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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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