Output filter plugin to rewrite Collectd JSON output to unroll into a flat json

Rewrites the message coming from Collectd to store as a flat json. Can be used in Elasticsearch to display metrics.

Use RubyGems: If you use td-agent

td-agent-gem install fluent-plugin-collectd-unroll

If you use fluentd

gem install fluent-plugin-collectd-unroll

<match pattern>
  type collectd_unroll
</match>

If the following record is passed:

[{"time" => 1000, "host" => 'host_v', "interval" => 5, "plugin" => 'plugin_v', "plugin_instance" => 'plugin_instance_v', "type" => 'type_v', "type_instance" => 'type_instance_v', "values" => ['v1', 'v2'], "dsnames" => ['n1', 'n2'], "dstypes" => ['t1', 't2']}]

then you get new record:

[{"n1"=>"v1", "n2"=>"v2"}]

and the field name will be changed to

host_v.plugin_v.plugin_instance_v.type_v.type_instance_v

Empty values in "plugin", "plugin_instance", "type" or "type_instance" will not be copied into the new tag name

• This plugin was written to deal with a specific use-case, might not be the best fit for everyone. If you need more configurability/features, create a PR