[Pdns-users] Pipe Backend not working correctly

[abang]

Hi,

your pipe-timeout is 5 *ms*. This is possibly too less (depending on 
your pipe-backend).

See http://doc.powerdns.com/from3.1to3.2.html

Am 27.01.2013 23:17, schrieb Roman Gaufman:
> Hi :)
>
> This is the pipe-command related stuff in my pdns.conf (rest is default):
>
> launch=pipe,bind
> pipe-command=/etc/powerdns/dns_pipe.rb
> pipebackend-abi-version=2
> pipe-timeout=5
> distributor-threads=1
>
> When I use the vanilla Ubuntu package that comes in Precise, it works
> for a few days, then it stops responding to requests. I have enabling
> logging but all I see is:
>
> Jan 27 21:25:26 zanview pdns[30070]: Query:
> 'Q#011zanview.com#011IN#011SOA#011-1#01162.189.34.89#0110.0.0.0
> <http://011zanview.com#011IN#011SOA#011-1#01162.189.34.89#0110.0.0.0>'
> Jan 27 21:25:26 zanview pdns[30070]: Query:
> 'Q#011zanview.com#011IN#011ANY#011-1#01162.189.34.89#0110.0.0.0
> <http://011zanview.com#011IN#011ANY#011-1#01162.189.34.89#0110.0.0.0>'
>
> I have no idea what is happening, pdns is not growing in memory and
> taking a low 0.1% cpu but the pipe backend simply stops responding after
> a few days!
>
> I saw that pdns had some commits related to the pipe backend so I've
> upgrade to the official package: pdns-static 3.2-1
>
> Now when I run pdns_server I see this in the log:
>
> Jan 27 22:13:19 zanview pdns[13883]: Engaging bypass - now operating
> unthreaded
> Jan 27 22:13:19 zanview pdns[13883]: [PIPEBackend] Fatal argument error:
> Timeout waiting for data from coprocess
> Jan 27 22:13:19 zanview pdns[13883]: Caught an exception instantiating a
> backend: Timeout waiting for data from coprocess
> Jan 27 22:13:19 zanview pdns[13883]: Cleaning up
> Jan 27 22:13:19 zanview pdns[13883]: Got a signal 6, attempting to print
> trace:
> Jan 27 22:13:19 zanview pdns[13883]: /usr/sbin/pdns_server-instance()
> [0x6b6ce0]
> Jan 27 22:13:19 zanview pdns[13883]:
> /lib/x86_64-linux-gnu/libc.so.6(+0x364a0) [0x7f56908774a0]
> Jan 27 22:13:19 zanview pdns[13883]:
> /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35) [0x7f5690877425]
> Jan 27 22:13:19 zanview pdns[13883]:
> /lib/x86_64-linux-gnu/libc.so.6(abort+0x17b) [0x7f569087ab8b]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x115)
> [0xb62315]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(_ZN10__cxxabiv111__terminateEPFvvE+0x6)
> [0xb60756]
> Jan 27 22:13:19 zanview pdns[13883]: /usr/sbin/pdns_server-instance()
> [0xb60783]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(__cxa_rethrow+0x46) [0xb60806]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(_ZN17BackendMakerClass3allEb+0x6e9)
> [0x69b179]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(_ZN12UeberBackendC1ERKSs+0x169) [0x6c0709]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(_ZN13PacketHandlerC1Ev+0x20) [0x673080]
> Jan 27 22:13:19 zanview pdns[13883]: /usr/sbin/pdns_server-instance()
> [0x6f28a1]
> Jan 27 22:13:19 zanview pdns[13883]:
> /usr/sbin/pdns_server-instance(_Z7qthreadPv+0xb38) [0x6f4948]
> Jan 27 22:13:19 zanview pdns[13883]:
> /lib/x86_64-linux-gnu/libpthread.so.0(+0x7e9a) [0x7f5690f03e9a]
> Jan 27 22:13:19 zanview pdns[13883]:
> /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7f5690934cbd]
> Jan 27 22:13:20 zanview pdns[13670]: Our pdns instance (13883) exited
> after signal 6
> Jan 27 22:13:20 zanview pdns[13670]: Respawning
>
> Here is the pipe script in action:
>
> ~ # sudo -u pdns /etc/powerdns/dns_pipe.rb
> Qtest_hostIN      ANY-1192.0.43.10
> DATAtest_hostINA120-189.207.135.250
> END
>
> So it doesn't appear to be the script or anything to do with permissions.
>
> Any ideas what am I doing wrong?