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  2 minute read.

Last Modified 2021-07-30 09:07 EDT

TrueNAS has a built in reporting engine that gives helpful graphs and information about the system.

TrueNAS uses Graphite for metric gathering and visualizations.

The options in System > Reporting control how the graphs in Reporting appear:

General Options

Report CPU usage in PercentReports CPU usage in percent instead of units of kernel time.
Graphite Separate InstancesSends the plugin instance and type instance to Graphite as separate path components: host.cpu.0.cpu.idle. Disabling sends the plugin and plugin instance as one path component and type and type instance as another: host.cpu-0.cpu-idle.
Remote Graphite Server HostnameRemote Graphite server Hostname or IP address.
Graph age in MonthsMaximum time (in months) TrueNAS stores a graph (allowed values are 1-60). Changing this value causes the Confirm RRD Destroy dialog to appear. Changes do not take effect until TrueNAS destroys the existing reporting database.
Number of Graph PointsThe number of points for each hourly, daily, weekly, monthly, or yearly graph (allowed values are 1-4096). Changing this value displays the Confirm RRD Destroy dialog. Changes do not take effect until TrueNAS destroys the existing reporting database.
ForceForces TruNAS to add the NTP server, even if it is unreachable.
Report history is cleared when Report CPU, Graph Age, or Graph Points are changed.

Reporting data is saved and preserved across system upgrades and reboots. This allows viewing usage trends over time. This data is frequently written and should not be stored on the boot pool or operating system device. Reporting data is saved in /var/db/collectd/rrd/.