elasticsearchHow do I set up an elasticsearch ingest pipeline?

1. Firstly, you need to create an ingest pipeline in elasticsearch. This can be done by sending a PUT request to the _ingest/pipeline endpoint with the pipeline definition in the body. For example:

PUT _ingest/pipeline/my_pipeline
{
  "description" : "my pipeline",
  "processors" : [
    {
      "set" : {
        "field": "field_1",
        "value": "value_1"
      }
    }
  ]
}

2. The response of the request will be a 201 Created status, if the pipeline was created successfully.
3. The next step is to index documents into Elasticsearch. This can be done by sending a POST request to the _bulk endpoint with the documents in the body. For example:

POST _bulk
{ "index" : { "_index" : "my_index", "_type" : "my_type" } }
{ "field_1" : "value_1" }

4. To enable the ingest pipeline, you need to add the pipeline parameter to the _bulk request. For example:

POST _bulk?pipeline=my_pipeline
{ "index" : { "_index" : "my_index", "_type" : "my_type" } }
{ "field_1" : "value_1" }

5. The response of the request will be a 200 OK status, if the documents were indexed successfully.
6. The documents that were indexed will have the fields that were set in the ingest pipeline.
7. For more information, see the Elasticsearch documentation.

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