NAME

       event2vrule - adds 'events' to rrdtool graphs

SYNOPSIS

       event2vrule <params>

DESCRIPTION

       Adding Events to Graphs

       There  is  a  new  graphing  feature  which  allows  you  to specify events that should be
       displayed in your graphs. These events are simply a  list  of  points  in  time  at  which
       something of interest occurred.

       For instance, one could create a plain text file in the graphs directory called events.txt
       containing these lines:

         2001/02/10 1538 added support for events to FlowScan graphs
         2001/02/12 1601 allowed the events file to be named on make command line

       Then to generate the graphs with those events included one might run:

         $ make -f graphs.mf events=events.txt

       This feature was implemented using a new script called event2vrule that is  supplied  with
       FlowScan.  This  script  is  meant  to  be  used  as a ``wrapper'' for running rrdtool(1),
       similarly to how one might run nohup(1). E.g.:

         $ event2vrule -h 48 events.txt rrdtool graph -s -48h ...

       That command will cause these VRULE arguments to be passed to rrdtool, at the end  of  the
       argument list:

         COMMENT:\n
         VRULE:981841080#ff0000:2001/02/10 1538 added support for events to FlowScan graphs
         COMMENT:\n
         VRULE:982015260#ff0000:2001/02/12  1601  allowed  the  events  file  to be named on make
       command line
         COMMENT:\n

SEE ALSO

       add_ds.pl(1), add_txrx(1), flowscan(1), ip2hostname(1), locker(1)

AUTHOR

       This manual page was written by Anibal Monsalve Salazar, for the Debian Project.

                                                                                   EVENT2VRULE(1)