python reamde update: elasticsearch

diff --git a/python.d/README.md b/python.d/README.md
index c3209f2dc6cbd7f0af98c2e20ceb1682997b2b05..75f5614a7b20bb0c9f0e06078086553152ad4295 100644 (file)
--- a/python.d/README.md
+++ b/python.d/README.md
@@ -303,6 +303,67 @@ If no configuration is given, module will attempt to connect to dovecot using un
 
 ---
 
+# elasticsearch
+
+Module monitor 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, commited
+ * 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'   # Server ip address or hostname
+  port               : 'password'     # Port on which elasticsearch listed
+  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.
+
+---
+
 # exim
 
 Simple module executing `exim -bpc` to grab exim queue.