elasticsearch-白红宇

1、Elasticsearch的堆栈内存设置建议

![image.png](https://upload-images.jianshu.io/upload_images/9967595-3292925868e93be0.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

2、elasticsearch.yml设置中文分词器:

/usr/share/elasticsearch/bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.5.4/elasticsearch-analysis-ik-6.5.4.zip

//安装完，在elasticsearch.yml中添加配置

index.analysis.analyzer.default.type: ik

3、关闭elasticsearch

curl -XPOST http://localhost:9200/_cluster/nodes/_shutdown

![image.png](https://upload-images.jianshu.io/upload_images/9967595-597bda51ab5a749b.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-a061dc15af281ff0.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

4、监控客户端状态的插件head；

http://localhost:9200/_plugin/head

![image.png](https://upload-images.jianshu.io/upload_images/9967595-131208ff47feb219.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

5、Marvel 图形化监控客户端

http://lcalhost:9200/_plugin/marvel/

![image.png](https://upload-images.jianshu.io/upload_images/9967595-25df51a52e04978d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

6、Health 查看集群状态

![image.png](https://upload-images.jianshu.io/upload_images/9967595-1eb5aac0ef86fb76.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

7、架构

![image.png](https://upload-images.jianshu.io/upload_images/9967595-6d2fa8ae7f585f40.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

8、http://ip:9200/index/type/id

index: dbname

type: dbtable

GET/POST/PUT/DELETE

?pretty 增强可读性

9、mapping 映像，相当于数据类型

10、搜索参数：_search?q=location:Shanghai

11、实例

创建索引文件test,用PUT方法创建

创建mapping文件，//不是elasticsearch的注释,mapping相当于对象

![image.png](https://upload-images.jianshu.io/upload_images/9967595-55727fa8223cb779.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-bc980c2df4e27a14.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

创建检索表达式

![image.png](https://upload-images.jianshu.io/upload_images/9967595-7487ac7ff86320af.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-6978ac7e171f65db.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-f580887a3130364c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-c1f0933acefca159.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-33acde1ea5017486.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

12、用XPUT方式创建索引

![image.png](https://upload-images.jianshu.io/upload_images/9967595-396f732ecbf51a0e.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

用_settings修改索引

![image.png](https://upload-images.jianshu.io/upload_images/9967595-2afd3c96a10ea243.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

索引属性：number_of_replicas 索引的副本数量

blocks.read_only 只读 blocks.read 禁止读取 blocks.write blocks.metadata

调取索引的配置：curl -XGET http://ip:port/weibo/_settings

http://xx/weibo1,weibo2/_settings

_all/_settings 所有索引

mar*/_settings

13、插入数据

![image.png](https://upload-images.jianshu.io/upload_images/9967595-857cc25c2c233cf4.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

String,Integer,Long,Float,Double,Boolean,Null,Date

14、_stats 索引状态

![image.png](https://upload-images.jianshu.io/upload_images/9967595-f7e9099392bb797a.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-ab0c6cb6e6ca5a6c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

15、配置mapping

PUT /{index}/_mapping/{type}

PUT /index/type/_mapping -d '{

"wb":{

"properties": {

"mymessage":{

"type":"String",

"store": true

}

获取get /index/_mapping/type

_all/_mapping

获取索引某个字段 get /index/_mapping/type/field/user

删除DELETE

16、打开关闭索引文件

curl -XPOST /myindex/_open

curl -XPOST /myindex/_close

检索 curl -XHEAD /myindex -v

XDELETE

清空索引缓存 curl -XPOST /myindex/_cache/clear

刷新索引数据 curl -XPOST /myindex/_refresh

优化索引数据 curl -XPOST /myindex/_optimize

flush /myindex/_flush

给索引配置分析器

![image.png](https://upload-images.jianshu.io/upload_images/9967595-e17aeeda8f953a70.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

临时使用分词器

![image.png](https://upload-images.jianshu.io/upload_images/9967595-3b4dfdef9a5b8c85.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

获取文档指定信息

![image.png](https://upload-images.jianshu.io/upload_images/9967595-3f0830339931d127.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

?pretty&fields=user 只显示user字段

![image.png](https://upload-images.jianshu.io/upload_images/9967595-3f7407712179b1a7.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

删除 curl -XDELETE ///

数据更新 xput

![image.png](https://upload-images.jianshu.io/upload_images/9967595-c5badaeee2c6d85e.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-e5a34cb4cb634e3c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-513e0267eef33b66.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

![image.png](https://upload-images.jianshu.io/upload_images/9967595-d533ce540d148778.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

xpost + _mget? 批量获取

![image.png](https://upload-images.jianshu.io/upload_images/9967595-3716270a3e9d6bf0.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

_source 获取数据

_query?q=user:xxx

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信息检索:curl -XGET ip/_search?q=hello&pretty=true

terms查询：不作分词

match_all:{} 查询所有

常规查询：+ -