- Elasticsearch Guide: other versions:
- Getting Started
- Setup
- Breaking changes
- Breaking changes in 2.3
- Breaking changes in 2.2
- Breaking changes in 2.1
- Breaking changes in 2.0
- Removed features
- Network changes
- Multiple
path.data
striping - Mapping changes
- CRUD and routing changes
- Query DSL changes
- Search changes
- Aggregation changes
- Parent/Child changes
- Scripting changes
- Index API changes
- Snapshot and Restore changes
- Plugin and packaging changes
- Setting changes
- Stats, info, and
cat
changes - Java API changes
- API Conventions
- Document APIs
- Search APIs
- Aggregations
- Metrics Aggregations
- Avg Aggregation
- Cardinality Aggregation
- Extended Stats Aggregation
- Geo Bounds Aggregation
- Geo Centroid Aggregation
- Max Aggregation
- Min Aggregation
- Percentiles Aggregation
- Percentile Ranks Aggregation
- Scripted Metric Aggregation
- Stats Aggregation
- Sum Aggregation
- Top hits Aggregation
- Value Count Aggregation
- Bucket Aggregations
- Children Aggregation
- Date Histogram Aggregation
- Date Range Aggregation
- Filter Aggregation
- Filters Aggregation
- Geo Distance Aggregation
- GeoHash grid Aggregation
- Global Aggregation
- Histogram Aggregation
- IPv4 Range Aggregation
- Missing Aggregation
- Nested Aggregation
- Range Aggregation
- Reverse nested Aggregation
- Sampler Aggregation
- Significant Terms Aggregation
- Terms Aggregation
- Pipeline Aggregations
- Avg Bucket Aggregation
- Derivative Aggregation
- Max Bucket Aggregation
- Min Bucket Aggregation
- Sum Bucket Aggregation
- Stats Bucket Aggregation
- Extended Stats Bucket Aggregation
- Percentiles Bucket Aggregation
- Moving Average Aggregation
- Cumulative Sum Aggregation
- Bucket Script Aggregation
- Bucket Selector Aggregation
- Serial Differencing Aggregation
- Caching heavy aggregations
- Returning only aggregation results
- Aggregation Metadata
- Metrics Aggregations
- Indices APIs
- Create Index
- Delete Index
- Get Index
- Indices Exists
- Open / Close Index API
- Put Mapping
- Get Mapping
- Get Field Mapping
- Types Exists
- Index Aliases
- Update Indices Settings
- Get Settings
- Analyze
- Index Templates
- Warmers
- Shadow replica indices
- Indices Stats
- Indices Segments
- Indices Recovery
- Indices Shard Stores
- Clear Cache
- Flush
- Refresh
- Force Merge
- Optimize
- Upgrade
- cat APIs
- Cluster APIs
- Query DSL
- Mapping
- Field datatypes
- Meta-Fields
- Mapping parameters
analyzer
boost
coerce
copy_to
doc_values
dynamic
enabled
fielddata
format
geohash
geohash_precision
geohash_prefix
ignore_above
ignore_malformed
include_in_all
index
index_options
lat_lon
fields
norms
null_value
position_increment_gap
precision_step
properties
search_analyzer
similarity
store
term_vector
- Dynamic Mapping
- Transform
- Analysis
- Analyzers
- Tokenizers
- Token Filters
- Standard Token Filter
- ASCII Folding Token Filter
- Length Token Filter
- Lowercase Token Filter
- Uppercase Token Filter
- NGram Token Filter
- Edge NGram Token Filter
- Porter Stem Token Filter
- Shingle Token Filter
- Stop Token Filter
- Word Delimiter Token Filter
- Stemmer Token Filter
- Stemmer Override Token Filter
- Keyword Marker Token Filter
- Keyword Repeat Token Filter
- KStem Token Filter
- Snowball Token Filter
- Phonetic Token Filter
- Synonym Token Filter
- Compound Word Token Filter
- Reverse Token Filter
- Elision Token Filter
- Truncate Token Filter
- Unique Token Filter
- Pattern Capture Token Filter
- Pattern Replace Token Filter
- Trim Token Filter
- Limit Token Count Token Filter
- Hunspell Token Filter
- Common Grams Token Filter
- Normalization Token Filter
- CJK Width Token Filter
- CJK Bigram Token Filter
- Delimited Payload Token Filter
- Keep Words Token Filter
- Keep Types Token Filter
- Classic Token Filter
- Apostrophe Token Filter
- Decimal Digit Token Filter
- Character Filters
- Modules
- Index Modules
- Testing
- Glossary of terms
- Release Notes
- 2.3.5 Release Notes
- 2.3.4 Release Notes
- 2.3.3 Release Notes
- 2.3.2 Release Notes
- 2.3.1 Release Notes
- 2.3.0 Release Notes
- 2.2.2 Release Notes
- 2.2.1 Release Notes
- 2.2.0 Release Notes
- 2.1.2 Release Notes
- 2.1.1 Release Notes
- 2.1.0 Release Notes
- 2.0.2 Release Notes
- 2.0.1 Release Notes
- 2.0.0 Release Notes
- 2.0.0-rc1 Release Notes
- 2.0.0-beta2 Release Notes
- 2.0.0-beta1 Release Notes
WARNING: Version 2.3 of Elasticsearch has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
Nodes Info
editNodes Info
editThe cluster nodes info API allows to retrieve one or more (or all) of the cluster nodes information.
curl -XGET 'http://localhost:9200/_nodes' curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2'
The first command retrieves information of all the nodes in the cluster.
The second command selectively retrieves nodes information of only
nodeId1
and nodeId2
. All the nodes selective options are explained
here.
By default, it just returns all attributes and core settings for a node.
It also allows to get only information on settings
, os
, process
, jvm
,
thread_pool
, transport
, http
and plugins
:
curl -XGET 'http://localhost:9200/_nodes/process' curl -XGET 'http://localhost:9200/_nodes/_all/process' curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/jvm,process' # same as above curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/info/jvm,process' curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/_all
The _all
flag can be set to return all the information - or you can simply omit it.
Operating System information
editThe os
flag can be set to retrieve information that concern
the operating system:
-
os.refresh_interval_in_millis
- Refresh interval for the OS statistics
-
os.name
- Name of the operating system (ex: Linux, Windows, Mac OS X)
-
os.arch
- Name of the JVM architecture (ex: amd64, x86)
-
os.version
- Version of the operating system
-
os.available_processors
- Number of processors available to the Java virtual machine
-
os.allocated_processors
-
The number of processors actually used to calculate thread pool size. This number can be set
with the
processors
setting of a node and defaults to the number of processors reported by the OS. In both cases this number will never be larger than 32.
Process information
editThe process
flag can be set to retrieve information that concern
the current running process:
-
process.refresh_interval_in_millis
- Refresh interval for the process statistics
-
process.id
- Process identifier (PID)
-
process.mlockall
- Indicates if the process address space has been successfully locked in memory
Plugins information
editplugins
- if set, the result will contain details about the loaded
plugins per node:
-
name
: plugin name -
description
: plugin description if any -
site
:true
if the plugin is a site plugin -
jvm
:true
if the plugin is a plugin running in the JVM -
url
: URL if the plugin is a site plugin
The result will look similar to:
{ "cluster_name" : "test-cluster-MacBook-Air-de-David.local", "nodes" : { "hJLXmY_NTrCytiIMbX4_1g" : { "name" : "node4", "transport_address" : "inet[/172.18.58.139:9303]", "hostname" : "MacBook-Air-de-David.local", "version" : "0.90.0.Beta2-SNAPSHOT", "http_address" : "inet[/172.18.58.139:9203]", "plugins" : [ { "name" : "test-plugin", "description" : "test-plugin description", "site" : true, "jvm" : false }, { "name" : "test-no-version-plugin", "description" : "test-no-version-plugin description", "site" : true, "jvm" : false }, { "name" : "dummy", "description" : "No description found for dummy.", "url" : "/_plugin/dummy/", "site" : false, "jvm" : true } ] } } }