今天在查询日志的时候graylog报了一个错：

While retrieving data for this widget, the following error(s) occurred:
Unable to perform search query: Elasticsearch exception [type=illegal_argument_exception, reason=Result window is too large, from + size must be less than or equal to: [10000] but was [12081150]. See the scroll api for a more efficient way to request large data sets. This limit can be set by changing the [index.max_result_window] index level setting.].

        说是ES默认设置最大搜索窗口（index.max_result_window）为10000条，也是是搜索可以返回的条数

        查了下可以修改index.max_result_window

1.修改现有的索引

        在ES所在的服务器中输入以下指令

curl -H "Content-Type: application/json" -XPUT http://127.0.0.1:9200/_all/_settings -d '{ "index" : { "max_result_window" : 1000000}}'

2.修改索引模板，从而新创建的索引也修改index.max_result_window

curl -H "Content-Type: application/json" -XPUT http://127.0.0.1:9200/_template/graylog-gdmp-mapping -d '{
  "order": 1,
  "index_patterns": [
    "gdmp_*"
  ],
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "analyzer_keyword": {
            "filter": "lowercase",
            "tokenizer": "keyword"
          }
        }
      },
      "max_result_window": 1000000
    }
  },
  "mappings": {
    "_source": {
      "enabled": true
    },
    "dynamic_templates": [
      {
        "internal_fields": {
          "mapping": {
            "type": "keyword"
          },
          "match_mapping_type": "string",
          "match": "gl2_*"
        }
      },
      {
        "store_generic": {
          "mapping": {
            "type": "keyword"
          },
          "match_mapping_type": "string"
        }
      }
    ],
    "properties": {
      "streams": {
        "type": "keyword"
      },
      "message": {
        "fielddata": false,
        "analyzer": "standard",
        "type": "text"
      },
      "timestamp": {
        "format": "uuuu-MM-dd HH:mm:ss.SSS",
        "type": "date"
      }
    }
  }
}'

•  这个 cURL 命令的目的是在 Elasticsearch 中创建或更新名为 graylog-gdmp-mapping 的模板，该模板适用于以 gdmp_ 开头的所有索引，并定义了相应的映射和设置。