Graphite datasource for Network Weathermap

Simple plugin for network-weathermap that adds the ability to source information from Graphite.

Install to lib/datasources.

Usage

TARGET graphite:graphite_host:metric
TARGET graphite:graphite_host:metric_in:metric_out

The graphite_host can be specified as IP address or hostname. Port number can also be included. Example: localhost:8080

You can also specify - for either metric name, which tells Weathermap to ignore this metric for the purposes of the input or output value. This is mainly useful in combination with the aggregation feature, where you can take the input data from one target, and the output data from another.

The metric name can also include functions like perSecond or seriesByTag. If You need to add special characters in the metric name such as : or a space, it is better to URL encode it.

The default step is 60 seconds. If the series in Graphite have a different step, use graphite_step hint at map, node or link level. Use for example SET graphite_step 300 if the time per point is 5 minutes.

Examples

Basic example:

TARGET graphite:graphite.example.com:8080:devices.router1.snmp.if_otctets-eth0.rx:devices.router1.snmp.if_otctets-eth0.tx

Target with 1 metric can be used for example on NODE:

TARGET graphite:graphite.example.com:8080:devices.router1.cpu.usage

Get tagged series:

TARGET graphite:graphite.example.com:8080:seriesByTag('name=snmp.in_octets.rx','hostname=router1','ifName=eth0'):seriesByTag('name=snmp.out_octets.tx','hostname=router1','ifName=eth0')

Series which are a counter can use perSecond (2 different ways):

TARGET graphite:graphite.example.com:8080:perSecond(devices.router1.interfaces.eth0.in_octets):devices.router1.interfaces.eth0.out_octets|perSecond()

Targets with space or other special characters should be URL encoded:

TARGET graphite:graphite.example.com:8080:seriesByTag%28%27host%3Drouter1%27%2C%20%27entPhysicalName%3DCPU%201%27%2C%20%27name%3Dsnmp.cpu_usage%27%29

Which resolves in the following series target: seriesByTag('host=router1', 'entPhysicalName=CPU 1', 'name=snmp.cpu_usage').

Advanced example with special tokens:

NODE DEFAULT
    LABEL {node:this:name}
    SET metric cpu
    TARGET graphite:graphite.example.com:8080:devices.{node:this:name}.{node:this:metric}.usage

NODE router1
    POSITION 200 200

NODE router2
    POSITION 500 200
    SET metric mem

Which resolves in the following series targets: devices.router1.cpu.usage and devices.router2.mem.usage.