I am following a tutorial for the service discovery with Eureka. I downloaded my spring projects from start.spring.io. I have a Eureka server and two clients. My Eureka server picks up both services and show it on the web interface but when I try to send a get request to a service using the service name, I get the unknown host error. Here is my Eureka server:
I have already tried everything described in eureka unknownHostException in service discovery, but nothing worked
@SpringBootApplication
@EnableEurekaServer
public class DiscoveryServerApplication {
public static void main(String[] args) {
SpringApplication.run(DiscoveryServerApplication.class, args);
}
}
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.12</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>io.javabrains</groupId>
<artifactId>discovery-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>discovery-server</name>
<description>Discovery Server</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>2021.0.7</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties:
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
movie-service-catalog:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.12</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>2021.0.7</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-parent</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties:
spring.application.name=movie-catalog-service
server.port=8081
@SpringBootApplication
@EnableEurekaClient
public class MovieCatalogServiceApplication {
@Bean
@LoadBalanced
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
public static void main(String[] args) {
SpringApplication.run(MovieCatalogServiceApplication.class, args);
}
}
@RestController
@RequestMapping("/catalog")
public class MovieCatalogResource {
@Autowired
private RestTemplate restTemplate;
@RequestMapping("/{userId}")
public List<CatalogItem> getCatalog(@PathVariable String userId){
RestTemplate restTemplate = new RestTemplate();
//get all rated movie IDs, movies user watched
UserRating ratings = restTemplate.getForObject("http://ratings-data-service/ratingsdata/users/" + userId, UserRating.class);
return ratings.getUserRating().stream().map(rating -> {
//For each movie ID, call movie info service and details
Movie movie = restTemplate.getForObject("http://movie-info-service/movies/" + rating.getMovieId(), Movie.class);
//put them together
return new CatalogItem(movie.getName(), "Test", rating.getRatings());
}
).collect(Collectors.toList());
}
}
ratings-data-service conf is same as movie-catalog-service enter image description here
