[syslog-ng]Please help with logging remote machines

[Daniel Flick]

On Wed, 2003-11-19 at 12:26, Balazs Scheidler wrote:
> On Wed, Nov 19, 2003 at 08:53:51AM -0600, Daniel Flick wrote:
> > On Tue, 2003-11-18 at 03:06, Balazs Scheidler wrote:
> > > On Mon, Nov 17, 2003 at 02:56:49PM -0600, Daniel Flick wrote:
> > > > I have been beating my head against a wall getting this to work but no
> > > > joy.  Syslog-ng is running and logging on the local system but no remote
> > > > logs are being saved.  Devices in question are PIX firewalls and
> > > > NetCache proxies.  
> > > 
> > > Have you checked whether syslog-ng is actually receiving messages ?
> > > 
> > > tcpdump and strace would help here.
> > tcpdump shows that the firewalls are contacting the machine.
> > 
> > I was not able to get anything of value with "strace syslog-ng"  I am
> > new to this tool so I may not be using it right.  This is the only error
> > I could find but I don't know what that means.
> > 
> > open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or
> > directory)
> 
> check the pid of the syslog-ng process as it is running in the background,
> and attach to it using strace
> 
> strace -s 256 -o /tmp/syslog-ng.trace -p <syslog-ng pid>
> 
> run it for a couple of seconds, to let your firewall send syslog messages.
> Then grep the file /tmp/syslog-ng.trace for the string "recvfrom"
> 
> Each received message should have a corresponding recvfrom() call. If you
> can't see anything either syslog-ng is not correctly bound, or your packet
> filter drops syslog traffic
Interesting that I have so many syslog-ng processes.  Is this normal?
ps -aux | grep [s]yslog
root     11118  0.0  0.0  1780  808 ?        S    Nov17   1:31 syslog-ng
root     11994  0.0  0.0  1724  696 ?        S    08:31   0:01 syslog-ng
root     11999  0.0  0.0  1712  724 ?        S    09:00   0:00 syslog-ng
all all
root     12066  0.0  0.0  1708  680 ?        S    09:22   0:00 syslog-ng
root     12071  0.0  0.0  1680  652 ?        S    09:23   0:00 syslog-ng
root     12075  0.0  0.0  1688  660 ?        S    09:23   0:00 syslog-ng
root     12079  0.0  0.0  1680  652 ?        S    09:23   0:00 syslog-ng
root     12083  0.0  0.0  1700  672 ?        S    09:24   0:00 syslog-ng
root     12087  0.0  0.0  1688  656 ?        S    09:24   0:00 syslog-ng
root     12091  0.0  0.0  1684  656 ?        S    09:24   0:00 syslog-ng
root     12095  0.0  0.0  1728  740 ?        S    09:25   0:11 syslog-ng
I attached to 11999 and a few others and could not find recvfrom
anywhere.  The file is rather small and I posted one here.  I also tries
to attach to several other syslog-ng processes with the same results.  I
also verified that no filters are running that may be dropping the
packets.
cat /tmp/syslog-ng.trace
time(NULL)                              = 1069271394
poll([{fd=8, events=0}, {fd=7, events=0}, {fd=6, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=3, events=POLLIN}], 5, 100) = 0
poll([{fd=8, events=0}, {fd=7, events=0}, {fd=6, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=3, events=POLLIN}], 5, 31000) = 0
time(NULL)                              = 1069271425
poll([{fd=8, events=0}, {fd=7, events=0}, {fd=6, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=3, events=POLLIN}], 5, 100) = 0
poll([{fd=8, events=0}, {fd=7, events=0}, {fd=6, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=3, events=POLLIN}], 5, 0) = 0
getpid()                                = 11999
time(NULL)                              = 1069271425
time(NULL)                              = 1069271425
time(NULL)                              = 1069271425
poll([{fd=8, events=0}, {fd=7, events=0}, {fd=6, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=3, events=POLLIN}], 5, 100) = 0
poll( <unfinished ...>