TO IDENTIFY ERROS WITH GRAPH, verify if:
service-perfdata file exist in Nagios “var” directory ( /var/local/nagios/
# ll /usr/local/nagios/var/service-perfdata
To find out where is inside centreon: Configuration>Nagios>Centreon>Central>”Perfdata file”
“RRDtool is the OpenSource industry standard, high performance data logging and graphing system for time series data. Use it to write your custom monitoring shell scripts or create whole applications using its Perl, Python, Ruby, TCL or PHP bindings”
RRD = Round Robin Database Tool, this means the size of the DB does not keep growing!
I just rewrote a simplified the tutuorial, and wrote as I was learning how to use RRD. THe idea is to learn how to create custom graphs in Nagios and Centreon.