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Cluster stats
Introduced 1.0
The cluster stats API operation returns statistics about your cluster.
Path and HTTP methods
GET _cluster/stats
GET _cluster/stats/nodes/<node-filters>
URL parameters
All cluster stats parameters are optional.
| Parameter | Type | Description |
|---|---|---|
| <node-filters> | List | A comma-separated list of node filters that OpenSearch uses to filter results. |
Although the master node is now called cluster_manager for version 2.0, we retained the master field for backwards compatibility. If you have a node that has either a master role or a cluster_manager role, the count increases for both fields by 1. To see an example node count increase, see the Response sample.
Example request
The following example requests returns information about the cluster manager node:
GET _cluster/stats/nodes/_cluster_manager
Example response
{
"_nodes": {
"total": 1,
"successful": 1,
"failed": 0
},
"cluster_name": "opensearch-cluster",
"cluster_uuid": "QravFieJS_SlZJyBMcDMqQ",
"timestamp": 1644607845054,
"status": "yellow",
"indices": {
"count": 114,
"shards": {
"total": 121,
"primaries": 60,
"replication": 1.0166666666666666,
"index": {
"shards": {
"min": 1,
"max": 2,
"avg": 1.0614035087719298
},
"primaries": {
"min": 0,
"max": 2,
"avg": 0.5263157894736842
},
"replication": {
"min": 0.0,
"max": 1.0,
"avg": 0.008771929824561403
}
}
},
"docs": {
"count": 134263,
"deleted": 115
},
"store": {
"size_in_bytes": 70466547,
"reserved_in_bytes": 0
},
"fielddata": {
"memory_size_in_bytes": 664,
"evictions": 0
},
"query_cache": {
"memory_size_in_bytes": 0,
"total_count": 1,
"hit_count": 0,
"miss_count": 1,
"cache_size": 0,
"cache_count": 0,
"evictions": 0
},
"completion": {
"size_in_bytes": 0
},
"segments": {
"count": 341,
"memory_in_bytes": 3137244,
"terms_memory_in_bytes": 2488992,
"stored_fields_memory_in_bytes": 167672,
"term_vectors_memory_in_bytes": 0,
"norms_memory_in_bytes": 346816,
"points_memory_in_bytes": 0,
"doc_values_memory_in_bytes": 133764,
"index_writer_memory_in_bytes": 0,
"version_map_memory_in_bytes": 0,
"fixed_bit_set_memory_in_bytes": 1112,
"max_unsafe_auto_id_timestamp": 1644269449096,
"remote_store" : {
"upload" : {
"total_upload_size" : {
"started_bytes" : 152419,
"succeeded_bytes" : 152419,
"failed_bytes" : 0
},
"refresh_size_lag" : {
"total_bytes" : 0,
"max_bytes" : 0
},
"max_refresh_time_lag_in_millis" : 0,
"total_time_spent_in_millis" : 516,
"pressure" : {
"total_rejections" : 0
}
},
"download" : {
"total_download_size" : {
"started_bytes" : 0,
"succeeded_bytes" : 0,
"failed_bytes" : 0
},
"total_time_spent_in_millis" : 0
}
},
"file_sizes": {}
},
"mappings": {
"field_types": [
{
"name": "alias",
"count": 1,
"index_count": 1
},
{
"name": "binary",
"count": 1,
"index_count": 1
},
{
"name": "boolean",
"count": 87,
"index_count": 22
},
{
"name": "date",
"count": 185,
"index_count": 91
},
{
"name": "double",
"count": 5,
"index_count": 2
},
{
"name": "float",
"count": 4,
"index_count": 1
},
{
"name": "geo_point",
"count": 4,
"index_count": 3
},
{
"name": "half_float",
"count": 12,
"index_count": 1
},
{
"name": "integer",
"count": 144,
"index_count": 29
},
{
"name": "ip",
"count": 2,
"index_count": 1
},
{
"name": "keyword",
"count": 1939,
"index_count": 109
},
{
"name": "knn_vector",
"count": 1,
"index_count": 1
},
{
"name": "long",
"count": 158,
"index_count": 92
},
{
"name": "nested",
"count": 25,
"index_count": 10
},
{
"name": "object",
"count": 420,
"index_count": 91
},
{
"name": "text",
"count": 1768,
"index_count": 102
}
]
},
"analysis": {
"char_filter_types": [],
"tokenizer_types": [],
"filter_types": [],
"analyzer_types": [],
"built_in_char_filters": [],
"built_in_tokenizers": [],
"built_in_filters": [],
"built_in_analyzers": [
{
"name": "english",
"count": 1,
"index_count": 1
}
]
}
},
"nodes": {
"count": {
"total": 1,
"coordinating_only": 0,
"data": 1,
"ingest": 1,
"master": 1,
"cluster_manager": 1,
"remote_cluster_client": 1
},
"versions": [
"1.2.4"
],
"os": {
"available_processors": 6,
"allocated_processors": 6,
"names": [
{
"name": "Linux",
"count": 1
}
],
"pretty_names": [
{
"pretty_name": "Amazon Linux 2",
"count": 1
}
],
"mem": {
"total_in_bytes": 6232674304,
"free_in_bytes": 1452658688,
"used_in_bytes": 4780015616,
"free_percent": 23,
"used_percent": 77
}
},
"process": {
"cpu": {
"percent": 0
},
"open_file_descriptors": {
"min": 970,
"max": 970,
"avg": 970
}
},
"jvm": {
"max_uptime_in_millis": 108800629,
"versions": [
{
"version": "15.0.1",
"vm_name": "OpenJDK 64-Bit Server VM",
"vm_version": "15.0.1+9",
"vm_vendor": "AdoptOpenJDK",
"bundled_jdk": true,
"using_bundled_jdk": true,
"count": 1
}
],
"mem": {
"heap_used_in_bytes": 178956256,
"heap_max_in_bytes": 536870912
},
"threads": 112
},
"fs": {
"total_in_bytes": 62725623808,
"free_in_bytes": 28442726400,
"available_in_bytes": 25226010624
},
"plugins": [
{
"name": "opensearch-index-management",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch Index Management Plugin",
"classname": "org.opensearch.indexmanagement.IndexManagementPlugin",
"custom_foldername": "",
"extended_plugins": [
"opensearch-job-scheduler"
],
"has_native_controller": false
},
{
"name": "opensearch-security",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "Provide access control related features for OpenSearch 1.0.0",
"classname": "org.opensearch.security.OpenSearchSecurityPlugin",
"custom_foldername": "opensearch-security",
"extended_plugins": [],
"has_native_controller": false
},
{
"name": "opensearch-cross-cluster-replication",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch Cross Cluster Replication Plugin",
"classname": "org.opensearch.replication.ReplicationPlugin",
"custom_foldername": "",
"extended_plugins": [],
"has_native_controller": false
},
{
"name": "opensearch-job-scheduler",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch Job Scheduler plugin",
"classname": "org.opensearch.jobscheduler.JobSchedulerPlugin",
"custom_foldername": "",
"extended_plugins": [],
"has_native_controller": false
},
{
"name": "opensearch-anomaly-detection",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch anomaly detector plugin",
"classname": "org.opensearch.ad.AnomalyDetectorPlugin",
"custom_foldername": "",
"extended_plugins": [
"lang-painless",
"opensearch-job-scheduler"
],
"has_native_controller": false
},
{
"name": "opensearch-performance-analyzer",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch Performance Analyzer Plugin",
"classname": "org.opensearch.performanceanalyzer.PerformanceAnalyzerPlugin",
"custom_foldername": "",
"extended_plugins": [],
"has_native_controller": false
},
{
"name": "opensearch-reports-scheduler",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "Scheduler for Dashboards Reports Plugin",
"classname": "org.opensearch.reportsscheduler.ReportsSchedulerPlugin",
"custom_foldername": "",
"extended_plugins": [
"opensearch-job-scheduler"
],
"has_native_controller": false
},
{
"name": "opensearch-asynchronous-search",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "Provides support for asynchronous search",
"classname": "org.opensearch.search.asynchronous.plugin.AsynchronousSearchPlugin",
"custom_foldername": "",
"extended_plugins": [],
"has_native_controller": false
},
{
"name": "opensearch-knn",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch k-NN plugin",
"classname": "org.opensearch.knn.plugin.KNNPlugin",
"custom_foldername": "",
"extended_plugins": [
"lang-painless"
],
"has_native_controller": false
},
{
"name": "opensearch-alerting",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "Amazon OpenSearch alerting plugin",
"classname": "org.opensearch.alerting.AlertingPlugin",
"custom_foldername": "",
"extended_plugins": [
"lang-painless"
],
"has_native_controller": false
},
{
"name": "opensearch-observability",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch Plugin for OpenSearch Dashboards Observability",
"classname": "org.opensearch.observability.ObservabilityPlugin",
"custom_foldername": "",
"extended_plugins": [],
"has_native_controller": false
},
{
"name": "opensearch-sql",
"version": "1.2.4.0",
"opensearch_version": "1.2.4",
"java_version": "1.8",
"description": "OpenSearch SQL",
"classname": "org.opensearch.sql.plugin.SQLPlugin",
"custom_foldername": "",
"extended_plugins": [],
"has_native_controller": false
}
],
"network_types": {
"transport_types": {
"org.opensearch.security.ssl.http.netty.SecuritySSLNettyTransport": 1
},
"http_types": {
"org.opensearch.security.http.SecurityHttpServerTransport": 1
}
},
"discovery_types": {
"zen": 1
},
"packaging_types": [
{
"type": "tar",
"count": 1
}
],
"ingest": {
"number_of_pipelines": 0,
"processor_stats": {}
}
}
}
Response body fields
| Field | Description |
|---|---|
| nodes | How many nodes returned in the response. |
| cluster_name | The cluster’s name. |
| cluster_uuid | The cluster’s uuid. |
| timestamp | The Unix epoch time of when the cluster was last refreshed. |
| status | The cluster’s health status. |
| indices | Statistics about the indexes in the cluster. |
| indices.count | How many indexes are in the cluster. |
| indices.shards | Information about the cluster’s shards. |
| indices.docs | How many documents are still in the cluster and how many documents are deleted. |
| indices.store | Information about the cluster’s storage. |
| indices.fielddata | Information about the cluster’s field data |
| indices.query_cache | Data about the cluster’s query cache. |
| indices.completion | How many bytes in memory are used to complete operations. |
| indices.segments | Information about the cluster’s segments, which are small Lucene indexes. |
| indices.mappings | Mappings within the cluster. |
| indices.analysis | Information about analyzers used in the cluster. |
| nodes | Statistics about the nodes in the cluster. |
| nodes.count | How many nodes were returned from the request. |
| nodes.versions | OpenSearch’s version number. |
| nodes.os | Information about the operating systems used in the nodes. |
| nodes.process | The processes the returned nodes use. |
| nodes.jvm | Statistics about the Java Virtual Machines in use. |
| nodes.fs | The nodes’ file storage. |
| nodes.plugins | The OpenSearch plugins integrated within the nodes. |
| nodes.network_types | The transport and HTTP networks within the nodes. |
| nodes.discovery_type | The method the nodes use to find other nodes within the cluster. |
| nodes.packaging_types | Information about the nodes’ OpenSearch distribution. |
| nodes.ingest | Information about the nodes’ ingest pipelines/nodes, if there are any. |
| total_time_spent | The total amount of download and upload time spent across all shards in the cluster when downloading or uploading from the remote store. |