Chart-PerfData

This is generic a Chart widget to graph performance data.

Synopsis

{
    "type": "Nagios:Chart-PerfData",
    "title": "Memory",
    "topics":[
       "nagios/checks/localhost/Memory"
    ],
    "graphs": [
        {
            "name": "Memory",
            "unit": "B",
            "keys": [ "mem_used" ]
        },
        {
            "name": "Swap",
            "unit": "B",
            "keys": [ "swap_used" ]
        }
    ]
}

Parameters

The following parameters are supported:

title (optional)

A string which will be used as the title of the chart (default: Performance Data).

axis (optional)

An array of maps which formats the y axis.

topics

An array of MQTT topics this chart uses.

graphs

An array of one or two graphs to chart. Each graph is a map with the following parameters:

name (optional)

A string used as the name of the graph.

unit (optional)

A string used as the base unit of measuring for printing graph values.

keys

A map or array of performance data keys. The performance data values of multiple keys will be added. If keys is a map the map values are handled as factors for each key. This allows normalizing the values to their base unit of measuring or substract different keys from each other etc.