ES之索引操作（入门）

ES之索引操作（入门）

一、创建索引
1.向ES服务器发出 【PUT】 请求：http://127.0.0.1:9200/test-index-1，会创建一个名为test-index-1的索引，返回结果如下。

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

2.如果再次创建相同的索引，.向ES服务器发出 【PUT】 请求：http://127.0.0.1:9200/test-index-1，会提示索引已经存在。

{
"error": {
"root_cause": [
{
"type": "resource_already_exists_exception",
"reason": "index [test-index-1/YTJUhyJNQUa-GlH3F1Stvg] already exists",
"index_uuid": "YTJUhyJNQUa-GlH3F1Stvg",
"index": "test-index-1"
}
],
"type": "resource_already_exists_exception",
"reason": "index [test-index-1/YTJUhyJNQUa-GlH3F1Stvg] already exists",
"index_uuid": "YTJUhyJNQUa-GlH3F1Stvg",
"index": "test-index-1"
},
"status": 400
}

二、索引查询
1.查询索引名为test-index-1的相关信息
【GET】 请求：http://127.0.0.1:9200/test-index-1

{
"test-index-1": {
"aliases": {},
"mappings": {},
"settings": {
"index": {
"routing": {
"allocation": {
"include": {
"_tier_preference": "data_content"
}
}
},
"number_of_shards": "1",
"provided_name": "test-index-1",
"creation_date": "1635770982635",
"number_of_replicas": "1",
"uuid": "YTJUhyJNQUa-GlH3F1Stvg",
"version": {
"created": "7140299"
}
}
}
}
}

2.查询ES中所有索引的信息
【GET】请求：http://127.0.0.1:9200/_cat/indices?v

参数"v"表示展示详细信息

health status index
uuid
pri rep docs.count docs.deleted store.size pri.store.size
green
open
.geoip_databases j4oGXmv7SkefSwnzSoIgZQ
1
0
41
0
40.3mb
40.3mb
yellow open
test
hCtSSMGnSDWZ41yXS81hGg
1
1
0
0
208b
208b
yellow open
test-index-1
YTJUhyJNQUa-GlH3F1Stvg
1
1
0
0
208b
208b
yellow open
test-index-2
ZX2u0tZUSs-2pzRGTjAbdw
1
1
0
0
208b
208b
yellow open
test-index-3
G7-Eu3AdQ3eCjfRm9RHqMg
1
1
0
0
208b
208b

三、删除索引
1.删除索引名为test-index-3的索引
【DELETE】请求：http://127.0.0.1:9200/test-index-3

{
"acknowledged": true
}

2.再次执行会提示没有此索引

{
"error": {
"root_cause": [
{
"type": "index_not_found_exception",
"reason": "no such index [test-index-3]",
"resource.type": "index_or_alias",
"resource.id": "test-index-3",
"index_uuid": "_na_",
"index": "test-index-3"
}
],
"type": "index_not_found_exception",
"reason": "no such index [test-index-3]",
"resource.type": "index_or_alias",
"resource.id": "test-index-3",
"index_uuid": "_na_",
"index": "test-index-3"
},
"status": 404
}

最后

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