nfsen安装碰到如下问题：

一：错误提示

Can't locate RRDs.pm in @INC (@INC contains:./libexec ./installer-items
> /etc/perl /usr/local/lib/perl/5.10.1/usr/local/share/perl/5.10.1
> /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10/usr/share/perl/5.10
> /usr/local/lib/site_perl .) at libexec/NfSenRRD.pmline 38.
> BEGIN Failed--compilation aborted atlibexec/NfSenRRD.pm line 38.
> Compilation Failed in require at libexec/NfSen.pmline 43.
> BEGIN Failed--compilation aborted atlibexec/NfSen.pm line 43.
> Compilation Failed in require at ./install.pl line44.
> BEGIN Failed--compilation aborted at ./install.plline 44.

解决方法：

这是由于环境安装不完整导致的  

安装perl-rrdtool、rrdtool、rrdtool-devel、perl-MailTools

二、错误提示

Unable to create graph: No such file or directory
Error GenGraph: Profile: live,traffic-day: Legend set but nocolor:

解决方法：

在nfsen.conf文件里，把 peer1、peer2 两项后面都加上'col'参数

  'peer1'    => { 'port' => '9901','col'=> '#cc0000','type' => 'netflow'},);