Cluster Stats

原文链接 : https://www.elastic.co/guide/en/elasticsearch/reference/5.0/cluster-stats.html

译文链接 : http://www.apache.wiki/display/Elasticsearch/Cluster+Stats

贡献者 : 那伊抹微笑

Cluster Stats（集群统计信息）API 可以获取集范围内的统计信息。该 API 返回基本的索引 metric（度量）（分片数量，存储大小，内存使用）和关于当前集群（编号，角色，系统，jvm 版本，内存使用，cpu 和安装的插件）中节点的信息。

  1. curl -XGET 'http://localhost:9200/_cluster/stats?human&pretty'

响应示例如下 : 

  1. {
  2.    "timestamp": 1459427693515,
  3.    "cluster_name": "elasticsearch",
  4.    "status": "green",
  5.    "indices": {
  6.       "count": 2,
  7.       "shards": {
  8.          "total": 10,
  9.          "primaries": 10,
  10.          "replication": 0,
  11.          "index": {
  12.             "shards": {
  13.                "min": 5,
  14.                "max": 5,
  15.                "avg": 5
  16.             },
  17.             "primaries": {
  18.                "min": 5,
  19.                "max": 5,
  20.                "avg": 5
  21.             },
  22.             "replication": {
  23.                "min": 0,
  24.                "max": 0,
  25.                "avg": 0
  26.             }
  27.          }
  28.       },
  29.       "docs": {
  30.          "count": 10,
  31.          "deleted": 0
  32.       },
  33.       "store": {
  34.          "size": "16.2kb",
  35.          "size_in_bytes": 16684,
  36.          "throttle_time": "0s",
  37.          "throttle_time_in_millis": 0
  38.       },
  39.       "fielddata": {
  40.          "memory_size": "0b",
  41.          "memory_size_in_bytes": 0,
  42.          "evictions": 0
  43.       },
  44.       "query_cache": {
  45.          "memory_size": "0b",
  46.          "memory_size_in_bytes": 0,
  47.          "total_count": 0,
  48.          "hit_count": 0,
  49.          "miss_count": 0,
  50.          "cache_size": 0,
  51.          "cache_count": 0,
  52.          "evictions": 0
  53.       },
  54.       "completion": {
  55.          "size": "0b",
  56.          "size_in_bytes": 0
  57.       },
  58.       "segments": {
  59.          "count": 4,
  60.          "memory": "8.6kb",
  61.          "memory_in_bytes": 8898,
  62.          "terms_memory": "6.3kb",
  63.          "terms_memory_in_bytes": 6522,
  64.          "stored_fields_memory": "1.2kb",
  65.          "stored_fields_memory_in_bytes": 1248,
  66.          "term_vectors_memory": "0b",
  67.          "term_vectors_memory_in_bytes": 0,
  68.          "norms_memory": "384b",
  69.          "norms_memory_in_bytes": 384,
  70.          "doc_values_memory": "744b",
  71.          "doc_values_memory_in_bytes": 744,
  72.          "index_writer_memory": "0b",
  73.          "index_writer_memory_in_bytes": 0,
  74.          "version_map_memory": "0b",
  75.          "version_map_memory_in_bytes": 0,
  76.          "fixed_bit_set": "0b",
  77.          "fixed_bit_set_memory_in_bytes": 0,
  78.          "file_sizes": {}
  79.       },
  80.       "percolator": {
  81.          "num_queries": 0
  82.       }
  83.    },
  84.    "nodes": {
  85.       "count": {
  86.          "total": 1,
  87.          "data": 1,
  88.          "coordinating_only": 0,
  89.          "master": 1,
  90.          "ingest": 1
  91.       },
  92.       "versions": [
  93.          "5.0.1"
  94.       ],
  95.       "os": {
  96.          "available_processors": 8,
  97.          "allocated_processors": 8,
  98.          "names": [
  99.             {
  100.                "name": "Mac OS X",
  101.                "count": 1
  102.             }
  103.          ],
  104.          "mem" : {
  105.             "total" : "16gb",
  106.             "total_in_bytes" : 17179869184,
  107.             "free" : "78.1mb",
  108.             "free_in_bytes" : 81960960,
  109.             "used" : "15.9gb",
  110.             "used_in_bytes" : 17097908224,
  111.             "free_percent" : 0,
  112.             "used_percent" : 100
  113.          }
  114.       },
  115.       "process": {
  116.          "cpu": {
  117.             "percent": 9
  118.          },
  119.          "open_file_descriptors": {
  120.             "min": 268,
  121.             "max": 268,
  122.             "avg": 268
  123.          }
  124.       },
  125.       "jvm": {
  126.          "max_uptime": "13.7s",
  127.          "max_uptime_in_millis": 13737,
  128.          "versions": [
  129.             {
  130.                "version": "1.8.0_74",
  131.                "vm_name": "Java HotSpot(TM) 64-Bit Server VM",
  132.                "vm_version": "25.74-b02",
  133.                "vm_vendor": "Oracle Corporation",
  134.                "count": 1
  135.             }
  136.          ],
  137.          "mem": {
  138.             "heap_used": "57.5mb",
  139.             "heap_used_in_bytes": 60312664,
  140.             "heap_max": "989.8mb",
  141.             "heap_max_in_bytes": 1037959168
  142.          },
  143.          "threads": 90
  144.       },
  145.       "fs": {
  146.          "total": "200.6gb",
  147.          "total_in_bytes": 215429193728,
  148.          "free": "32.6gb",
  149.          "free_in_bytes": 35064553472,
  150.          "available": "32.4gb",
  151.          "available_in_bytes": 34802409472
  152.       },
  153.       "plugins": [
  154.          // all plugins installed on nodes
  155.          {
  156.             "name": "analysis-stempel",
  157.             "version": "5.0.1",
  158.             "description": "The Stempel (Polish) Analysis plugin integrates Lucene stempel (polish) analysis module into elasticsearch.",
  159.             "classname": "org.elasticsearch.plugin.analysis.stempel.AnalysisStempelPlugin"
  160.          }
  161.       ]
  162.    }
  163. }