Installing Munin on a latest Centos 5 via WHM (cPanel) can be very painful (takes a long night googling for me.. lol). On my server (CENTOS Enterprise 5.2 x86_64) – under “Manage Plugin” menu on WHM, it shows : Can’t locate RRDs.pm.
First you have to install rrdtool, rrdtool-devel, and perl-rrdtool. Here’s how to install it (it works for me) :
wget http://dag.wieers.com/rpm/packages/rrdtool/perl-rrdtool-1.2.23-1.el5.rf.x86_64.rpm
wget http://dag.wieers.com/rpm/packages/rrdtool/rrdtool-devel-1.2.23-1.el5.rf.x86_64.rpm
wget http://dag.wieers.com/rpm/packages/rrdtool/rrdtool-1.2.23-1.el5.rf.x86_64.rpm
rpm -ivh rrdtool-1.2.23-1.el5.rf.x86_64.rpm rrdtool-devel-1.2.23-1.el5.rf.x86_64.rpm perl-rrdtool-1.2.23-1.el5.rf.x86_64.rpm
And now you’re ready to install Munin through WHM.
Web Development | Networking | System Administration 
thanks !!!!
Hey, thank you very much for this post.
I have a new server with centos 5.2 x86_64, and i was trying to get munin working. It was very helpful.
Hey,
just for the record, you have to do also:
mv /usr/local/cpanel/3rdparty/bin/rrdtool /usr/local/cpanel/3rdparty/bin/rrdtool.bak
/scripts/rrdtoolinstall –force
and after that, everything went fine!
thanks this fixed mine
Thanks alot man’.
just for anybody using 32 bit arch like me use these
wget http://dag.wieers.com/rpm/packages/rrdtool/perl-rrdtool-1.2.23-1.el5.rf.i386.rpm
wget http://dag.wieers.com/rpm/packages/rrdtool/rrdtool-devel-1.2.23-1.el5.rf.i386.rpm
wget http://dag.wieers.com/rpm/packages/rrdtool/rrdtool-1.2.23-1.el5.rf.i386.rpm
rpm -ivh rrdtool-1.2.23-1.el5.rf.i386.rpm rrdtool-devel-1.2.23-1.el5.rf.i386.rpm perl-rrdtool-1.2.23-1.el5.rf.i386.rpm