--- layout: default title: Cluster stats parent: REST API reference nav_order: 65 --- # Cluster stats Introduced 1.0 {: .label .label-purple } The cluster stats API operation returns statistics about your cluster. ## Examples ```json GET _cluster/stats/nodes/_master ``` ## Path and HTTP methods ```json GET _cluster/stats GET _cluster/stats/nodes/ ``` ## URL parameters All cluster stats parameters are optional. Parameter | Type | Description :--- | :--- | :--- <node-filters> | List | A comma-separated list of [node-filters](../nodes-apis/index/#node-filters) that OpenSearch uses to filter results. ## Response ```json { "_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, "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, "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 abotu 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.