Pdns: libgmysqlbackend.so

[ikbenjoeri]

Ubuntu 16.04 with MariaDB 10.1

Apr 26 18:15:00 ns1 pdns[2121]: Guardian is launching an instance
Apr 26 18:15:00 ns1 pdns[2121]: Reading random entropy from '/dev/urandom'
Apr 26 18:15:00 ns1 pdns[2121]: Loading '/usr/lib/powerdns/libgmysqlbackend.so'
Apr 26 18:15:00 ns1 pdns[2121]: Unable to load module '/usr/lib/powerdns/libgmysqlbackend.so': /usr/lib/powerdns/libgmysqlbackend.so: cannot open shared object file: No such file or directory
Apr 26 18:15:00 ns1 pdns[2121]: DNSBackend unable to load module in gmysql
Apr 26 18:15:01 ns1 pdns[2062]: Our pdns instance exited with code 1, respawning

root@ns1:/# apt-get install pdns-backend-mysql
Reading package lists... Done
Building dependency tree
Reading state information... Done
pdns-backend-mysql is already the newest version (4.0.0~alpha2-3build1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ns1:/#

[Habbie]

This looks like a support question, please use IRC or the pdns-users mailing list.

On April 26, 2016 6:16:09 PM GMT+02:00, Joeri Frantz [email protected] wrote:

Ubuntu 16.04 with MariaDB 10.1

Apr 26 18:15:00 ns1 pdns[2121]: Guardian is launching an instance
Apr 26 18:15:00 ns1 pdns[2121]: Reading random entropy from
'/dev/urandom'
Apr 26 18:15:00 ns1 pdns[2121]: Loading
'/usr/lib/powerdns/libgmysqlbackend.so'
Apr 26 18:15:00 ns1 pdns[2121]: Unable to load module
'/usr/lib/powerdns/libgmysqlbackend.so':
/usr/lib/powerdns/libgmysqlbackend.so: cannot open shared object file:
No such file or directory
Apr 26 18:15:00 ns1 pdns[2121]: DNSBackend unable to load module in
gmysql
Apr 26 18:15:01 ns1 pdns[2062]: Our pdns instance exited with code 1,
respawning

root@ns1:/# apt-get install pdns-backend-mysql
Reading package lists... Done
Building dependency tree
Reading state information... Done
pdns-backend-mysql is already the newest version
(4.0.0~alpha2-3build1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ns1:/#

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[christianbur]

same problem after upgrade form Ubuntu 14.04 TLS to Ubuntu 16.04 TLS.
Wath's the problem?

root@server:/# ls -al /usr/lib/powerdns
ls: cannot access '/usr/lib/powerdns': No such file or directory

during the upgrade i had a Problem with the packet "pdns-backend-mysql"

[christianbur]

very strange, the Ubuntu 16.04 LTS an Alpha as prod version.

pdns_server --version
May 26 17:57:57 PowerDNS Authoritative Server 4.0.0-alpha2 (C) 2001-2016 PowerDNS.COM BV

[christianbur]

The parameter "module-dir=/usr/lib/powerdns" in pdns.conf is the problem.

default config: /usr/share/pdns-server/pdns.conf

[Habbie]

If the default config that ubuntu ships is broken, please take it up with them, or their upstream Debian. Reopening this ticket to track that.

[ikbenjoeri]

To fix this problem you should use:
module-dir=/usr/lib/x86_64-linux-gnu/pdns

[Habbie]

No, please remove the module-dir setting completely, or another upgrade might break you again.

[christianbur]

the default configuration in Ubuntu 16.04 LTS is correct, the problem occurs when you take the "old" configuration of ubuntu 14:04 TLS during the upgrade.

it's a admin problem not a powerdns problem

[rudyrockstar]

Just posting this as it can be useful addressing the "Unable to load module '/usr/lib/powerdns/libgmysqlbackend.so': " issue. You can build your dependency from the source. This for FreeBSD using Mariadb backend having installed the Mariadb client and PowerDNS server.

mkdir $HOME/pdnslib;cd $HOME/pdnslib;fetch --no-verify-peer https://downloads.powerdns.com/releases/pdns-4.0.3.tar.bz2;gunzip *;tar xf *;cd pdns-4.0.3;./configure --with-modules="bind gmysql";make;cd $HOME

[ su to root(BSD) ]

cp pdnslib/pdns-4.0.3/modules/gmysqlbackend/.libs/libgmysqlbackend.so /usr/local/lib/pdns/;service pdns restart

enjoi

[samuelgray]

@rudyrockstar Many, many thanks!!
I'm running FreeBSD 10.3, and this solution worked perfectly, word for word.

[tobiascapin]

I tried those instructions but I had this error:

May 15 13:20:01 Reading random entropy from '/dev/urandom'
May 15 13:20:01 Loading '/usr/lib/x86_64-linux-gnu/pdns/libgmysqlbackend.so'
May 15 13:20:01 Unable to load module '/usr/lib/x86_64-linux-gnu/pdns/libgmysqlbackend.so': /usr/lib/x86_64-linux-gnu/pdns/libgmysqlbackend.so: undefined symbol: _ZN10DNSBackend7getAuthEP9DNSPacketP7SOADataRK7DNSName
May 15 13:20:01 DNSBackend unable to load module in gmysql

[Habbie]

@tobiascapin your pdns_server and libgmysqlbackend versions are not the same.

This is not a support channel. For support, please find us on the mailing lists or IRC channel via https://www.powerdns.com/opensource.html