17 Zář
2012
17 Zář
'12
15:02
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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