--- a/elasticsearch.rst	Tue Oct 31 16:21:07 2017 +0200
+++ b/elasticsearch.rst	Sun Nov 12 13:45:43 2017 +0200
@@ -20,23 +20,34 @@
 Cluster health::
 
   GET /_cat/health?v
+  GET /_cluster/health?pretty
+  GET /_cluster/health?pretty&level=cluster
 
-List of nodes in cluster::
+List of nodes in cluster (ip, RAM, CPU)::
 
   GET /_cat/nodes?v
   GET /_cat/master?v
 
-List of indexes::
+List cluster state::
+
+  GET /_cluster/state?pretty
+
+List of indexes (status, health, size)::
 
   GET /_cat/indices
   GET /_cat/indices?v
   GET /_cat/indices?v&s=index
+  GET /_cluster/health?pretty&level=indices
 
 List of mappings across all indexes::
 
   GET /_mapping
   GET /_all/_mapping
 
+List of shards::
+
+  GET /_cluster/health?pretty&level=shards
+
 https://www.elastic.co/guide/en/elasticsearch/reference/current/_cluster_health.html
   Cluster Health.
 https://www.elastic.co/guide/en/elasticsearch/reference/current/_list_all_indices.html
@@ -47,6 +58,93 @@
 Managing indexes
 ================
 
+Assign number of shards and replicas::
+
+  curl -XPUT -d '{settings: {index: "number_of_shards": 3, "number_of_replicas": 1}}'
+
 https://www.elastic.co/guide/en/elasticsearch/reference/current/_delete_an_index.html
   Delete an Index.
+https://github.com/elastic/curator
+  Manage/archive indices.
+https://www.elastic.co/guide/en/elasticsearch/client/curator/current/about.html
+  Elasticsearch Curator helps you curate, or manage, your Elasticsearch indices and snapshots.
+https://www.elastic.co/guide/en/elasticsearch/client/curator/current/about-features.html
+  Curator allows for many different operations to be performed to both indices and snapshots.
 
+https://www.elastic.co/guide/en/elasticsearch/guide/current/retiring-data.html
+  Retiring Data.
+
+Lucene search syntax
+====================
+
+``TERM1 TERM2`` is same as ``TERM1 OR TERM2``.
+
+``"TERM1 TERM2"`` is for phrase.
+
+``"TERM1 TERM2"~5`` is for proximity.
+
+``TERM~0.8`` is for fuzzy.
+
+``*`` is for wildcard.
+
+Boosting is done with ``^N`` syntax, like ``TERM1^10 TERM2``.
+
+Range with ``[2017-01-01 TO 2017-02-29]``.
+
+Logical ``AND``, ``OR``, ``NOT`` and parentheses for grouping.
+
+Fields are set before colon, like ``FIELD:TERM``.
+
+https://www.elastic.co/guide/en/elasticsearch/reference/master/query-dsl-query-string-query.html
+  Query String Query
+https://www.elastic.co/guide/en/elasticsearch/reference/master/query-dsl-simple-query-string-query.html
+  Simple Query String Query
+
+Performance
+===========
+
+https://www.elastic.co/guide/en/elasticsearch/reference/5.5/search-profile.html
+  Profile API.
+https://www.elastic.co/guide/en/elasticsearch/reference/current/_explain_analyze.html
+  Explain Analyze.
+https://www.elastic.co/guide/en/elasticsearch/reference/current/search-explain.html
+  Explain API.
+
+https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-indexing-speed.html
+  Tune for indexing speed.
+https://www.elastic.co/guide/en/elasticsearch/reference/current/tune-for-search-speed.html
+  Tune for search speed.
+
+JSON search syntax
+==================
+
+https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-from-size.html
+  Search results pagination.
+https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html
+  Query String Query.
+https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations.html
+  Aggregation.
+https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-sort.html
+  Sort.
+
+Alerting
+========
+
+https://github.com/Yelp/elastalert
+  Easy & Flexible Alerting With Elasticsearch.
+http://elastalert.readthedocs.io/en/latest/elastalert.html
+  Easy & Flexible Alerting With Elasticsearch.
+https://github.com/sirensolutions/sentinl/wiki/SENTINL-Alerts-in-Dashboard
+  SENTINL Alerts in Dashboard.
+https://github.com/sirensolutions/sentinl/wiki/SENTINL-Config-Example
+  SENTINL Config Example
+https://github.com/sirensolutions/sentinl/wiki/SENTINL-Tutorial
+  SENTINL Tutorial
+https://github.com/sirensolutions/sentinl/wiki/SENTINL-Watcher-Anatomy
+  SENTINL Watcher Anatomy
+https://github.com/sirensolutions/sentinl/wiki/SENTINL-Watcher-Examples
+  SENTINL Watcher Examples
+
+https://sematext.com/blog/x-pack-alternatives/
+  X-Pack Alternatives
+