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This module monitors Elasticsearch performance and health metrics.

It produces:

  1. Search performance charts:
    * Number of queries, fetches
    * Time spent on queries, fetches
    * Query and fetch latency

  2. Indexing performance charts:
    * Number of documents indexed, index refreshes, flushes
    * Time spent on indexing, refreshing, flushing
    * Indexing and flushing latency

  3. Memory usage and garbace collection charts:
    * JVM heap currently in use, committed
    * Count of garbage collections
    * Time spent on garbage collections

  4. Host metrics charts:
    * Available file descriptors in percent
    * Opened HTTP connections
    * Cluster communication transport metrics

  5. Queues and rejections charts:
    * Number of queued/rejected threads in thread pool

  6. Fielddata cache charts:
    * Fielddata cache size
    * Fielddata evictions and circuit breaker tripped count

  7. Cluster health API charts:
    * Cluster status
    * Nodes and tasks statistics
    * Shards statistics

  8. Cluster stats API charts:
    * Nodes statistics
    * Query cache statistics
    * Docs statistics
    * Store statistics
    * Indices and shards statistics



  host               : 'ipaddress'    # Elasticsearch server ip address or hostname
  port               : 'port'         # Port on which elasticsearch listens
  cluster_health     :  True/False    # Calls to cluster health elasticsearch API. Enabled by default.
  cluster_stats      :  True/False    # Calls to cluster stats elasticsearch API. Enabled by default.

If no configuration is given, module will fail to run.