Using curl to Perform CRUD Operations in Elasticsearch

Elasticsearch is a search server built on Lucene that offers a distributed, multi‑user full‑text search engine accessed via a RESTful web interface. Developed in Java and released under the Apache license, it is a popular enterprise‑grade search solution used in cloud computing for real‑time, stable, reliable, and fast search, with easy installation.

curl operation: more cumbersome, use this method for CRUD

Kibana operation ES: provides a simplified tool

Write data (specify document ID):

[root@master ~]# curl -u elastic:hahashen -X PUT http://192.168.20.41:9200/hahashen/_doc/1 -H 'Content-Type: application/json' -d '{"name": "hahashen", "age": 30}'

View the inserted document formatted with Python:

[root@master ~]# curl -u elastic:hahashen -X PUT http://192.168.20.41:9200/hahashen/_doc/1|python -m json.tool

Write data with a random ID (auto‑generated):

[root@master ~]# curl -u elastic:hahashen -X POST http://192.168.20.41:9200/hahashen/_doc -H 'Content-Type: application/json' -d '{"name": "hahashen", "age": 25}'

Update a document:

[root@master ~]# curl -u elastic:hahashen -X POST http://192.168.20.41:9200/hahashen/_update/1 -H 'Content-Type: application/json' -d '{"doc":{"age": 20}}'

Delete a document:

[root@master ~]# curl -u elastic:hahashen -X DELETE http://192.168.20.41:9200/hahashen/_doc/1

{"_index":"hahashen","_type":"_doc","_id":"1","_version":4,"result":"deleted","_shards":{"total":2,"successful":1,"failed":0},"_seq_no":4,"_primary_term":1}

Delete an entire index:

[root@master ~]# curl -u elastic:hahashen -X DELETE http://192.168.20.41:9200/hahashen

{"acknowledged":true}