# Unable to connect my java application to the Elastic Stack Instance **URL:** \ **Category:** Elasticsearch\ **Created:** [June 24, 2020, 10:05am UTC](https://discuss.elastic.co/t/unable-to-connect-my-java-application-to-the-elastic-stack-instance/238430 "2020-06-24T10:05:05Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Ubeta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ubeta/32/70991_2.png) [@Ubeta](https://discuss.elastic.co/u/Ubeta)\ **Post date:** [June 24, 2020, 10:05am UTC](https://discuss.elastic.co/t/unable-to-connect-my-java-application-to-the-elastic-stack-instance/238430/1 "2020-06-24T10:05:05Z")
Hi! I have set up my Elastic Cloud Service through Google Cloud and have set up an Elastic Search Instance. I can upload my data to Elastic search and query my data just fine. However, when I try to connect to the Elastic Search Instance through my Java Client, I keep getting a 'java.io.IOException' and a 'java.net.UnknownHostException' exceptions. ```auto 24-Jun-2020 18:55:52.657 SEVERE [http-nio-8181-exec-8] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [dispatcher] in context with path [] threw exception java.io.IOException: at org.elasticsearch.client.RestClient.extractAndWrapCause(RestClient.java:828) at org.elasticsearch.client.RestClient.performRequest(RestClient.java:248) at org.elasticsearch.client.RestClient.performRequest(RestClient.java:235) at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1611) Caused by: java.net.UnknownHostException: at java.base/java.net.InetAddress$CachedAddresses.get(InetAddress.java:797) at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505) at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364) at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298) at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45) at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager$InternalAddressResolver.resolveRemoteAddress(PoolingNHttpClientConnectionManager.java:664) at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager$InternalAddressResolver.resolveRemoteAddress(PoolingNHttpClientConnectionManager.java:635) at org.apache.http.nio.pool.AbstractNIOConnPool.processPendingRequest(AbstractNIOConnPool.java:474) at org.apache.http.nio.pool.AbstractNIOConnPool.lease(AbstractNIOConnPool.java:280) at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.requestConnection(PoolingNHttpClientConnectionManager.java:295) at org.apache.http.impl.nio.client.AbstractClientExchangeHandler.requestConnection(AbstractClientExchangeHandler.java:377) at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.start(DefaultClientExchangeHandlerImpl.java:129) at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:141) at org.elasticsearch.client.RestClient.performRequest(RestClient.java:244) ... 49 more ``` And my Java Code: ```auto String ELASTIC_SEARCH_USER_NAME = "elastic"; String ELASTIC_SEARCH_PASSWORD = ; String ELASTIC_SEARCH_ENDPOINT_URL = "https://92d5f385db294fb4b7ff335201d0a854.asia-northeast1.gcp.cloud.es.io"; Integer ELASTIC_SEARCH_PORT = 9243; final CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(ELASTIC_SEARCH_USER_NAME, ELASTIC_SEARCH_PASSWORD)); RestClientBuilder builder = RestClient.builder(new HttpHost(ELASTIC_SEARCH_ENDPOINT_URL, ELASTIC_SEARCH_PORT, "https")) .setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() { @Override public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) { return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider); } }); RestHighLevelClient highLevelClient = new RestHighLevelClient(builder); ``` Strangely, I have tried pinging my endpoint url in the command line but my cmd is unable to ping the url. Is there something I need to set up in my Elastic Stack Console for my Java Client to request queries? Thank you! ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [June 24, 2020, 11:57am UTC](https://discuss.elastic.co/t/unable-to-connect-my-java-application-to-the-elastic-stack-instance/238430/2 "2020-06-24T11:57:30Z")
I think you need to change: ``` String ELASTIC_SEARCH_ENDPOINT_URL = "https://92d5f385db294fb4b7ff335201d0a854.asia-northeast1.gcp.cloud.es.io"; ``` to ``` String ELASTIC_SEARCH_ENDPOINT_URL = "92d5f385db294fb4b7ff335201d0a854.asia-northeast1.gcp.cloud.es.io"; ``` Or use this form: > ---
**Author:** ![Ubeta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ubeta/32/70991_2.png) [@Ubeta](https://discuss.elastic.co/u/Ubeta)\ **Post date:** [June 25, 2020, 1:13am UTC](https://discuss.elastic.co/t/unable-to-connect-my-java-application-to-the-elastic-stack-instance/238430/3 "2020-06-25T01:13:03Z")
Hello dadoonet! Changing the endpoint url to discard the 'https://' portion worked! Thank you so much! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 23, 2020, 1:13am UTC](https://discuss.elastic.co/t/unable-to-connect-my-java-application-to-the-elastic-stack-instance/238430/4 "2020-07-23T01:13:09Z")
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