syslog-ng 3.1.1 "cuts" of the first charater of the Apache error log when forwarding
Hi all I have a weird problem with syslog-ng. I am setting up a syslog-ng client on an Apache server which forward both access and error log to a central syslog-ng server. The access log on the source has entries like this: 10.3.154.20 - - [23/Apr/2010:13:55:25 +0200] "GET /images/userLo... and this becomes like this on the syslog server: servername 10.3.154.20: - - [23/Apr/2010:13:55:25 +0200] "GET /images/use All ok with this one, but with the error log I get this on the webserver: [Fri Apr 23 13:55:25 2010] [error] [client 10.3.154.20] File doe... but this on the syslog server: servername Apr 23 13:55:25 2010] [error] [client 10.3.154.20] File do... Where is the [ character at the beginning of the timestamp gone????? Both logs use the same type configuration; I have double checked everything, but I have no clue why syslog-ng(?) does this... In wireshark the receiving syslog server is receiving it like this, so it is send like this by syslog-ng on the source server. Any idea? Met vriendelijke groeten / Cordialement / Freundliche Grüße / Best Regards Filip Nollet Bio Information System Administrator _______________________ Bayer BioScience N.V. Bio Information Management - A&S Technologiepark 38 9052 Zwijnaarde Phone: +32-9.243.04.28 Fax: +32-9.224.06.94 E-mail: filip.nollet@bayercropscience.com ________________________________________________________________________ The information contained in this e-mail is for the exclusive use of the intended recipient(s) and may be confidential, proprietary, and/or legally privileged. Inadvertent disclosure of this message does not constitute a waiver of any privilege. If you receive this message in error, please do not directly or indirectly use, print, copy, forward, or disclose any part of this message. Please also delete this e-mail and all copies and notify the sender. Thank you. For alternate languages please go to http://bayerdisclaimer.bayerweb.com ________________________________________________________________________
Hi,
I have a weird problem with syslog-ng. I am setting up a syslog-ng client on an Apache server which forward both access and error log to a central syslog-ng server.
First of all please note that you're trying to deal with non-standard-compliant messages. syslog-ng tries to parse the incoming log lines trying various known syslog formats.
The access log on the source has entries like this: 10.3.154.20 - - [23/Apr/2010:13:55:25 +0200] "GET /images/userLo... and this becomes like this on the syslog server: servername 10.3.154.20: - - [23/Apr/2010:13:55:25 +0200] "GET /images/use
The first syslog-ng (which receives the apache log) parses the line. There is no syslog header found so it falls back to the legacy format. There is neither priority code nor timestamp so the IP address becomes the program name. That's why you see it logger on the second server.
All ok with this one, but with the error log I get this on the webserver: [Fri Apr 23 13:55:25 2010] [error] [client 10.3.154.20] File doe... but this on the syslog server: servername Apr 23 13:55:25 2010] [error] [client 10.3.154.20] File do...
Where is the [ character at the beginning of the timestamp gone?????
As above, this line isn't a syslog message at all. From syslog's perspective it's more or less random junk. The trailing '[' causes that there is no program name at all and the parser thinks the following string up to the closing ']' is the pid like in normal logs eg. programname[pid] I don't see how could this "pid" appear on the receiving side with only the closing brace. Please show your configs and the captured network packet too. In general when an app doesn't speak syslog formats and there is no option to format its logs properly then using the no-parse option (on all syslog-ng servers the log passes through) or writing a small app which reformats the logs and feeds to syslog-ng is the way to go. Regards, Sandor
participants (2)
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filip.nollet＠bayercropscience.com
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Sandor Geller