Restclient Caused by: java.net.UnknownHostException : HOST NAME

Question

i am trying to invoke rest call and have below rest high level client.

final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY,
                new UsernamePasswordCredentials("elastic", "cool"));
        client = new RestHighLevelClient(RestClient.builder(new HttpHost(HOST, PORT, SCHEMA))
                .setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
                    @Override
                    public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                        return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
                    }
                }));

i have host and port defined in application.properties file as below

#test/dev host elastic service url 
HOST.URL=http://go-test

#test/dev host port 
HOST.PORT=9200
  
SCHEMA=http

My bean property

@Value("${HOST.URL}")
private String HOST;

@Value("${HOST.PORT}")
private int PORT;

@Value("${SCHEMA}")
private String SCHEMA;

when i try to run i am getting below execption...

Caused by: java.net.UnknownHostException: http://go-test
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:907)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1302)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1255)
    at java.net.InetAddress.getAllByName(InetAddress.java:1171)
    at java.net.InetAddress.getAllByName(InetAddress.java:1105)

dont know what is causing the issue, when i try with ip, it is working perfectly. Same host name when i try in chrome browser, it is working fine.. getting response from bacekend rest api..

{
  "name" : "ip",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "q",
  "version" : {
    "number" : "7.9.3",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "c",
    "build_date" : "2020-10-16T10:36:16.141335Z",
    "build_snapshot" : false,
    "lucene_version" : "8.6.2",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

Are you sure the host url should be http:/go-test and not http://go-test? — Joachim Isaksson
– Joachim Isaksson, Commented Aug 18, 2021 at 5:10
You are not showing how your properties are mapped to the values you pass to the HttpHost constructor, but from the error message HOST.URL should just be the host name. — tgdavies
– tgdavies, Commented Aug 18, 2021 at 5:45
can do a ping to go-test from your machine? its not working and you know the ip address of the host then make a entry in the hosts file. — Nagaraju Chitimilla
– Nagaraju Chitimilla, Commented Aug 18, 2021 at 6:19

Tim Moore · Accepted Answer · 2021-08-18 07:26:02Z

1

This code is passing a URL to code that is expecting only a hostname.

Set HOST to go-test instead of http://go-test.

answered Aug 18, 2021 at 7:26

Tim Moore

9,5572 gold badges26 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Tim Moore Over a year ago

Could you edit the question then to reflect what you're trying now and the error that you're getting. If it's still UnknownHostException then that must be the wrong hostname.

Collectives™ on Stack Overflow

Restclient Caused by: java.net.UnknownHostException : HOST NAME

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related