Getting java.net.UnknownHostException: db-service" while calling db service - spring-cloud

Question

server
My stock-service client:
#Autowired
RestTemplate restTemplate;
ResponseEntity<List<String>> quoteResponse =
restTemplate.exchange("http://db-service/rest/db/" + userName,
HttpMethod.GET,
null,
new ParameterizedTypeReference<List<String>>() {}
);
Here db-service is registered service in eureka server.
Its working if i hit directly like
/* ResponseEntity<List<String>> quoteResponse =
restTemplate.exchange("http://localhost:8300/rest/db/" + userName,
HttpMethod.GET,
null,
new ParameterizedTypeReference<List<String>>() {}
);*/
#Configuration
public class Config {
#Bean
#LoadBalanced
public RestTemplate restTemplate() {
return new RestTemplate();
}
}

Answer 1

As far as I understand that db-service is your any micro-service and you want to send there request. You need to configure ribbon because RestTemplate doesn't understand db-service like host. You should add follow config:
db-service:
ribbon:
eureka:
enabled: false
listOfServers: localhost:8090
ServerListRefreshInterval: 15000
and maven dependency:
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</dependency>
or you could add Discovery service(Eureka) to your system and you don't need to describing listOfSerevers because ribbon will get all information from discovery service

Answer 2

Please try by using spring-cloud-starter-netflix-eureka-client.
And check the version of spring-cloud-dependencies along with spring-boot-starter-parent version.
spring-cloud-starter-netflix-eureka-client should resolve the issue