索引操作

创建索引

向ES服务器发PUT请求

http://127.0.0.1:9200/demo

{
	"acknowledged": true,
	"shards_acknowledged": true,
	"index": "demo"
}

查看单个索引

向ES服务器发GET请求

http://127.0.0.1:9200/demo

{
	"demo": {
		"aliases": {},
		"mappings": {},
		"settings": {
			"index": {
				"creation_date": "1632061699362",
				"number_of_shards": "1",
				"number_of_replicas": "1",
				"uuid": "PMskybxnT6WHoA2hWHFETw",
				"version": {
					"created": "7080099"
				},
				"provided_name": "demo"
			}
		}
	}
}

查看所有索引

向ES服务器发GET请求

http://127.0.0.1:9200/_cat/indices?v

health status index uuid                   pri rep docs.count docs.deleted store.size pri.store.size
yellow open   demo  PMskybxnT6WHoA2hWHFETw   1   1          0            0       208b           208b

表头	含义
health	当前服务器健康状态：
green:	集群完整
yellow:	单点正常、集群不完整
red:	单点不正常
status	索引打开、关闭状态
index	索引名
uuid	索引统一编号
pri	主分片数量
rep	副本数量
docs.count	可用文档数量
docs.deleted	文档删除状态（逻辑删除）
store.size	主分片和副分片整体占空间大小
pri.store.size	主分片占空间大小

删除索引

向ES服务器发DELETE请求

http://127.0.0.1:9200/demo

{
	"acknowledged": true
}