# Localhost:9200: nodename nor servname provided, or not known

**URL:** <https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173>\
**Category:** Elasticsearch\
**Created:** [June 18, 2019, 3:04am UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173 "2019-06-18T03:04:46Z")\
**Posts on this page:** 17\
**Page:** 1

<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 18, 2019, 3:04am UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/1 "2019-06-18T03:04:46Z")

</div>

I am running elastic search version 6.4 locally and my dependency for the spring boot application is implementation 'org.elasticsearch.client:elasticsearch-rest-high-level-client:6.4.0' . I am getting java.io.IOException: localhost:9200: nodename nor servname provided, or not known  
at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:948)  
at org.elasticsearch.client.RestClient.performRequest(RestClient.java:227)  
at org.elasticsearch.client.RestClient.performRequest(RestClient.java:272)  
.I tried localhost only also but still getting same problem. But when I am using same code but server elastic search I am getting having problem. Previously I am using elastic search transport. at that time there was no problem while connection but i upgrade to rest-high-level client ..I am facing problem ... Can some one help me.....

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<div class="post-metadata">

**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 18, 2019, 5:05am UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/2 "2019-06-18T05:05:32Z")

</div>

Please share your code and format it using `</>` icon as explained in [this guide](https://discuss.elastic.co/t/about-the-elasticsearch-category/21) and not the citation button. It will make your post more readable.

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 18, 2019, 12:32pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/3 "2019-06-18T12:32:11Z")

</div>

This is my elastic configuration class:

```
@Bean(destroyMethod = "close")
    public RestHighLevelClient client() {

        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost(elasticHost)));
        return client;

    }

```

and in my service class I am trying to check index is already exist or not using

```
public boolean checkIfIndexExists(String indexName) throws IOException {
        Response response = client.getLowLevelClient().performRequest("HEAD", "/" + indexName);
        int statusCode = response.getStatusLine().getStatusCode();
        return (statusCode != 404);
    }

```

Where same code is working on the server but not in the local.. where in local I am using elastic 6.4.2 and maven also the same version.

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<div class="post-metadata">

**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 18, 2019, 1:34pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/4 "2019-06-18T13:34:11Z")

</div>

Can you print debug the content of `elasticHost`?

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 18, 2019, 2:09pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/5 "2019-06-18T14:09:21Z")

</div>

> [@sneup](#):
>
> elasticHost

Hi Dadoonet,  
My elasticHost is localhost:9200.. which I am reading from YML

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<div class="post-metadata">

**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 18, 2019, 2:11pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/6 "2019-06-18T14:11:40Z")

</div>

Can you replace it with an IP address like `127.0.0.1`?

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 18, 2019, 2:20pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/7 "2019-06-18T14:20:03Z")

</div>

> [@dadoonet](#):
>
> 127.0.0.1

Yes I tried but still having same problem. previously when i use elastic transport (with transport code) it was working perfectly on the localhost:9200 port. But after changing with the above configuration for highlevel client I am facing problem on my local machine.

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<div class="post-metadata">

**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 18, 2019, 4:27pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/8 "2019-06-18T16:27:36Z")

</div>

Could you try this?

> <https://github.com/dadoonet/legacy-search/blob/01-direct/src/main/java/fr/pilato/demo/legacysearch/dao/ElasticsearchDao.java#L49>

I mean manually set the IP like:

```auto
new RestHighLevelClient(RestClient.builder(HttpHost.create("http://127.0.0.1:9200")));

```

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 18, 2019, 5:33pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/9 "2019-06-18T17:33:02Z")

</div>

Thank you for the response dodoonet. Still having the same problem. .. when I use the hardcoded value(HttpHost.create("[http://127.0.0.1:9200](http://127.0.0.1:9200)")) in configuration file getting this image error.

 ![24%20PM](https://us1.discourse-cdn.com/elastic/original/3X/4/9/49ca55321f3834911b7aee697bf7a9e13ea45138.jpeg)

But when I use restclient in the inline (as you suggested) I am able to connect to the localhost. that means it is successfully why ? But for the server connection I dont have to do that..

```
client = new RestHighLevelClient(RestClient.builder(HttpHost.create("http://127.0.0.1:9200")));
        Response response = client.getLowLevelClient().performRequest("HEAD", "/" + indexName);
        int statusCode = response.getStatusLine().getStatusCode();
```

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<div class="post-metadata">

**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 20, 2019, 1:25pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/10 "2019-06-20T13:25:50Z")

</div>

So when you read from a config file it does not work right?

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<div class="post-metadata">

**Author:** ![pokaleshrey](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pokaleshrey/32/48680_2.png) [@pokaleshrey](https://discuss.elastic.co/u/pokaleshrey)\
**Post date:** [June 20, 2019, 1:37pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/11 "2019-06-20T13:37:16Z")

</div>

Did you try using below while creating RestClient:

`new HttpHost("localhost", 9200, "http")`

instead of

`HttpHost.create("http://127.0.0.1:9200")`

This works for us in local and on server and everywhere.

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 21, 2019, 4:09pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/12 "2019-06-21T16:09:21Z")

</div>

Actually No @dadoonet , If that happens it should not get the value in the above screenshot. You see in the above image the value is coming from the config file.

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<div class="post-metadata">

**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 21, 2019, 5:10pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/13 "2019-06-21T17:10:09Z")

</div>

But you said you are successful in one case. Which one is it?

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 21, 2019, 8:14pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/14 "2019-06-21T20:14:58Z")

</div>

I said When I create a bean and @autowired that bean is not working for localhost/9200. But the same code with server elastic(AWS) search is working. And for the localhost if I write the code inside the same method like this

`client = new RestHighLevelClient(RestClient.builder(HttpHost.create("http://127.0.0.1:9200")));`

it is working. I am confuse why the localhost is not working while autowire the configuration class.

my configuration class is

@Configuration  
public class ElasticsearchConfig {

```
@Bean(destroyMethod = "close")
public RestHighLevelClient client() {

    RestHighLevelClient client = new RestHighLevelClient(
            RestClient.builder(new HttpHost("http://127.0.0.1:9200")));
    return client;

}

```

}

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<div class="post-metadata">

**Author:** ![sneup](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sneup/32/48265_2.png) [@sneup](https://discuss.elastic.co/u/sneup)\
**Post date:** [June 21, 2019, 8:23pm UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/15 "2019-06-21T20:23:40Z")

</div>

> [@pokaleshrey](#):
>
> new HttpHost("localhost", 9200, "http")

Thank you This way its working for localhost also!!!!

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<div class="post-metadata">

**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 22, 2019, 2:56am UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/16 "2019-06-22T02:56:36Z")

</div>

So is it solved?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 20, 2019, 2:56am UTC](https://discuss.elastic.co/t/localhost-nodename-nor-servname-provided-or-not-known/186173/17 "2019-07-20T02:56:41Z")

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