elasticsearch 查看集群统计信息

统计信息包含 集群的分片数，文档数，存储空间，缓存信息，内存作用率，插件内容，文件系统内容，JVM作用状况，系统CPU，OS信息，段信息。

查看全部统计信息命令：

curl -XGET 'http://localhost:8200/_cluster/stats?pretty'

结果：

{  "timestamp" : 1401257069496,  "cluster_name" : "if2c",  "status" : "yellow",  "indices" : {    "count" : 3,    "shards" : {      "total" : 3,      "primaries" : 3,      "replication" : 0.0,      "index" : {        "shards" : {          "min" : 1,          "max" : 1,          "avg" : 1.0        },        "primaries" : {          "min" : 1,          "max" : 1,          "avg" : 1.0        },        "replication" : {          "min" : 0.0,          "max" : 0.0,          "avg" : 0.0        }      }    },    "docs" : {                    //文档信息      "count" : 39642,      "deleted" : 0    },    "store" : {                   //存储信息      "size" : "15.4mb",      "size_in_bytes" : 16235013,      "throttle_time" : "208.7ms",      "throttle_time_in_millis" : 208    },    "fielddata" : {                //字段信息      "memory_size" : "1.7mb",      "memory_size_in_bytes" : 1846772,      "evictions" : 0    },    "filter_cache" : {            //缓存      "memory_size" : "182.6kb",      "memory_size_in_bytes" : 187045,      "evictions" : 0    },    "id_cache" : {      "memory_size" : "0b",      "memory_size_in_bytes" : 0    },    "completion" : {      "size" : "219.6kb",      "size_in_bytes" : 224886    },    "segments" : {              //段信息，luence段      "count" : 10,      "memory" : "0b",      "memory_in_bytes" : 0    }  },  "nodes" : {                         //节点信息    "count" : {      "total" : 1,      "master_only" : 0,      "data_only" : 0,      "master_data" : 1,      "client" : 0    },    "versions" : [ "0.90.9" ],      版本    "os" : {      "available_processors" : 8,      "mem" : {                         //内存        "total" : "7.6gb",        "total_in_bytes" : 8254771200      },      "cpu" : [ {                     //CPU信息        "vendor" : "Intel",        "model" : "Xeon",        "mhz" : 1995,        "total_cores" : 8,        "total_sockets" : 4,        "cores_per_socket" : 2,        "cache_size" : "4kb",        "cache_size_in_bytes" : 4096,        "count" : 1      } ]    },    "process" : {      "cpu" : {        "percent" : 0      },      "avg_open_file_descriptors" : 435    },    "jvm" : {                                //JVM信息      "max_uptime" : "1.8d",      "max_uptime_in_millis" : 159452573,      "versions" : [ {        "version" : "1.7.0_15",        "vm_name" : "Java HotSpot(TM) 64-Bit Server VM",        "vm_version" : "23.7-b01",        "vm_vendor" : "Oracle Corporation",        "count" : 1      } ],      "mem" : {        "heap_used" : "337.3mb",        "heap_used_in_bytes" : 353722720,        "heap_max" : "989.8mb",        "heap_max_in_bytes" : 1037959168      },      "threads" : 112    },    "fs" : {      "total" : "35.2gb",      "total_in_bytes" : 37840687104,      "free" : "20.2gb",      "free_in_bytes" : 21713711104,      "available" : "18.4gb",      "available_in_bytes" : 19791515648,      "disk_reads" : 73151,      "disk_writes" : 2445649,      "disk_io_op" : 2518800,      "disk_read_size" : "1.4gb",      "disk_read_size_in_bytes" : 1605862400,      "disk_write_size" : "19.6gb",      "disk_write_size_in_bytes" : 21100687360,      "disk_io_size" : "21.1gb",      "disk_io_size_in_bytes" : 22706549760,      "disk_queue" : "0",      "disk_service_time" : "8.2"    },    "plugins" : [ {                               //插件信息      "name" : "bigdesk",      "description" : "No description found for bigdesk.",      "url" : "/_plugin/bigdesk/",      "jvm" : false,      "site" : true    },{      "name" : "inquisitor",      "description" : "No description found for inquisitor.",      "url" : "/_plugin/inquisitor/",      "jvm" : false,      "site" : true    }, {      "name" : "analysis-ansj",      "description" : "ansj analysis",      "jvm" : true,      "site" : false    }, {      "name" : "head",      "description" : "No description found for head.",      "url" : "/_plugin/head/",      "jvm" : false,      "site" : true    } ]  }}