Elasticsearch CollectD plugin

A CollectD plugin to collect Elasticsearch stats and metrics. Uses CollectD's Python plugin.

Installation

Place the elasticsearch_collectd.py file into a directory on the host. The recommended directory is /usr/share/collectd/collectd-elasticsearch.
Configure the plugin (see below).
Restart collectd.

See elasticsearch.conf
The plugin will automatically determine the version of Elasticsearch you are running as well as the cluster name.
Per-index and cluster stats can be disabled if needed; they are enabled by default. These settings are collected only on master eligible nodes.
If you are running the Elasticsearch plugin via a collectd deployment within a container, please configure the Host and Port values inside of the 20-elasticsearch.conf file that correspond to the desired Elasticsearch instance.

ex:

   <Module "elasticsearch_collectd">
       Host "XXX.XXX.XXX.XXX"
       Port "XXXX"
   </Module>

Documents (total docs & deleted docs)
Store size
Indexing (total, time, total delete, delete time)
Get (total, time, exists total, exists time, missing total, missing time)
Search (total query, total time, total fetch, total fetch time)
JVM uptime
JVM memory (heap committed, heap Used, non heap committed, non heap used)
JVM threads (count & peak)
JVM GC (time & count)
Transport stats (server open, RX count, RX size, TX count, TX size)
HTTP stats (current open & total open)
OS stats (CPU percent, file descriptors)
Thread pool stats (generic, index, get, snapshot, merge, optimize, bulk, warmer, flush, search, refresh)
Cache (field eviction, field size, filter evictions, filter size)
JVM collectors
FLush (total count, total time)
Merges (current count, current docs, current size, merge total size, docs a time)
Refresh (Total & Time)