On Thu, 2007-04-05 at 08:29 -0400, Jean-Michel Philippon-Nadeau wrote:
Balazs Scheidler wrote:
On Wed, 2007-04-04 at 11:01 -0400, Jean-Michel Philippon-Nadeau wrote:
Good day everyone,
We use syslog-ng to store and organize the logs of our machines (~3900). For every host we have, syslog-ng creates a folder with the hostname or the ip address (if it couldn't determine the hostname) of the machine and then stores the logs.
We also have 5 switches that can report logs with standard syslog capabilities (udp on port 514). The problem is that syslog-ng doesn't create the folder for these switches and doesn't store their logs. I made sure there was no network problems by using tcpdump - the packets correctly made it to the central syslog-ng host. Yes, of course, I made sure udp(); was in my source declaration.
Does anyone know how I can make sure syslog-ng receives the logs?
the message sent by the switch might not be in a format that syslog-ng accepts and this way the message gets to the wrong destination.
can you paste a single log message as received by the syslog-ng host? ie. a message you captured using tcpdump.
Here is a login failure from ssh to the switch received by tcpdump -A -vv to a specific interface, a specific hos (a switch) and on UDP port 514.
08:10:15.767285 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto 17, length: 88) 192.168.175.2.syslog > 192.168.175.1.syslog: UDP, length 60
E..X..@.@.[@.............D..Login failed for user adminccs through ssh (192.168.10
hmm. this line does not include a log header (no pri, no header, no host, nothing) syslog-ng will probably think (but I'd have to check) that "Login" is the hostname, and depending on your keep_hostname() setting, it either replaces Login with the host that sent the UDP frame, or leaves Login alone, and thinks that it is a hostname (and thus stores messages in a subdirectory named "Login"). the solution is to 1) file a bug report to the vendor to fix their syslog message format 2) try to tune the bad_hostname() option to indicate that "Login" is a bad hostname. -- Bazsi