ElasticSearch 几个比较实用的配置

下载地址：https://github.com/medcl/elasticsearch-analysis-ik/releases

选择与自己ElasticSearch版本号一致的zip包进行下载

下载完后复制到ElasticSearch安装路径的plugins目录下，然后解压缩，因为解压后文件夹名字有点长，可以修改一下，一般大家都习惯性地修改为ik

进入ik分词器路径下的config目录，修改IKAnalyzer.cfg.xml

	IK Analyzer 扩展配置
	
	a.dic;b.dic
	 
	
	
	
	
	

配置完后重启ES

先看看报错

{
  "error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "Result window is too large, from + size must be less than or equal to: [10000] but was [10010]. 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."
      }
    ],
    "type" : "search_phase_execution_exception",
    "reason" : "all shards failed",
    "phase" : "query",
    "grouped" : true,
    "failed_shards" : [
      {
        "shard" : 0,
        "index" : "public_resource_master",
        "node" : "C38y1RXeTQKvLw8U0cgqWw",
        "reason" : {
          "type" : "illegal_argument_exception",
          "reason" : "Result window is too large, from + size must be less than or equal to: [10000] but was [10010]. 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."
        }
      }
    ],
    "caused_by" : {
      "type" : "illegal_argument_exception",
      "reason" : "Result window is too large, from + size must be less than or equal to: [10000] but was [10010]. 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.",
      "caused_by" : {
        "type" : "illegal_argument_exception",
        "reason" : "Result window is too large, from + size must be less than or equal to: [10000] but was [10010]. 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."
      }
    }
  },
  "status" : 400
}

仔细阅读错误消息（This limit can be set by changing the [index.max_result_window] index level setting.）后，发现可以通过更改 [index.max_result_window] 索引级别设置来设置此限制。

PUT your_index_name/_settings
{
  "index": {
    "max_result_window": 1000000000 # 默认为10000，修改后立即生效，无须重启ES
  }
}

# 修改elasticsearch.yml文件，添加一下配置
http.cors.enabled: true
http.cors.allow-origin: "*"
# 
http.cors.allow-headers: Content-Type,Accept,Authorization, x-requested-with

# 修改elasticsearch.yml配置文件，修改设置
network.host: 0.0.0.0
# 转发
transport.host: localhost
# TCP端口转发
transport.tcp.port: 9300
# http端口
http.port: 9200

注：开启远程访问后，防火墙也要开放9200端口入站规则，如果是阿里云服务器还要添加安全组规则