新增索引

使用PUT方法

PUT http://localhost:9200/itest

{
 "acknowledged": true, #true代表处理成功
 "shards_acknowledged": true,
 "index": "itest" #索引名称
 }

查询itest 索引元数据

使用 GET

GET http://localhost:9200/itest

{
    "itest": {
        "aliases": {}, #别名
        "mappings": {}, #映射
        "settings": { #设置
            "index": { #索引内容
                "creation_date": "1648466304882", #创建时间
                "number_of_shards": "1", #分片数量
                "number_of_replicas": "1", #副本数量
                "uuid": "OSd-On8oSVue5y8LyoHgGA", #id
                "version": { #版本
                    "created": "7090399"
                },
                "provided_name": "itest" #索引名
            }
        }
    }
}

删除索引

DELETE http://localhost:9200/itest

{
    "acknowledged": true
}

查询所有索引元数据

{
    "itest": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1648466517684",
                "number_of_shards": "1",
                "number_of_replicas": "1",
                "uuid": "NJCgFaOJSHaJFAXC-YyYCg",
                "version": {
                    "created": "7090399"
                },
                "provided_name": "itest"
            }
        }
    },
    "itest2": {
        "aliases": {},
        "mappings": {},
        "settings": {
            "index": {
                "creation_date": "1648466521090",
                "number_of_shards": "1",
                "number_of_replicas": "1",
                "uuid": "EuE6JUH9Tg62bso8UbLVhA",
                "version": {
                    "created": "7090399"
                },
                "provided_name": "itest2"
            }
        }
    }
}

查询索引的摘要信息

GET http://localhost:9200/_cat/indices?v

health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
yellow open itest NJCgFaOJSHaJFAXC-YyYCg 1 1 0 0 208b 208b
yellow open itest2 EuE6JUH9Tg62bso8UbLVhA 1 1 0 0 208b 208b

• health: 健康状况 green:健康 yellow:存在风险 red:存在问题
• status: open:打开 close:关闭
• index: 索引名
  uuid: 唯一标识
• pri: 主分片数量
• rep: 副本数量
• doc.count: 文档(记录)总数
• doc.deleted: 被删除的文档总量
• store.size: 总占用空间 = 主分片+副本
• pri.store.size: 主分片占用的数据总量