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# elasticsearch
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
### configuration
Sample:
```yaml
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.
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