:39:10 slimak knot[22992]: Zone 'fnhk.cz.' reloaded (serial 2014081101) Aug 11 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - Signing started... Aug 11 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - - Key is valid, tag 64431, file Kfnhk.cz.+005+64431.private, ZSK, active, public Aug 11 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - - Key is valid, tag 26812, file Kfnhk.cz.+005+26812.private, KSK, active, public Aug 11 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - Successfully signed. Aug 11 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz.: Next signing planned on 2014-09-07T11:39:10. Aug 11 13:39:10 slimak knot[22992]: Loaded 5 out of 5 zones. Aug 11 13:39:10 slimak knot[22992]: Applied differences of 'fnhk.cz.' to zonefile. Aug 11 13:39:10 slimak knot[22992]: Configuration reloaded. Aug 11 13:39:10 slimak knot[22992]: NOTIFY of 'fnhk.cz.' to '195.113.115.171@53': Query issued (serial 2014081102). Aug 11 13:39:10 slimak knot[22992]: NOTIFY of 'fnhk.cz.' to '195.113.123.91@53': Query issued (serial 2014081102). Aug 11 13:39:10 slimak knot[22992]: NOTIFY of 'fnhk.cz.' to '89.248.244.34@53': Query issued (serial 2014081102). on 7.9.2014 the zone was resigned automatically: Sep 7 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - Signing zone... Sep 7 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - - Key is valid, tag 64431, file Kfnhk.cz.+005+64431.private, ZSK, active, public Sep 7 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - - Key is valid, tag 26812, file Kfnhk.cz.+005+26812.private, KSK, active, public Sep 7 13:39:10 slimak knot[22992]: DNSSEC: Zone fnhk.cz. - Successfully signed. Sep 7 13:39:11 slimak knot[22992]: NOTIFY of 'fnhk.cz.' to '195.113.115.171@53': Query issued (serial 2014081103). Sep 7 13:39:11 slimak knot[22992]: NOTIFY of 'fnhk.cz.' to '195.113.123.91@53': Query issued (serial 2014081103). Sep 7 13:39:11 slimak knot[22992]: NOTIFY of 'fnhk.cz.' to '89.248.244.34@53': Query issued (serial 2014081103). Sep 7 13:39:11 slimak knot[22992]: DNSSEC: Zone fnhk.cz.: Next signing planned on 2014-10-04T11:39:10. Sep 7 13:39:11 slimak knot[22992]: Outgoing IXFR of 'fnhk.cz.' to '195.113.115.171@47363': Started (serial 2014081102 -> 2014081103). Sep 7 13:39:11 slimak knot[22992]: Outgoing IXFR of 'fnhk.cz.' to '195.113.115.171@47363': Serial 2014081102 -> 2014081103. Sep 7 13:39:11 slimak knot[22992]: Outgoing IXFR of 'fnhk.cz.' to '195.113.115.171@47363': Finished in 0.01s. And after today's changes knot told me that the signatures was out of date. I've this similar version of knot on my own server, there is no problem Any ideas ? Thanks and best regards J.Karliak -- Ma domena pouziva zabezpeceni a kontrolu SPF (www.openspf.org) a DomainKeys/DKIM (with ADSP) . Pokud mate problemy s dorucenim emailu, zacnete pouzivat metody overeni puvody emailu zminene vyse. Dekuji. My domain use SPF (www.openspf.org) and DomainKeys/DKIM (with ADSP) policy and check. If you've problem with sending emails to me, start using email origin methods mentioned above. Thank you. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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Problem with CNAME in uppercase

by Didier ALBENQUE

Hi, I am currently testing knot and I have found a problem when CNAME are in uppercase. My primary server is running with BIND. I have these two declarations : myserver IN A 10.1.1.1 myserver-alias IN CNAME MYSERVER On the knot secondary server, after zone transfer, all seems ok : myserver.mydomain.fr. 900 A 10.1.1.1 myserver-alias.mydomain.fr. 900 CNAME MYSERVER.mydomain.fr. But when I ask knot for myserver-alias, I have a NXDOMAIN response (tcpdump output below) : 17:00:29.718834 IP dns-client.38146 > knot-server.domain: 4787+ A? myserver-alias.mydomain.fr. (43) 17:00:29.719011 IP knot-server.domain > dns-client.38146: 4787 NXDomain*- 1/1/0 CNAME MYSERVER.mydomain.fr. (123) 17:00:29.719555 IP dns-client.54520 > knot-server.domain: 2945+ A? myserver-alias.mydomain.fr.mydomain.fr. (54) 17:00:29.719637 IP knot-server.domain > dns-client.54520: 2945 NXDomain*- 0/1/0 (111) Tested with knot 1.5.1 and 1.5.2 Best regards, -- Didier ALBENQUE SG/SDSI/BSE Architecte technique Le café est un breuvage qui fait dormir, quand on n'en prend pas. Alphonse Allais ---------------------------------------------------------------------- Merci de nous aider à préserver l'environnement en n'imprimant ce courriel et les documents joints que si nécessaire.

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Debian archive signing key, available over https?

by Andreas Olsson

Greetings Regarding the gpg key used to sign http://deb.knot-dns.cz/debian/. Any chance that that key could be available for downloaded by way of https://, or perhaps just have its fingerprinted listed on https://www.knot-dns.cz/pages/download.html? While the https:// CA model is far from perfect it'd still like to think it being a step up compared to regular http://, and at the same time a lot easier to document than the process of following the signatures in a gpg web of trust. // Andreas

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Knot DNS v1.5.3 bugfix release

by Jan Kadlec

Hello list! CZ.NIC Labs are releasing a new version of Knot DNS today. This release fixes a regression that got introduced in the 1.5.2 release. This bug was causing Knot slaves to crash when receiving some specific IXFRs (more info: https://gitlab.labs.nic.cz/labs/knot/issues/294). Users that use Knot DNS as a slave should definitely upgrade. We've also added fixes for other issues we've recently discovered. Among those fixes are a fix to a very rare synchronization error during server reload (https://gitlab.labs.nic.cz/labs/knot/issues/296) and a fix to make dynamic query modules work properly with DNSSEC (https://gitlab.labs.nic.cz/labs/knot/issues/295). Full changelog: https://gitlab.labs.nic.cz/labs/knot/blob/v1.5.3/NEWS Sources: https://secure.nic.cz/files/knot-dns/knot-1.5.3.tar.gz https://secure.nic.cz/files/knot-dns/knot-1.5.3.tar.xz GPG signatures: https://secure.nic.cz/files/knot-dns/knot-1.5.3.tar.gz.asc https://secure.nic.cz/files/knot-dns/knot-1.5.3.tar.xz.asc We apologize for two bugfix releases in such a short time, please be assured that we're expanding our tests and we'll also be changing our release policy to try to prevent any future regressions. Special thanks for bug reports go to Anand Buddhdev and Bastien Durel. Regards and thanks for using Knot DNS, Jan -- Jan Kadlec, Knot DNS CZ.NIC Labs http://www.knot-dns.cz ------------------------------------------- Americká 23, 120 00 Praha 2, Czech Republic WWW: http://labs.nic.cz http://www.nic.cz

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