_stats/ indexes给出带有索引的结果。

$ curl -XGET "localhost:9200/_stats/indices?pretty=true"
{
  "_shards" : {
    "total" : 10,
    "successful" : 5,
    "failed" : 0
  },
  "_all" : {
    "primaries" : { },
    "total" : { }
  },
  "indices" : {
    "visitors" : {
      "primaries" : { },
      "total" : { }
    }
  }
}

如果你使用scala，一种方法是创建一个RequestExecutor，然后使用IndicesStatsRequestBuilder和管理客户端来提交你的请求。

import org.elasticsearch.action.{ ActionRequestBuilder, ActionListener, ActionResponse }
import scala.concurrent.{ Future, Promise, blocking }

/** Convenice wrapper for creating RequestExecutors */
object RequestExecutor {
    def apply[T <: ActionResponse](): RequestExecutor[T] = {
        new RequestExecutor[T]
    }
}

/** Wrapper to convert an ActionResponse into a scala Future
 *
 *  @see http://chris-zen.github.io/software/2015/05/10/elasticsearch-with-scala-and-akka.html
 */
class RequestExecutor[T <: ActionResponse] extends ActionListener[T] {
    private val promise = Promise[T]()

    def onResponse(response: T) {
        promise.success(response)
    }

    def onFailure(e: Throwable) {
        promise.failure(e)
    }

    def execute[RB <: ActionRequestBuilder[_, T, _, _]](request: RB): Future[T] = {
        blocking {
            request.execute(this)
            promise.future
        }
    }
}

执行器摘自这篇博客文章，如果您试图以编程方式而不是通过curl查询ES，那么这篇文章绝对是一本不错的读物。首先，你可以很容易地创建一个所有索引的列表，如下所示:

def totalCountsByIndexName(): Future[List[(String, Long)]] = {
    import scala.collection.JavaConverters._
    val statsRequestBuider = new IndicesStatsRequestBuilder(client.admin().indices())
    val futureStatResponse = RequestExecutor[IndicesStatsResponse].execute(statsRequestBuider)
    futureStatResponse.map { indicesStatsResponse =>
        indicesStatsResponse.getIndices().asScala.map {
            case (k, indexStats) => {
                val indexName = indexStats.getIndex()
                val totalCount = indexStats.getTotal().getDocs().getCount()
                    (indexName, totalCount)
                }
        }.toList
    }
}

client是client的实例，可以是节点或传输客户端，取决于您的需要。您还需要在这个请求的作用域中有一个隐式的ExecutionContext。如果你试图在没有导入它的情况下编译这段代码，那么你会从scala编译器那里得到一个警告，告诉你如果你还没有导入它的话，该如何得到它。

我需要文档计数，但如果你真的只需要索引的名称，你可以从地图的键拉他们，而不是从IndexStats:

indicesStatsResponse.getIndices().keySet()

这个问题会在你搜索如何做到这一点时出现，即使你试图以编程的方式做到这一点，所以我希望这能帮助任何想在scala/java中做到这一点的人。否则，curl用户可以按照上面的答案使用

curl http://localhost:9200/_aliases

curl -XGET 'http://localhost:9200/_cluster/health?水平=指数'

这将输出如下所示

{
  "cluster_name": "XXXXXX:name",
  "status": "green",
  "timed_out": false,
  "number_of_nodes": 3,
  "number_of_data_nodes": 3,
  "active_primary_shards": 199,
  "active_shards": 398,
  "relocating_shards": 0,
  "initializing_shards": 0,
  "unassigned_shards": 0,
  "delayed_unassigned_shards": 0,
  "number_of_pending_tasks": 0,
  "number_of_in_flight_fetch": 0,
  "task_max_waiting_in_queue_millis": 0,
  "active_shards_percent_as_number": 100,
  "indices": {
    "logstash-2017.06.19": {
      "status": "green",
      "number_of_shards": 3,
      "number_of_replicas": 1,
      "active_primary_shards": 3,
      "active_shards": 6,
      "relocating_shards": 0,
      "initializing_shards": 0,
      "unassigned_shards": 0
    },
    "logstash-2017.06.18": {
      "status": "green",
      "number_of_shards": 3,
      "number_of_replicas": 1,
      "active_primary_shards": 3,
      "active_shards": 6,
      "relocating_shards": 0,
      "initializing_shards": 0,
      "unassigned_shards": 0
    }}

对于Elasticsearch 6。X，我发现下面的方法最有帮助。每个响应提供不同的数据。

# more verbose
curl -sS 'localhost:9200/_stats' | jq -C ".indices" | less

# less verbose, summary
curl -sS 'localhost:9200/_cluster/health?level=indices' | jq -C ".indices" | less

To get all the details in Kibana.
 GET /_cat/indices




To get names only in Kibana.
GET /_cat/indices?h=index

如果不使用Kibana，你可以在postman中发送一个get请求，或者在Brower中输入这个，这样你就会得到一个索引名称列表

http://localhost:9200/_cat/indices?h=index

_stats/ indexes给出带有索引的结果。

$ curl -XGET "localhost:9200/_stats/indices?pretty=true"
{
  "_shards" : {
    "total" : 10,
    "successful" : 5,
    "failed" : 0
  },
  "_all" : {
    "primaries" : { },
    "total" : { }
  },
  "indices" : {
    "visitors" : {
      "primaries" : { },
      "total" : { }
    }
  }
}