ElasticSearch CollectD plugin

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

Installation

1. Place elasticsearch_collectd.py in /opt/collectd/lib/collectd/plugins/python (assuming you have collectd installed to /opt/collectd).
2. Configure the plugin (see below).
3. Restart collectd.

Requirements

• collectd 4.9+
• ElasticSearch 1.x or newer.

Configuration

• See elasticsearch.conf
• The plugin will automatically determine the version of ElasticSearch you are running.
• Per-index and cluster stats can be disabled if needed; they are enabled by default.

Metrics

Node stats

• 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 commited, heap Used, non heap commited, 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)

Index stats

• Transaction log (size, number of operations)
• Most of the common stats per index and per primary vs. total.

Cluster stats

• Shard stats (active, initializing, relocating, unassigned, primaries)
• Nodes (total, data nodes)