Problem with registering service in eureka - spring

Question

I have the following eureka server configuration
Pom.xml
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-parent</artifactId>
<version>Angel.SR6</version>
<relativePath />
</parent>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
This is the configuration of eureka client.
Pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.microservices</groupId>
<artifactId>account-service</artifactId>
<version>1.0</version>
<name>account-service</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<skipTests>false</skipTests>
<skipITs>${skipTests}</skipITs>
<skipUTs>${skipTests}</skipUTs>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<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.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>21.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
<version>2.2.6.RELEASE</version>
</dependency>
</dependencies>
Application.yml for eureka client:
eureka:
client:
serviceUrl:
default:
zone: http://user:pass#localhost:8761/eureka/
instance:
hostname: localhost
password: pass
security:
user:
username: user
password: pass
Eureka server starts normally.
However when I run eureka-client, this is the result of startup process.
On client side:
[WARN ] 2021-02-21 21:22:28 [DiscoveryClient-InstanceInfoReplicator-0] RetryableEurekaHttpClient - Request execution failure with status code 401; retrying on another server if available
[WARN ] 2021-02-21 21:22:28 [DiscoveryClient-InstanceInfoReplicator-0] DiscoveryClient - DiscoveryClient_ACCOUNT-SERVICE/localhost:account-service - registration failed Cannot execute request on any known server
com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
On server side:
2021-02-21 21:22:28.541 INFO 5208 --- [nio-8761-exec-1] o.s.b.a.audit.listener.AuditListener : AuditEvent [timestamp=Sun Feb 21 21:22:28 CET 2021, principal=anonymousUser, type=AUTHORIZATION_FAILURE, data={type=org.springframework.security.access.AccessDeniedException, message=Access is denied}]
What could be the issue that eureka client register process is not authorized with result 401, nevertheless I deliver proper credentials?

Answer 1

For Eureka to work, you need to put some configurations in place.
on your eureka server service you need to enable the Eureka server using the #EnableEurekaServer annotation, like bellow:
#SpringBootApplication
#EnableEurekaServer
public class NamingServerApplication {
public static void main(String[] args) {
SpringApplication.run(NamingServerApplication.class, args);
}
On your client you need to configure the application name in your application.properties something like:
spring.application.name=my-application
That should work! Don't forget to change your spring cloud version as well!