Munin plugin for elasticsearch

A Munin plugin for monitoring Elasticsearch nodes. Written in Ruby, depends on JSON gem. Compatible with Elasticsearch 5.x–7.x.

Supported Modes

Cache

elasticsearch_cache - field and query cache stats

Docs

elasticsearch_docs - document count

Garbage Collection

elasticsearch_gc - GC collections/sec

Garbage Collection Running Time

elasticsearch_gc_time - GC collection running time in ms

JVM Heap

elasticsearch_jvm - JVM heap stats

Operations

elasticsearch_ops - index, get, search, delete operations/sec

Store

elasticsearch_store - Size of index on disk

Installation

See the Munin documentation for complete instructions on plugin usage. In short, once elasticsearch_ is in your plugin directory, create symlinks for each desired mode in your Munin service dir (usually /etc/munin/plugins/). For example, to enable JVM monitoring:

ln -s /usr/local/munin/lib/plugins/elasticsearch_ /etc/munin/plugins/elasticsearch_jvm

Configuration

You may also need to create a configuration file for the plugin, if the included defaults aren't suitable to your environment. Usually this would be /etc/munin/plugin-conf.d/elasticsearch.

Variables

• host - a elasticsearch node capable of providing stats interface (default localhost)
• port - elasticsearch HTTP API port (default 9200)
• node - the name of the node to monitor (default _local)
• user - if HTTP authentication is required, user name
• pass - if HTTP authentication is required, user password

Example Config

[elasticsearch_*]
env.host 10.1.2.14
env.port 9200
env.node pinky rat
env.user johnsmith
env.user passw0rd

License

See the included LICENSE for rights and limitations under the terms of the MIT license.