fluent-plugin-netflow-multipler

Overview

Fluentd filter plugin to multiply sampled netflow counters by sampling rate.

Netflow exporters usually export netflow data after sampling with specific rate and collectors need to multiply the data by the sampling rate to estimate actual values. This netflow filter plugin finds counters and sampling rate field in each netflow and calculate into other counter fields. Default or exporter-specific sampling rate will be used if no sampling rate found in netflow data.

NOTE

Netflow v10 (a.k.a. IPFIX) is not tested.

Installation

Use td-agent-gem or fluent-gem:

$ td-agent-gem install fluent-plugin-netflow-multiplier
$ fluent-gem install fluent-plugin-netflow-multiplier

Or you can use native gem as well:

$ gem install fluent-plugin-netflow-multiplier

Configuration

This is an example to configure this plugin in conjunction with fluent-plugin-netflow as input plugin, and stdout as output plugin.

<source>
  @type netflow
  bind 0.0.0.0
  port 2055
  tag  netflow.event
</source>

<filter netflow.event>
  @type netflow_multiplier
  default_sampling_rate 10000
</filter>

<match netflow.event>
  @type stdout
</match>

Parameters

default_sampling_rate

Default sampling rate.
(Default: 1)

sampling_rate_per_host

Path to sampling rate definition file which describe per-host rates. The definition file should be in YAML like this.
(Default: nil)

record_suffix

Field suffix for mutiplied values. This plugin calculates the values from original fields and stores into other fields appended the suffix. (eg: in_bytes into in_bytes_estimated)
(Default: '_estimated')

Contributing