[syslog-ng] Syslog-ng, centos7 and systemd seem to hate each other

[Scheidler, Balázs]

Hi,

Where do you see this f_undebug ?

On Feb 18, 2017 9:21 AM, "Anil Panchal" <anil.panchal8181 at gmail.com> wrote:

> Hi Guy's,
> I have one question here for you..
> What does filter (f_undebug) is used for..? what is the purpose of this
> function in syslog-ng.conf file specially in syslog forwarding rules..?
>
> Can someone help me on this..?
>
> Thanks in Advance..!!
>
> Thanks
> Anil Panchal
> On 17-Feb-2017 10:49 pm, "Jordan Ladora" <vicepresjoebiden at gmail.com>
> wrote:
>
>> Yes, selinux indeed was the issue. Not sure why my selinux config in the
>> past allowed this, but it was being blocked currently on the default port.
>>
>> Updating the policy with-
>>
>> sudo semanage port -a -t syslogd_port_t -p tcp 36598
>>
>> ...allows syslog-ng to log without having to start it manually from the
>> terminal (where, as you pointed out, it runs unconfined. Otherwise it runs
>> as syslogd_t and by default was limited to ports 514 & 601 and blocked on
>> the default tcp 36598).
>>
>> Thank you!
>>
>>
>> On Thu, Feb 16, 2017 at 6:54 PM, Scheidler, Balázs <
>> balazs.scheidler at balabit.com> wrote:
>>
>>> I have now tested this combination on centos 7, and collecting local log
>>> messages do seem to work for me.
>>>
>>> Please note that syslog-ng will detect whether it is running under
>>> systemd at runtime, and it does it this way:
>>> ```
>>>   if (lstat("/run/systemd/system/", &st) < 0 || !S_ISDIR(st.st_mode))
>>> ```
>>>
>>> e.g. it is checking whether /run/systemd/system is a directory. If it
>>> is, the system() source will use systemd-journal() as its source. If this
>>> does not exist, it will fall back to /dev/log.
>>>
>>> syslog-ng would report the result of this check with a debug level
>>> message:
>>> ```
>>>       msg_debug("Systemd is not detected as the running init system");
>>> ```
>>>
>>> or
>>>
>>> ```
>>>       msg_debug("Systemd is detected as the running init system");
>>> ```
>>>
>>> The program destination stuff should really be independent of the init
>>> system, but a different AppArmor/SELinux config might be the culprit
>>> though. When you launch it from the console, it would be unconfined, but
>>> with systemd, a policy might be applied that does NOT allow executing
>>> external programs.
>>>
>>> I hope this helps.
>>>
>>>
>>> --
>>> Bazsi
>>>
>>> On Mon, Feb 13, 2017 at 6:54 AM, Fabien Wernli <wernli at in2p3.fr> wrote:
>>>
>>>> On Fri, Feb 10, 2017 at 09:32:21PM +0000, Clayton Dukes wrote:
>>>> > If I do a 'systemctl stop syslog-ng' and then just simply type
>>>> 'syslog-ng' (no foreground, debug, etc. switches) from the command line, it
>>>> works fine.
>>>> > Rather confusing, but I can't see why the systemctl file is not
>>>> working as it should.
>>>> > Any ideas?
>>>>
>>>> try this: in a terminal run `journalctl -f` as root.
>>>> In another terminal, run `systemctl start syslog-ng`.
>>>>
>>>> If you don't see anything useful on the journalctl terminal, try
>>>> increasing
>>>> the verbosity of syslog-ng (either by editing
>>>> `/etc/sysconfig/syslog-ng`,
>>>> or by modifying
>>>> `/lib/systemd/system/syslog-ng.service` and running `systemctl
>>>> daemon-reload`).
>>>>
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>>>>
>>>>
>>>
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>>>
>>>
>>
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>>
>>
>>
> ____________________________________________________________
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