17 Zář
2012
17 Zář
'12
15:43
Hello,
Thank you for your answer. I have tested it and it seems to work.
Best regards,
Eduardo Duarte
SIT-DNS
DNS.PT - https://www.dns.pt/
FCCN - http://www.fccn.pt/
Marek Vavruša wrote, On 17-09-2012 14:02:
Hello Eduardo,
this is a known bug in probably libc in CentOS6 or equivalent RHEL.
Workaround is to disable recvmmsg backend on configure with configure
flag "--enable-recvmmsg=no"
$ cd knot-src
$ autoreconf -if
$ ./configure --enable-recvmmsg=no
$ make && sudo make install
For more information see:
https://bugzilla.redhat.com/show_bug.cgi?id=760177
Please let me know if it works for you.
Kind regards,
Marek
--
Marek Vavruša 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
On 17 September 2012 11:34, Eduardo Duarte <eduardo.duarte(a)fccn.pt> wrote:
> Hello,
>
> I have setup a KNOT dns server but I'm having troubles with the UDP queries.
> The server is not answering to the UDP queries but it is answering to
> queries in TCP.
> The server is running on a CentOS release 6.3 (Final) and the configuration
> file is the following.
> *************knot.conf***********
> system {
> identity "Yet.another.server";
> nsid "Yet.another.server";
> storage "/opt/knot_run/knot-minimal";
> pidfile "/opt/knot_run/knot.pid";
> user root;
> }
>
> interfaces {
> ipv4 { address 127.0.0.1@53; }
> ipv4 { address 193.137.197.25@53; }
> }
>
> remotes {
> ns-test01 { address 193.136.192.86@53; }
> ns-test02 { address 193.136.192.87@53; }
> ns-test03 { address 193.137.196.30@53; }
> ns-test04 { address 193.137.196.31@53; }
> }
>
> zones {
>
> zonetest-01.dns.pt {
> file "/opt/knot_run/zones/zonetest01";
> xfr-in ns-test01;
> notify-in ns-test01;
> }
>
> zonetest-06.dns.pt {
> file "/opt/knot_run/zones/zonetest06";
>
> }
> }
>
> log {
> file "/opt/knot_run/log/knot.log" { any all; }
> }
> **********************************
> The output of the log file is
> ********knot.log******************
> 2012-09-17T10:25:40.208574+01:00 Stopping server...
> 2012-09-17T10:25:40.210677+01:00 Server finished.
> 2012-09-17T10:25:40.211260+01:00 Shut down.
> 2012-09-17T10:25:40.230967+01:00 Binding to interface 127.0.0.1 port 53.
> 2012-09-17T10:25:40.231283+01:00 Binding to interface 193.137.197.25 port
> 53.
> 2012-09-17T10:25:40.232162+01:00 Loading 2 compiled zones...
> 2012-09-17T10:25:40.233783+01:00 Loaded zone 'zonetest-01.dns.pt.'
> 2012-09-17T10:25:40.237553+01:00 Loaded zone 'zonetest-06.dns.pt.'
> 2012-09-17T10:25:40.238983+01:00 Loaded 2 out of 2 zones.
> 2012-09-17T10:25:40.239044+01:00 Configured 2 interfaces and 2 zones.
> 2012-09-17T10:25:40.239078+01:00
> 2012-09-17T10:25:40.239111+01:00 Starting server...
> 2012-09-17T10:25:40.240688+01:00 Server started as a daemon, PID = 8599
> 2012-09-17T10:25:40.240772+01:00 PID stored in /opt/knot_run/knot.pid
> *********************************
> And an example of the query's
> *********************************
> [root@ns-test06 ~]# dig @127.0.0.1 zonetest-06.dns.pt +tcp
>
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.1 <<>>
@127.0.0.1
> zonetest-06.dns.pt +tcp
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30969
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 0
> ;; WARNING: recursion requested but not available
>
> ;; QUESTION SECTION:
> ;zonetest-06.dns.pt. IN A
>
> ;; ANSWER SECTION:
> zonetest-06.dns.pt. 3600 IN A 193.137.196.42
>
> ;; AUTHORITY SECTION:
> zonetest-06.dns.pt. 3600 IN NS ns-test01.dns.pt.
> zonetest-06.dns.pt. 3600 IN NS ns-test02.dns.pt.
> zonetest-06.dns.pt. 3600 IN NS ns-test03.dns.pt.
> zonetest-06.dns.pt. 3600 IN NS ns-test04.dns.pt.
> zonetest-06.dns.pt. 3600 IN NS ns-test06.dns.pt.
>
> ;; Query time: 2 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Mon Sep 17 10:25:49 2012
> ;; MSG SIZE rcvd: 202
>
> [root@ns-test06 ~]# dig @127.0.0.1 zonetest-06.dns.pt
>
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.1 <<>>
@127.0.0.1
> zonetest-06.dns.pt
> ; (1 server found)
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
> *********************************
>
> Can anyone help me with this problem?
>
> Best regards,
>
> --
> Eduardo Duarte
> SIT-DNS
> DNS.PT - https://www.dns.pt/
> FCCN - http://www.fccn.pt/
>
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