[syslog-ng] Basic (?) multi line question

[C. L. Martinez]

Hi Jim,

 Some time ago, I have tried the same: correlate logs for Ironport
devices. And my conclusion was: impossible. I loose a lot info and
some correlated logs are wrong ...

 The only approach that maybe should work with opensource tools, IMO,
is rsyslog+sec.pl. But, as a Orangepeel says, logstash can be an
option.

Bye.

On Mon, Apr 28, 2014 at 2:44 PM,  <jrhendri at roadrunner.com> wrote:
> Hmmm - crickets :-)
>
> I have some examples like this:
> <date> <host> <program>: Info: New SMTP ICID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: Start MID [0-9]{9} ICID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: Start MID [0-9]{9} ICID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: Start MID [0-9]{9} ICID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: Start MID [0-9]{9} ICID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: New SMTP DCID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: Message done DCID [0-9]{9} MID [0-9]{9} <rest of message>
> <date> <host> <program>: Info: ICID [0-9]{9} close
>
> this is only an example to illustrate the different message elements that contain different kinds of IDs.
>
> The issue is there will be interleaving with *different* ICID (inbound connections from different SMTP servers) each sending multiple MIDs (message IDs) and also different DCID (destination connections *to* different mail relays).
>
> I have been looking at multi-line-mode(regexp) but that seems to imply all consecutive lines until the next regex match are assumed to be part of the same message.
>
> I hope I can do something where all matching ICIDs are treated as part of one line, that can be parsed separately.
>
> Not sure if this is possible with multi-line-mode *or* with some patterndb wizardry.
>
> Has anyone addressed this?
>
> Thanks for any working-examples/guidance/sympathy (in roughly that order :-)
>
> Jim
>
>
>
>
> ---- jrhendri at roadrunner.com wrote:
>> Hi,
>>
>>   I am trying to parse data elements out of a variable number of log lines that all are associated by a single unique key.
>>
>> Specifically - they are Cisco IronPort email logs that have various "ID" fields (MID - message ID is the most common)
>>
>>
>> Essentially I want to pull the MID out of the line marked marked:
>>
>> "Start MID (\d+) <other stuff>"
>>
>>  and then process every line that matches that specific MID value as part of the message.
>>
>> Note: they all have this string included somewhere:
>>
>> "MID (\d+) "
>>
>> Up to a reasonable timeout - or ended by:
>>
>>  "Message finished mid (\d+) done" with the matching ID.
>>
>> Is this possible with syslog-ng? (OSE or PE?)
>>
>> I thought I had seen something using patterndb but I cannot seem to find the reference
>>
>> Clearly there will be interleaved lines with *different* MIDs that need to be processed independently.
>>
>> Thanks in advance!
>> Jim
>
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