On a configuration run, the plugin is called with the argument “config”. The following fields are used.
|graph_title||string||required||Sets the title of the graph|
|graph_args||string||optional||Arguments for the rrd grapher. This is used to control how the generated graph looks, and how values are interpreted or presented.||rrdgraph|
|graph_vlabel||string||optional||Label for the vertical axis of the graph|
|graph_category||lower case string, no whitespace||optional||Category used to sort the graph on the generated index web page.||misc|
|graph_info||html text||optional||Additional text for the generated graph web page|
|graph_scale||yes|no||optional||If “yes”, the generated graph will be scaled to the upper and lower values of the datapoints within the graph.||no|
|graph_order||space separated list of graph.datapoints||optional||
Ensures that the listed datapoints are displayed in order. Any additional datapoints are added in the order of appearance after datapoitns appearing on this list.
This field is also used for “borrowing”, which is the practice of taking datapoints from other graphs.
Sets the update_rate used by the munin master when it creates the RRD file.
The update rate is the interval at which the RRD file expects to have data.
This field requires a munin master version of at least 2.0.0
|datapoint.label||lower case string, no whitespace||required||The label used in the graph for this field|
|datapoint.info||html text||optional||Additional html text for the generated graph web page, used in the field description table|
|datapoint.warning||integer, or integer:integer (signed)||optional||This field defines a threshold value or range. If the field value above the defined warning value, or outside the range, the service is considered to be in a “warning” state.|
|datapoint.critical||integer, or integer:integer (signed)||optional||This field defines a threshold value or range. If the field value is above the defined critical value, or outside the range, the service is considered to be in a “critical” state.|
|datapoint.graph||yes|no||optional||Determines if this datapoint should be visible in the generated graph.||yes|
A CDEF statement is a Reverse Polish Notation statement used to construct a datapoint from other datapoints.
This is commonly used to calculate percentages.
|datapoint.draw||AREA, LINE, LINE[n], STACK, AREASTACK, LINESTACK, LINE[n]STACK||Determines how the graph datapoints are displayed in the graph. The “LINE” takes an optional width suffix, commonly “LINE1”, “LINE2”, etc… The *STACK values are specific to munin and makes the first a LINE, LINE[n] or AREA datasource, and the rest as STACK.||rrdgraph||LINE|
On a data fetch run, the plugin is called with no arguments. the following fields are used.
|datapoint.value||integer, scientific notation, or “U” (may be signed)||required||The value to be graphed.||No default|
This is an example of the plugin fields used with the “df” plugin. The “munin-run” command is used to run the plugin from the command line.
# munin-run df config graph_title Filesystem usage (in %) graph_args --upper-limit 100 -l 0 graph_vlabel % graph_category disk graph_info This graph shows disk usage on the machine. _dev_hda1.label / _dev_hda1.info / (ext3) -> /dev/hda1 _dev_hda1.warning 92 _dev_hda1.critical 98
Data fetch run¶
# munin-run df _dev_hda1.value 83