Some problems when running zmq destination with syslog-ng 3.7.2

[litterbear]

I found there are problems when running zmq destination with syslog-ng 3.7.2

It compiles successfully, but it fails when running with the configuration below.

@version: 3.7
@include "scl.conf"
source      s_system { system(); internal(); };

destination zmq_des {
    zmq(
      port(5557)
    );
};

log { source(s_system); destination(zmq_des); };

I tried by

1. compiling from the source in my ubuntu 14.04 server
2. compiling in the syslog-ng-incubator-dev docker image.
   Both tries failes with following message

[2016-03-22T11:26:37.194081] Module loaded and initialized successfully; module='sdjournal'
[2016-03-22T11:26:37.194124] Finishing include; content='source confgen system', depth='1'
[2016-03-22T11:26:37.194447] Module loaded and initialized successfully; module='zmq'
/usr/sbin/syslog-ng: symbol lookup error: /usr/lib/syslog-ng/3.7/libzmq.so: undefined symbol: init_sequence_number

I look into the code and found the reason is that the init_sequence_number function is not included. Include "lib/misc.h" solve the problem when it is syslog-ng 3.7.2.

However init_sequence_number is in lib/misc.h in syslog-ng 3.7.2, and init_sequence_number is in lib/seqnum.h in syslog-ng 3.8

How should I include the file?

PS:
If I use the syslog-ng 3.8 in the master version to compile syslog-ng-incubator, problems like #149 will be encountered.

[juhaszviktor]

Hi,

Incubator is able to use 3.7.x (e.g.: 3.7.2). The main problem is, that the misc.h is not included in zmq-destination.c

If I do the include it seems working

[litterbear]

However, init_sequence_number is moved to other files in 3.8.
So I'm wondering which file should be include.

[juhaszviktor]

Unfortunatelly, we do not support the syslog-ng 3.8 in incubator, yet

[litterbear]

I see now. :)
Opened a PR #151 for this just now.

[juhaszviktor]

Thanks, merged

[liberatorqjw]

Hey
Can I make ask some thing for your help?
I make a conf like this
`@version: 3.7
@include "scl.conf"
source s_system { system(); internal(); };

destination zmq_des {
zmq(
port(5557)
);
};

log { source(s_system); destination(zmq_des); };but I get the error like the following:* Reload system logging syslog-ng Error parsing destination, destination plugin zmq not found in /usr/local/syslog-ng/etc/syslog-ng.conf at line 38, column 6:

    zmq(
    ^^^

syslog-ng documentation: http://www.balabit.com/support/documentation/?product=syslog-ng
mailing list: https://lists.balabit.hu/mailman/listinfo/syslog-ng
but I run the syslog-ng --module-registry I can get the information like this:Module: zmq
Status: ok
Version: 0.5.0
Core-Revision: Dummy Revision
Description:
The zmq module provides ZeroMQ destination support for syslog-ng.
Plugins:
source zmq
destination zmq

`
So, how can I solve it?
thank you

[litterbear]

@liberatorqjw It looks weird.
Did you try to restart syslog-ng instead of reloading it ?

[liberatorqjw]

@litterbear I did , but it is also the same error