I have already written a step-by-step howto here But this one is for CentOS,Fedora,RedHat and the new version of NagVis 1.4.4 released on 2009-10-15. Requiriments: Add grpahviz repo # vim /etc/yum.repos.d/graphviz.repo [graphviz-stable] name=Graphviz – RHEL $releasever – $basearch baseurl=http://www.graphviz.org/pub/graphviz/stable/redhat/el$releasever/$basearch/os/ enabled=1 […]