Hi, I have installed Xymon server on a CentOS 6 x64. I wanted to integrate MRTG into it and i got an error. After i add the below lines:

For Xymon integration

WorkDir: /var/lib/xymon/rrd LogFormat: rrdtool

I get this error:

ERROR: could not find RRDs.pm. Use LibAdd: in mrtg.cfg to help mrtg find RRDs.pm

The problem is that i don't know where to find RRDs.pm. Regards.