elasticsearch-8.x용 java api client: https 및 계정 인증을 이용한 ElasticSearchClient public class ElasticClient { private static Logger log = LoggerFactory.getLogger(ElasticClient.class); private static ElasticsearchClient client = null; private static ElasticsearchTransport transport = null; public static synchronized ElasticsearchClient getInstacne() { if(client == null) { // 아이피1:9200;아이피2:9200 String ..