:plugin: collectd
:type: codec

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:version: %VERSION%
:release_date: %RELEASE_DATE%
:changelog_url: %CHANGELOG_URL%
:include_path: ../../../../logstash/docs/include
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[id="plugins-{type}s-{plugin}"]

=== Collectd codec plugin

include::{include_path}/plugin_header.asciidoc[]

==== Description

Read events from the collectd binary protocol over the network via udp.
See https://collectd.org/wiki/index.php/Binary_protocol

Configuration in your Logstash configuration file can be as simple as:
[source,ruby]
    input {
      udp {
        port => 25826
        buffer_size => 1452
        codec => collectd { }
      }
    }

A sample `collectd.conf` to send to Logstash might be:
[source,xml]
    Hostname    "host.example.com"
    LoadPlugin interface
    LoadPlugin load
    LoadPlugin memory
    LoadPlugin network
    <Plugin interface>
        Interface "eth0"
        IgnoreSelected false
    </Plugin>
    <Plugin network>
        <Server "10.0.0.1" "25826">
        </Server>
    </Plugin>

Be sure to replace `10.0.0.1` with the IP of your Logstash instance.


[id="plugins-{type}s-{plugin}-options"]
==== Collectd Codec Configuration Options

[cols="<,<,<",options="header",]
|=======================================================================
|Setting |Input type|Required
| <<plugins-{type}s-{plugin}-authfile>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-nan_handling>> |<<string,string>>, one of `["change_value", "warn", "drop"]`|No
| <<plugins-{type}s-{plugin}-nan_tag>> |<<string,string>>|No
| <<plugins-{type}s-{plugin}-nan_value>> |<<number,number>>|No
| <<plugins-{type}s-{plugin}-prune_intervals>> |<<boolean,boolean>>|No
| <<plugins-{type}s-{plugin}-security_level>> |<<string,string>>, one of `["None", "Sign", "Encrypt"]`|No
| <<plugins-{type}s-{plugin}-typesdb>> |<<array,array>>|No
|=======================================================================

&nbsp;

[id="plugins-{type}s-{plugin}-authfile"]
===== `authfile` 

  * Value type is <<string,string>>
  * There is no default value for this setting.

Path to the authentication file. This file should have the same format as
the http://collectd.org/documentation/manpages/collectd.conf.5.shtml#authfile_filename[AuthFile]
in collectd. You only need to set this option if the `security_level` is set to
`Sign` or `Encrypt`

[id="plugins-{type}s-{plugin}-nan_handling"]
===== `nan_handling` 

  * Value can be any of: `change_value`, `warn`, `drop`
  * Default value is `"change_value"`

What to do when a value in the event is `NaN` (Not a Number)

- change_value (default): Change the `NaN` to the value of the nan_value option and add `nan_tag` as a tag
- warn: Change the `NaN` to the value of the nan_value option, print a warning to the log and add `nan_tag` as a tag
- drop: Drop the event containing the `NaN` (this only drops the single event, not the whole packet)

[id="plugins-{type}s-{plugin}-nan_tag"]
===== `nan_tag` 

  * Value type is <<string,string>>
  * Default value is `"_collectdNaN"`

The tag to add to the event if a `NaN` value was found
Set this to an empty string ('') if you don't want to tag

[id="plugins-{type}s-{plugin}-nan_value"]
===== `nan_value` 

  * Value type is <<number,number>>
  * Default value is `0`

Only relevant when `nan_handeling` is set to `change_value`
Change NaN to this configured value

[id="plugins-{type}s-{plugin}-prune_intervals"]
===== `prune_intervals` 

  * Value type is <<boolean,boolean>>
  * Default value is `true`

Prune interval records.  Defaults to `true`.

[id="plugins-{type}s-{plugin}-security_level"]
===== `security_level` 

  * Value can be any of: `None`, `Sign`, `Encrypt`
  * Default value is `"None"`

Security Level. Default is `None`. This setting mirrors the setting from the
collectd https://collectd.org/wiki/index.php/Plugin:Network[Network plugin]

[id="plugins-{type}s-{plugin}-typesdb"]
===== `typesdb` 

  * Value type is <<array,array>>
  * There is no default value for this setting.

File path(s) to collectd `types.db` to use.
The last matching pattern wins if you have identical pattern names in multiple files.
If no types.db is provided the included `types.db` will be used (currently 5.4.0).