On Sat, 2004-09-04 at 14:16, mrugan wrote:
Hy list,
My goal is to log to a linux host (slackware 9) running syslog-ng 1.6.5, libol 0.3.14, libnet 1.1.2.1 information broadcasted by multiple windows hosts running MBM (mother board monitor) via syslog logging mechanism that MBM has build in. MBM is set up to broadcast via udp 514 at 300 seconds interval readings from 12 sensors. Syslog-ng message gathering setup via filters was required [] however i encountered these problems: on the typical setup destination to a fifo pipe (mkfifo ...) every 300 seconds arrive 12 lines looking like: Sat Sep 4 14:53:54 2004 TAQWA MBM[CaseTemp]: C=39 LA=5 HA=70 L=32 H=42 A=38 Sat Sep 4 14:53:54 2004 TAQWA MBM[CPUTemp]: C=35 LA=5 HA=70 L=31 H=45 A=35 Sat Sep 4 14:53:54 2004 TAQWA MBM[VCore]: C=1.60 LA=1.90 HA=2.10 L=1.57 H=1.60 A=1.59 Sat Sep 4 14:53:54 2004 TAQWA MBM[VAGP]: C=1.60 LA=1.90 HA=2.10 L=1.60 H=1.60 A=1.60 Sat Sep 4 14:53:54 2004 TAQWA MBM[VDimm]: C=2.50 LA=3.13 HA=3.46 L=2.50 H=2.50 A=2.50 Sat Sep 4 14:53:54 2004 TAQWA MBM[Vio]: C=3.26 LA=4.75 HA=5.25 L=3.23 H=3.28 A=3.26 Sat Sep 4 14:53:54 2004 TAQWA MBM[5V]: C=5.11 LA=11.40 HA=12.60 L=5.00 H=5.11 A=5.09 Sat Sep 4 14:53:54 2004 TAQWA MBM[12V]: C=12.22 LA=-11.40 HA=-12.60 L=12.10 H=12.59 A=12.27 Sat Sep 4 14:53:54 2004 TAQWA MBM[5VSB]: C=5.43 LA=4.95 HA=5.05 L=5.43 H=5.46 A=5.43 Sat Sep 4 14:53:54 2004 TAQWA MBM[VBat]: C=3.15 LA=4.75 HA=5.25 L=3.15 H=3.15 A=3.15 Sat Sep 4 14:53:54 2004 TAQWA MBM[CPUFan]: C=3013 LA=2600 HA=99999 L=2909 H=3068 A=2974 Sat Sep 4 14:53:54 2004 TAQWA MBM[CPUMHz]: C=1760 LA=0 HA=100 L=1760 H=1760 A=1760 nothing to worry, processing goes on with sucessfull results.
beeing greedy, a simple perl script was written to illustrate capability of syslog-ng to log via program.
open(FILE, ">> /tmp/mbm-file") or die "Can't open FILE : $!\n"; while (<>) { print FILE $_; } close (FILE);
this time i noticed pieces of info missing, random lines beeing truncated, no special pattern could be distinguished, writing stops randomly while MBM logs whole 12 lines. ex: Sat Sep 4 14:53:54 2004 TAQWA MBM[CPUFan] or even Sat Sep 4 ... and so on...
Are you sure you don't have some kind of buffering problem in your perl script? I tried to reproduce the problem without success (I sent about 1000 lines to a syslog-ng running /bin/cat as the program and it nicely outputted all the lines I sent, no message was lost) Do the missing parts get written to the file at the end? -- Bazsi