1. Quickly check the cluster health status: GET /_cat/health? V. The cluster health status can be green, yellow, or red
Green: The primary shard and replica shard of each index are active
Yellow: The primary shard of each index is in active state, but some Replica shards are not in active state
Red: Not all index primary shards are active. Some index data is missing
Index: GET /_cat/indices v
3. Simple index operations
Create index: PUT /test_index? pretty
DELETE index: DELETE /test_index? pretty
4. CRUD of example goods
1. Add new products, add new documents and build indexes
Syntax: PUT /index/type/id {json data}
PUT /test_index2/product/1
{
“name” : “gaolujie yagao”,
“desc” : “gaoxiao meibai”,
“price” : 30,
“producer” : “gaolujie producer”,
“tags”: [ “meibai”, “fangzhu” ]
}
Es will automatically set up index and type, which need not be set up in advance, and ES will set up inverted index for each document field by default, so that it can be searched
2. Query products and retrieve documents
Syntax: GET /index/type/ ID
GET /test_index2/product/1
3. Update products and replace documents
PUT /test_index2/product/1
{
“name” : “jiaqiangban gaolujie yagao”,
“desc” : “gaoxiao meibai”,
“price” : 30,
“producer” : “gaolujie producer”,
“tags”: [ “meibai”, “fangzhu” ]
}
A drawback of this method is that the document must carry all the fields before it can be modified. If only the modified name is written, then {} contains the name and no other fields
4. Update products and documents
POST /test_index2/product/1/_update
{
“doc”: {
“name”: “jiaqiangban gaolujie yagao”
}
}
5. Delete the document
DELETE /test_index2/product/1