Feign does not resolve name

Question

I am trying t call another service using Spring Cloud's Open Feign but here is the response I keep getting:

{
  "timestamp": 1579015052962,
  "status": 500,
  "error": "Internal Server Error",
  "message": "auth-service: Name or service not known executing GET http://auth-service/api/v1/auth",
  "path": "/api/v1/event"
}

Here's my code:

package com.eventmanager.events.client;

import com.eventmanager.events.client.mappings.Auth;
import com.eventmanager.events.config.CustomFeignClientConfig;
import com.eventmanager.events.responses.Response;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestHeader;

@FeignClient(name = "auth-service", configuration = CustomFeignClientConfig.class)
public interface AuthClient {
  @GetMapping("/api/v1/auth")
  public Response<Auth> getLoggedUser(@RequestHeader(value = "Authorization") String authorization);
}

I configured Feign to use the OkHttp client and I'm not sure if it's responsible for the error:

package com.eventmanager.events.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import feign.okhttp.OkHttpClient;

@Configuration
public class CustomFeignClientConfig {
  @Bean
  public OkHttpClient client() {
    return new OkHttpClient();
  }
}

have you added eureka.instance.hostname = in properties file — Pramod S. Nikam, Jan 14 '20 at 15:40
Do you have ribbon on the classpath? What version are you using? — spencergibb, Jan 18 '20 at 23:06
@spencergibb. I do not have Ribbon on the classpath. I'm using the Finchley.SR1 version. — King Einsteinet, Jan 22 '20 at 10:18
If you aren't using ribbon set the `url` property. Finchley is no longer supported. — spencergibb, Jan 24 '20 at 04:26

score 1 · Answer 1 · answered Aug 30 '20 at 18:20

1

If you are using Finchey.SR1, You can check this https://stackoverflow.com/a/52727544 There seems to be an issue with ContentPath in that cloud version.

answered Aug 30 '20 at 18:20

Grim42

49
1
11

score 1 · Answer 2 · answered Apr 07 '22 at 12:13

Guess I'm a little late to the party. The following dependency can be added to your pom.xml file. If you you have feign-okhttp dependency then you should be having this dependency by default.

<dependency>
    <groupId>com.squareup.okhttp3</groupId>
    <artifactId>okhttp</artifactId>
    <version>5.0.0-alpha.6</version>
</dependency>

Now instead of importing feign.okhttp.OkHttpClient; import okhttp3.OkHttpClient.

So your class should look like below.

package com.eventmanager.events.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import okhttp3.OkHttpClient;

@Configuration
public class CustomFeignClientConfig {
  @Bean
  public OkHttpClient client() {
    return new OkHttpClient();
  }
}

Also consider adding the below entry in your application.properties file. This will stop Feign from using the default http client.

feign.httpclient.enabled=false

You may refer to this post for more information

I am getting `Exception feign.RetryableException: service-name: Name or service not known executing POST` error. Any fix for this? — Shashank Shekher, Apr 11 '22 at 07:36
Are you using 'eureka' and 'okhttp3.OkHttpClient' @ShashankShekher? — Subhrajit Sadhukhan, Apr 11 '22 at 17:15

score 0 · Answer 3 · answered Jan 14 '20 at 16:46

0

May be because you have not specified base URL. for client & it is taking base URL as auth-service.

@FeignClient(name = "auth-service", configuration = CustomFeignClientConfig.class, url = "http://lcoalhost:8080")
public interface AuthClient {
  @GetMapping("/api/v1/auth")
  public Response<Auth> getLoggedUser(@RequestHeader(value = "Authorization") String authorization);
}

answered Jan 14 '20 at 16:46

Jaganath Kamble

506
2
10

1

Is there need for a base url? The service name should be enough since that works locally. – King Einsteinet Jan 18 '20 at 13:31

Feign does not resolve name

3 Answers3