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Linux iotstat graphs

Submitted by Stef on Mon, 06/12/2010 - 21:49
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Plain text icon linux-iostat.pl_.txt2.18 KB
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Xymon EN

Server patch

Patch the server so it accepts trends messages: http://www.hswn.dk/hobbiton/2007/01/msg00236.html

Client script

Make sure the command iostat is installed (for debian/ubuntu this is package =sysstat=) Add the script to the file clientlaunch.cfg on the linux client so it is executed every 5 minutes (remove the .txt extension): 
[linux-iostat]
   ENVFILE $HOBBITCLIENTHOME/etc/hobbitclient.cfg
   CMD $HOBBITCLIENTHOME/ext/linux-iostat.pl
   LOGFILE $HOBBITCLIENTHOME/logs/linux-iostat.log
   INTERVAL 5m

graph defintions

Add to hobbitgraph.cfg: 
[iostat-disk]
   TITLE disk read and write
   YAXIS KB/s
   FNPATTERN iostat-disk.(.*).rrd
   DEF:Kb_read@RRDIDX@=@RRDFN@:Kb_read:AVERAGE
   LINE2:Kb_read@RRDIDX@#@COLOR@:@RRDPARAM@ read KB/s
   GPRINT:Kb_read@RRDIDX@:LAST: \: %8.1lf (cur)
   GPRINT:Kb_read@RRDIDX@:MAX: \: %8.1lf (max)
   GPRINT:Kb_read@RRDIDX@:MIN: \: %8.1lf (min)
   GPRINT:Kb_read@RRDIDX@:AVERAGE: \: %8.1lf (avg)\n

   DEF:Kb_wrtn2@RRDIDX@=@RRDFN@:Kb_wrtn:AVERAGE
   CDEF:Kb_wrtn@RRDIDX@=0,Kb_wrtn2@RRDIDX@,-
   LINE2:Kb_wrtn@RRDIDX@#@COLOR@:@RRDPARAM@ wrtn KB/s
   GPRINT:Kb_wrtn2@RRDIDX@:LAST: \: %8.1lf (cur)
   GPRINT:Kb_wrtn2@RRDIDX@:MAX: \: %8.1lf (max)
   GPRINT:Kb_wrtn2@RRDIDX@:MIN: \: %8.1lf (min)
   GPRINT:Kb_wrtn2@RRDIDX@:AVERAGE: \: %8.1lf (avg)\n

[iostat-part]
   TITLE partition read and write
   YAXIS KB/s
   FNPATTERN iostat-part.(.*).rrd
   DEF:Kb_read@RRDIDX@=@RRDFN@:Kb_read:AVERAGE
   LINE2:Kb_read@RRDIDX@#@COLOR@:@RRDPARAM@ read KB/s
   GPRINT:Kb_read@RRDIDX@:LAST: \: %5.1lf (cur)
   GPRINT:Kb_read@RRDIDX@:MAX: \: %5.1lf (max)
   GPRINT:Kb_read@RRDIDX@:MIN: \: %5.1lf (min)
   GPRINT:Kb_read@RRDIDX@:AVERAGE: \: %5.1lf (avg)\n
   DEF:Kb_wrtn2@RRDIDX@=@RRDFN@:Kb_wrtn:AVERAGE
   CDEF:Kb_wrtn@RRDIDX@=0,Kb_wrtn2@RRDIDX@,-
   LINE2:Kb_wrtn@RRDIDX@#@COLOR@:@RRDPARAM@ wrtn KB/s
   GPRINT:Kb_wrtn2@RRDIDX@:LAST: \: %5.1lf (cur)
   GPRINT:Kb_wrtn2@RRDIDX@:MAX: \: %5.1lf (max)
   GPRINT:Kb_wrtn2@RRDIDX@:MIN: \: %5.1lf (min)
   GPRINT:Kb_wrtn2@RRDIDX@:AVERAGE: \: %5.1lf (avg)\n
Writes are negative, reads are positive. Add this to the linux hosts in bb-hosts so the extra graphs show up on the trends page: 
TRENDS:*,disk:disk|iostat-disk|iostat-part