Any error messages inside the log files? For instance under ~/var/pnp4nagios/log/npcd.log or ~/var/log/rrdcached.log.
Also the nagios core log can be helpful.
Any error messages inside the log files? For instance under ~/var/pnp4nagios/log/npcd.log or ~/var/log/rrdcached.log.
Also the nagios core log can be helpful.