[syslog-ng] Syslog messages not stored in separate lines

Dragan Zecevic dragan.zecevic at live.com
Thu Feb 2 13:55:59 UTC 2023


Hi Balazs,

this is how the whole config snippet looks like:

source s_xxx_xxx {
        network(
                ip(0.0.0.0)
                transport(tcp)
                port(xxxx)
                flags(store-raw-message)
        );
};



filter filter_xxx_xxx {

                host("xxx") or host("xxx") ...;
};


destination folder_xxx_xxx {

                file(
                        "/xxx/.../xxx/${R_YEAR}${R_MONTH}${R_DAY}/${SOURCEIP}_${HOST}_${R_HOUR}.log"
                        template("${RAWMSG}\n")
                        dir-group(xxx)
                        dir-perm(xxx)
                        group(xxx)

                );
};


log {
                source(s_xxx_xxx); filter(filter_xxx_xxx); destination(folder_xxx_xxx);
};

Sorry for the xxx but I can't export real parameters in conversation like this. Also, I can't provide some pcap or tcpdump.

I restarted syslog-ng multiple times because I also added some other sources and there were no error messages. And this is the only part of the configuration where either this destination or folder are used.

I hope this info is helpful.

Thanks,
Dragan

________________________________
From: syslog-ng <syslog-ng-bounces at lists.balabit.hu> on behalf of Balazs Scheidler <bazsi77 at gmail.com>
Sent: Tuesday, January 31, 2023 9:18 PM
To: Syslog-ng users' and developers' mailing list <syslog-ng at lists.balabit.hu>
Subject: Re: [syslog-ng] Syslog messages not stored in separate lines

If there's an initialization error with a config at reloading, syslog-ng can fall back to the old one. Can this happen? Or two destinations writing the same file?

If the problem persists, can you create minimal example with complete with config and sample message that you send and which reproduces the issue?

Thanks

On Tue, Jan 31, 2023, 20:44 Dragan Zecevic <dragan.zecevic at live.com<mailto:dragan.zecevic at live.com>> wrote:

Hi Balazs,
thank you for your reply.
Yes, I used config like this for other sources as well and restarted syslog-ng service.
I don't get it why it doesn't work in this case. I was thinking it is up to the input.

________________________________
From: syslog-ng <syslog-ng-bounces at lists.balabit.hu<mailto:syslog-ng-bounces at lists.balabit.hu>> on behalf of Balazs Scheidler <bazsi77 at gmail.com<mailto:bazsi77 at gmail.com>>
Sent: Monday, January 30, 2023 6:48 AM
To: Syslog-ng users' and developers' mailing list <syslog-ng at lists.balabit.hu<mailto:syslog-ng at lists.balabit.hu>>
Subject: Re: [syslog-ng] Syslog messages not stored in separate lines

This would be very strange indeed as the template of your file destination includes a newline character at the end of every message, so it should not depend on the input.

You sure that this is the destination config that you quote here? Did you reload syslog-ng to use that config?

On Sun, Jan 29, 2023, 13:55 Dragan Zecevic <dragan.zecevic at live.com<mailto:dragan.zecevic at live.com>> wrote:

Hi,
I am collecting logs from a network device. They configured syslog format on their source side to be RFC3164.

On syslog-ng side I am using source and destination like this:

source s_xxx {
        network(
                ip(0.0.0.0)
                transport(tcp)
                port(xxx)
                flags(store-raw-message)
        );
};


destination folder_xxx {

                file(
                        "/xxx/${R_YEAR}${R_MONTH}${R_DAY}/${SOURCEIP}_${HOST}_${R_HOUR}.log"
                        template("${RAWMSG}\n")
                );
};

syslog-ng version 3.34
CentOS Linux release 7.9.2009

The problem is that syslog messages are stored in raw format but not separated in different line. Parity bit of new message starts imidiatelly after previous line -without space or enter.

I have the same config for some other hosts and there log files are created with separate lines. Vendor says they can't change anything on source side.

Do you have any idea what is the cause of this?

Thank you.

Br,
Dragan


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Member info: https://lists.balabit.hu/mailman/listinfo/syslog-ng
Documentation: http://www.balabit.com/support/documentation/?product=syslog-ng
FAQ: http://www.balabit.com/wiki/syslog-ng-faq

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