MRTG-RRD(1)                          mrtg                          MRTG-RRD(1)

N?NA?AM?ME?E

       mrtg-rrd - How to use RRDtool with MRTG

S?SY?YN?NO?OP?PS?SI?IS?S

       After using MRTG for some time you may find some limitations, mostly in

       the areas of performance and graphing flexibility. These are exactly

       the areas addressed by RRDtool. To learn more about RRDtool check out

       its website on

        http://oss.oetiker.ch/rrdtool

R?RR?RD?DT?TO?OO?OL?L I?IN?NT?TE?EG?GR?RA?AT?TI?IO?ON?N

       When using mrtg with RRDtool you are replacing _?r_?a_?t_?e_?u_?p with the RRDtool

       perl module _?R_?R_?D_?s_?._?p_?m. To enable RRDtool support in mrtg you have to add

       the line

        LogFormat: rrdtool

       to your mrtg config file.

       MRTG needs access to both the RRDtool perl module R?RR?RD?Ds?s.?.p?pm?m and to the

       r?rr?rd?dt?to?oo?ol?l executable.

       If these two items are not installed in locations where perl can find

       them on its own, then you can use the following two parameters to

       supply the appropriate directories.

       For the location of the r?rr?rd?dt?to?oo?ol?l executable you put

        PathAdd: /usr/local/rrdtool/bin/

       or

        PathAdd: c:\rrdtool\bin

       For the location of the perl module it would be:

        LibAdd: /usr/local/rrdtool/lib/perl/

       or

        LibAdd: c:\rrdtool\bin\lib\perl

       When you have made this modification to the configuration file, several

       things will happen when you run mrtg again with the new config file:

       1.  mrtg will take all your old ".log" files and c?co?on?nv?ve?er?rt?t them to ".rrd"

           format. (The ".log" files don't get touched in the process, so if

           things don't work out they are still there.)

       2.  mrtg will use r?rr?rd?dt?to?oo?ol?l to update its databases. These will have a

           new format called _?r_?r_?d which is totally different than the native

           _?l_?o_?g format of the classic mrtg.

       3.  mrtg will n?no?ot?t create any webpages of graphs anymore.  It will only

           query the routers for traffic information and update its _?r_?r_?d

           databases.

       The advantage of whole thing is that the mrtg will become m?mu?uc?ch?h faster.

       Expect the runtime to drop to 20% of the previous value. (I would like

       to get some feedback on this from folks with large installations.)

       Mind you, though, while the logging process of RRDtool is v?ve?er?ry?y fast,

       you are also gaining some time by neither creating graphs nor updating

       webpages.  The idea behind this is that it is more efficient to create

       graphs and webpages on demand by using a cgi script.

       At the moment there is no o?of?ff?fi?ic?ci?ia?al?l script to do this, but two

       contributers have created such scripts:

       One4All aka 14all.cgi

           This was the first program to take over the webpage creation and

           graphing task.  It has been developed by Rainer Bawidamann

           rainer.bawidamann@web.de. You can find a copy on Rainers website:

           http://my14all.sourceforge.net/ The program comes with its own

           documentation

       r?ro?ou?ut?te?er?rs?s2?2.?.c?cg?gi?i

           This is another CGI frontend for mrtg running with rrdtool. The

           main difference between this and 14all is that the web pages it

           creates are much more stylish than the ones from mrtg, plus they

           support User Defined summary graphs and different levels of

           Authentication and Authorisation. This has been written by Steve

           Shipway (steve@steveshipway.org). You obtain a copy, and find a

           forum and demonstration system at

           http://www.steveshipway.org/software/ The program comes with its

           own installation instructions and install script.

       m?mr?rt?tg?g-?-r?rr?rd?d

           The mrtg-rrd script is a CGI/FastCGI application by Jan "Yenya"

           Kasprzak for displaying MRTG graphs from data in the RRDtool

           format. It is an intended replacement for the 14all.cgi script. It

           can make your monitoring system faster because MRTG does not have

           to generate all the PNG files with graphs every 5 minutes or so.

           Instead of this the graphs are generated on-demand when the user

           wants to see them. http://www.fi.muni.cz/~kas/mrtg-rrd/

F?FU?UT?TU?UR?RE?E

       Just as a side note: MRTG-3 will be based entirely on rrdtool

       technology.  But don't wait for it ... get going n?no?ow?w!

A?AU?UT?TH?HO?OR?R

       Tobias Oetiker <tobi@oetiker.ch>

2.17.7                            2018-07-13                       MRTG-RRD(1)