I have been working on this for a few hours now, and haven't yet been able to get munin to output the html files/generated graphs of resource usage on my CentOS 5.3 server.

Here are some things I run as the munin user, and the results:

/usr/share/munin/munin-update --nofork --debug

(above works fine, takes ~2.4 seconds to complete)

munin-run cpu

(And other options/plugins (besides 'cpu'), all work fine and give desired output)

munin-cron

Fails with:

[FATAL] There is nothing to do here, since there are no nodes with any plugins.  Please refer to http://munin-monitoring.org/wiki/FAQ_no_graphs at /usr/share/munin/munin-html line 38

I am wondering if, perhaps, the settings in my munin.conf file might be causing a problem. Here's the contents of that file (below):

bdir   /var/lib/munin/
htmldir /home/archdev/public_html/monitoring
logdir  /var/log/munin
rundir  /var/run/munin/
tmpldir /etc/munin/templates

[archstl.archstl.org]
        address 127.0.0.1
        use_node_name yes

Also, when I run the telnet localhost 4949 command, and list the node's plugins, it returns the default munin list... something seems to be wrong with the munin html creation process. :(