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       hobbitgraph.cfg - Configuration of the hobbitgraph CGI




       hobbitgraph.cgi(1)        uses       the       configuration       file
       $BBHOME/etc/hobbitgraph.cfg  to  build  graphs  from  the   RRD   files
       collected by Xymon.


       Each  definition  of  a graph type begins with a "[SERVICE]" indicator,
       this   is   the   name   passed   as   the   "service"   parameter   to
       hobbitgraph.cgi(1).   If  the service name passed to hobbitgraph.cgi is
       not found, it will attempt to match the service name to a graph via the
       TEST2RRD   environment   variable.   So  calling  hobbitgraph.cgi  with
       "service=cpu" or "service=la" will end up producing the same graph.

       A graph definition needs to have a TITLE and a YAXIS setting. These are
       texts  shown  as  the  title  of  the  graph,  and  the  YAXIS  heading
       respectively.  (The X-axis is always time-based).

       If a fixed set of RRD files are used for  the  graph,  you  just  write
       those  in  the RRDtool definitions. Note that Xymon keeps all RRD files
       for a host in a separate directory per host,  so  you  need  not  worry
       about the hostname being part of the RRD filename.

       For graphs that use multiple RRD files as input, you specify a filename
       pattern in the FNPATTERN statement, and optionally a pattern  of  files
       to  exclude  from  the  graph  with  EXFNPATTERN  (see  "[tcp]"  for an
       example).  When FNPATTERN is used, you can use "@RRDFN@" in the RRDtool
       definitions  to pick up each filename. "@RRDIDX@" is an index (starting
       at 0) for each file in the set. "@RRDPARAM@" contains  the  first  word
       extracted  from  the  pattern of files (see e.g. "[memory]" how this is
       used). "@COLOR@" picks a new color for each graph automatically.

       The remainder of the lines in each definition are  passed  directly  to
       the RRDtool rrd_graph() routine.

       The  following  is  an  example of how the "la" (cpu) graph is defined.
       This is a simple definition that uses a single RRD-file, la.rrd:

               TITLE CPU Load
               YAXIS Load
               AREA:la#00CC00:CPU Load Average
               GPRINT:la:LAST:  %5.1lf (cur)
               GPRINT:la:MAX:  %5.1lf (max)
               GPRINT:la:MIN:  %5.1lf (min)
               GPRINT:la:AVERAGE:  %5.1lf (avg)

       Here is an example of a graph that uses multiple RRD-files,  determined
       automatically  at  run-time via the FNPATTERN setting. Note how it uses
       the @RRDIDX@ to define a unique RRD parameter per input-file,  and  the
       @COLOR@  and @RRDPARAM@ items to pick unique colors and a matching text
       for the graph legend:

               FNPATTERN disk(.*).rrd
               TITLE Disk Utilization
               YAXIS % Full
               -u 100
               -l 0
               GPRINT:p@RRDIDX@:LAST:  %5.1lf (cur)
               GPRINT:p@RRDIDX@:MAX:  %5.1lf (max)
               GPRINT:p@RRDIDX@:MIN:  %5.1lf (min)
               GPRINT:p@RRDIDX@:AVERAGE:  %5.1lf (avg)


       Normally the title  of  a  graph  is  a  static  text  defined  in  the
       hobbitgraph.cfg  file.  However, there may be situations where you want
       to use different titles for the same type of graph, e.g.   if  you  are
       incorporating  RRD  files  from  MRTG  into Xymon. In that case you can
       setup the TITLE definition so that it runs a custom script to determine
       the graph title. Like this:

            TITLE exec:/usr/local/bin/graphitle

       The /usr/local/bin/graphtitle command is then called with the hostname,
       the graphtype, the period string, and all of  the  RRD  files  used  as
       parameters.  The script must generate one line of output, which is then
       used as the title of the graph.


       TEST2RRD Maps service names to graph definitions.


       Most of the RRD graph definitions shipped with Xymon have  been  ported
       from the definitions in the larrd-grapher.cgi CGI from LARRD 0.43c.


       hobbitserver.cfg(5), rrdtool(1), rrdgraph(1)