[...]
{
  "connector.class": "io.confluent.connect.elasticsearch.ElasticsearchSinkConnector",
  "topics"         : "my_topic",
  "connection.url" : "http://elasticsearch:9200",
  "type.name"      : "_doc",
  "key.ignore"     : "true",
  "schema.ignore"  : "true"
}
[...]