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

Sample:

local:
  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.