[syslog-ng] syslog-ng version 26.1 running in a docker image from docker hub (balabit/syslog-ng)

Laszlo Szemere (lszemere) Laszlo.Szemere at oneidentity.com
Fri Nov 13 11:04:22 UTC 2020


Hello Uwe,

 first of all: thank you for sharing your config and exact Syslog-ng versions. It helps a lot.

 At first look I cannot see any problem with your config. However, there were a lot of changes between version 3.5.6 and 3.26.1 (You might want to take a look at "cisco-parser()")


 If you suspect this is a filter problem, may I suggest starting Syslog-ng in a debug mode? example: https://github.com/balabit/syslog-ng-docker/issues/58#issuecomment-680674916
 In this case you should see messages like:

    >>>>>> filter rule evaluation begin; rule='foobar', location='/conf/syslog-ng.conf:15:16', msg='0x7efd38015c40'
    <<<<<< filter rule evaluation result; result='UNMATCHED - Dropping message from LogPipe', rule='foobar', location='/conf/syslog-ng.conf:15:16', msg='0x7efd38015c40'


If this does not help finding the problematic filter, I might need some example logs to trace down any parsing issues.



Best regards,
Laci






________________________________
From: syslog-ng <syslog-ng-bounces at lists.balabit.hu> on behalf of Martin, Uwe <uwe.martin at festo.com>
Sent: Friday, November 13, 2020 11:15
To: syslog-ng at lists.balabit.hu <syslog-ng at lists.balabit.hu>
Subject: [syslog-ng] syslog-ng version 26.1 running in a docker image from docker hub (balabit/syslog-ng)

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Hello,



We have a problem after an upgrade form syslog-ng version 3.5.6 to version 26.1 in a docker container.

CONTAINER ID        IMAGE                      COMMAND                  CREATED             STATUS              PORTS               NAMES

d8c8c3380a71        balabit/syslog-ng:3.26.1   "/usr/sbin/syslog-..."   About an hour ago   Up About an hour



Now not all logs from the devices are seen and forwarding to another log gateway is also not working. With tcpdump I see the packets on the interface. I seems some filter will not work. I add our config. Anybody an idea how to troubleshoot or fix this problem?



Kind regards



Uwe





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