OpenMetadata/ingestion/examples/sample_data/searchIndexes/service.json

{
  "type": "elasticsearch",
  "serviceName": "elasticsearch_sample",
  "serviceConnection": {
    "config": {
      "type": "ElasticSearch",
      "hostPort": "http://localhost:9200"
    }
  },
  "sourceConfig": {
    "config": {
      "type": "SearchMetadata"
    }
  }
}