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Service Discovery Demo - Adding Eureka Server
Eureka is a REST based server that is used for storing the information about microservices and load balancing. Eureka server can be created as a Spring Boot application using Spring Cloud components.
Create "discovery" Eureka Server microservice (module)
Right click on the project and create a new module "discovery" similar to "order" and "payment" modules created earlier.
EurekaServerApplication :
Note the @EnableEurekaServer annotation to make this Spring Boot application a Eureka Server.
package com.springcloud.servicediscovery.eurekaserver;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication{
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
pom.xml :
Here we are manually adding the dependency of eureka-server.
<?xml version="1.0" encoding="UTF-8"?>
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>servicediscovery</artifactId>
<groupId>com.springcloud</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>discovery</artifactId>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
</dependencies>
</project>
application.yml
Here we are setting the property to notify it is not a client rather a server.
spring:
application:
name: eureka-discovery-server
server:
port: 9003
eureka:
client:
fetch-registry: false
register-with-eureka: false
banner.txt
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`. `-. | .-. : | .--' \ `' / ,--. | .--' | .-. : | | \ : ,--. ( .-' | .--' | .-. | \ `' / | .-. : | .--' \ ' /
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`-----' `----' `--' `--' `--' `---' `----' `-------' `--' `----' `---' `---' `--' `----' `--' .-' /
`---'
When the application is run, Eureka service discovery dashboard can be viewed from the application port
"C:\Program Files\Java\jdk-11.0.15\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.2\lib\idea_rt.jar=62243:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.2\bin" -Dfile.encoding=UTF-8 -classpath 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\jakarta.activation-1.2.2.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-data-jpa\2.7.5\spring-boot-starter-data-jpa-2.7.5.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-aop\2.7.5\spring-boot-starter-aop-2.7.5.jar;D:\.m2\repository\org\springframework\spring-aop\5.3.23\spring-aop-5.3.23.jar;D:\.m2\repository\org\aspectj\aspectjweaver\1.9.7\aspectjweaver-1.9.7.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-jdbc\2.7.5\spring-boot-starter-jdbc-2.7.5.jar;D:\.m2\repository\com\zaxxer\HikariCP\4.0.3\HikariCP-4.0.3.jar;D:\.m2\repository\org\springframework\spring-jdbc\5.3.23\spring-jdbc-5.3.23.jar;D:\.m2\repository\jakarta\transaction\jakarta.transaction-api\1.3.3\jakarta.transaction-api-1.3.3.jar;D:\.m2\repository\jakarta\persistence\jakarta.persistence-api\2.2.3\jakarta.persistence-api-2.2.3.jar;D:\.m2\repository\org\hibernate\hibernate-core\5.6.12.Final\hibernate-core-5.6.12.Final.jar;D:\.m2\repository\org\jboss\logging\jboss-logging\3.4.3.Final\jboss-logging-3.4.3.Final.jar;D:\.m2\repository\net\bytebuddy\byte-buddy\1.12.18\byte-buddy-1.12.18.jar;D:\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;D:\.m2\repository\org\jboss\jandex\2.4.2.Final\jandex-2.4.2.Final.jar;D:\.m2\repository\com\fasterxml\classmate\1.5.1\classmate-1.5.1.jar;D:\.m2\repository\org\hibernate\common\hibernate-commons-annotations\5.1.2.Final\hibernate-commons-annotations-5.1.2.Final.jar;D:\.m2\repository\org\springframework\data\spring-data-jpa\2.7.5\spring-data-jpa-2.7.5.jar;D:\.m2\repository\org\springframework\data\spring-data-commons\2.7.5\spring-data-commons-2.7.5.jar;D:\.m2\repository\org\springframework\spring-orm\5.3.23\spring-orm-5.3.23.jar;D:\.m2\repository\org\springframework\spring-context\5.3.23\spring-context-5.3.23.jar;D:\.m2\repository\org\springframework\spring-tx\5.3.23\spring-tx-5.3.23.jar;D:\.m2\repository\org\springframework\spring-beans\5.3.23\spring-beans-5.3.23.jar;D:\.m2\repository\org\slf4j\slf4j-api\1.7.36\slf4j-api-1.7.36.jar;D:\.m2\repository\org\springframework\spring-aspects\5.3.23\spring-aspects-5.3.23.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.7.5\spring-boot-starter-web-2.7.5.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter\2.7.5\spring-boot-starter-2.7.5.jar;D:\.m2\repository\org\springframework\boot\spring-boot\2.7.5\spring-boot-2.7.5.jar;D:\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.7.5\spring-boot-autoconfigure-2.7.5.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.7.5\spring-boot-starter-logging-2.7.5.jar;D:\.m2\repository\ch\qos\logback\logback-classic\1.2.11\logback-classic-1.2.11.jar;D:\.m2\repository\ch\qos\logback\logback-core\1.2.11\logback-core-1.2.11.jar;D:\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.17.2\log4j-to-slf4j-2.17.2.jar;D:\.m2\repository\org\apache\logging\log4j\log4j-api\2.17.2\log4j-api-2.17.2.jar;D:\.m2\repository\org\slf4j\jul-to-slf4j\1.7.36\jul-to-slf4j-1.7.36.jar;D:\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;D:\.m2\repository\org\yaml\snakeyaml\1.30\snakeyaml-1.30.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.7.5\spring-boot-starter-json-2.7.5.jar;D:\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.13.4.2\jackson-databind-2.13.4.2.jar;D:\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.13.4\jackson-datatype-jdk8-2.13.4.jar;D:\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.13.4\jackson-datatype-jsr310-2.13.4.jar;D:\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.13.4\jackson-module-parameter-names-2.13.4.jar;D:\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.7.5\spring-boot-starter-tomcat-2.7.5.jar;D:\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.68\tomcat-embed-core-9.0.68.jar;D:\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.68\tomcat-embed-el-9.0.68.jar;D:\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.68\tomcat-embed-websocket-9.0.68.jar;D:\.m2\repository\org\springframework\spring-web\5.3.23\spring-web-5.3.23.jar;D:\.m2\repository\org\springframework\spring-webmvc\5.3.23\spring-webmvc-5.3.23.jar;D:\.m2\repository\org\springframework\spring-expression\5.3.23\spring-expression-5.3.23.jar;D:\.m2\repository\org\springframework\cloud\spring-cloud-starter\3.1.4\spring-cloud-starter-3.1.4.jar;D:\.m2\repository\org\springframework\cloud\spring-cloud-context\3.1.4\spring-cloud-context-3.1.4.jar;D:\.m2\repository\org\springframework\security\spring-security-crypto\5.7.4\spring-security-crypto-5.7.4.jar;D:\.m2\repository\org\springframework\cloud\spring-cloud-commons\3.1.4\spring-cloud-commons-3.1.4.jar;D:\.m2\repository\org\springframework\security\spring-security-rsa\1.0.11.RELEASE\spring-security-rsa-1.0.11.RELEASE.jar;D:\.m2\repository\org\bouncycastle\bcpkix-jdk15on\1.69\bcpkix-jdk15on-1.69.jar;D:\.m2\repository\org\bouncycastle\bcprov-jdk15on\1.69\bcprov-jdk15on-1.69.jar;D:\.m2\repository\org\bouncycastle\bcutil-jdk15on\1.69\bcutil-jdk15on-1.69.jar;D:\.m2\repository\com\h2database\h2\2.1.214\h2-2.1.214.jar;D:\.m2\repository\org\projectlombok\lombok\1.18.24\lombok-1.18.24.jar;D:\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.3\jakarta.xml.bind-api-2.3.3.jar;D:\.m2\repository\jakarta\activation\jakarta.activation-api\1.2.2\jakarta.activation-api-1.2.2.jar;D:\.m2\repository\org\springframework\spring-core\5.3.23\spring-core-5.3.23.jar;D:\.m2\repository\org\springframework\spring-jcl\5.3.23\spring-jcl-5.3.23.jar com.springcloud.servicediscovery.eurekaserver.EurekaServerApplication ,---. ,--. ,------. ,--.' .-' ,---. ,--.--. ,--. ,--. `--' ,---. ,---. | .-. \ `--' ,---. ,---. ,---. ,--. ,--. ,---. ,--.--. ,--. ,--.`. `-. | .-. : | .--' \ `' / ,--. | .--' | .-. : | | \ : ,--. ( .-' | .--' | .-. | \ `' / | .-. : | .--' \ ' /.-' | \ --. | | \ / | | \ `--. \ --. | '--' / | | .-' `) \ `--. ' '-' ' \ / \ --. | | \ '`-----' `----' `--' `--' `--' `---' `----' `-------' `--' `----' `---' `---' `--' `----' `--' .-' / `---'2022-10-26 20:59:21.732 INFO 18824 --- [ main] c.s.s.e.EurekaServerApplication : Starting EurekaServerApplication using Java 11.0.15 on sm15 with PID 18824 (C:\Users\mail2\Downloads\servicediscovery\discovery\target\classes started by mail2 in C:\Users\mail2\Downloads\servicediscovery)2022-10-26 20:59:21.740 INFO 18824 --- [ main] c.s.s.e.EurekaServerApplication : No active profile set, falling back to 1 default profile: "default"2022-10-26 20:59:23.531 INFO 18824 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.2022-10-26 20:59:23.556 INFO 18824 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 7 ms. Found 0 JPA repository interfaces.2022-10-26 20:59:24.080 INFO 18824 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=8415471e-e020-322b-98af-352408273e112022-10-26 20:59:25.485 INFO 18824 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 9003 (http)2022-10-26 20:59:25.486 INFO 18824 --- [ main] o.a.catalina.core.AprLifecycleListener : An older version [1.2.28] of the Apache Tomcat Native library is installed, while Tomcat recommends a minimum version of [1.2.30]2022-10-26 20:59:25.486 INFO 18824 --- [ main] o.a.catalina.core.AprLifecycleListener : Loaded Apache Tomcat Native library [1.2.28] using APR version [1.7.0].2022-10-26 20:59:25.486 INFO 18824 --- [ main] o.a.catalina.core.AprLifecycleListener : APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true], UDS [true].2022-10-26 20:59:25.486 INFO 18824 --- [ main] o.a.catalina.core.AprLifecycleListener : APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]2022-10-26 20:59:25.504 INFO 18824 --- [ main] o.a.catalina.core.AprLifecycleListener : OpenSSL successfully initialized [OpenSSL 1.1.1k 25 Mar 2021]2022-10-26 20:59:25.522 INFO 18824 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]2022-10-26 20:59:25.522 INFO 18824 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.68]2022-10-26 20:59:25.766 INFO 18824 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext2022-10-26 20:59:25.766 INFO 18824 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3932 ms2022-10-26 20:59:26.565 INFO 18824 --- [ main] c.s.j.s.i.a.WebApplicationImpl : Initiating Jersey application, version 'Jersey: 1.19.4 05/24/2017 03:20 PM'2022-10-26 20:59:26.658 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using JSON encoding codec LegacyJacksonJson2022-10-26 20:59:26.661 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using JSON decoding codec LegacyJacksonJson2022-10-26 20:59:26.901 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using XML encoding codec XStreamXml2022-10-26 20:59:26.901 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using XML decoding codec XStreamXml2022-10-26 20:59:27.581 INFO 18824 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...2022-10-26 20:59:27.972 INFO 18824 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.2022-10-26 20:59:28.091 INFO 18824 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]2022-10-26 20:59:28.232 INFO 18824 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.6.12.Final2022-10-26 20:59:28.686 INFO 18824 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}2022-10-26 20:59:28.906 INFO 18824 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect2022-10-26 20:59:29.221 INFO 18824 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]2022-10-26 20:59:29.233 INFO 18824 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'2022-10-26 20:59:29.295 WARN 18824 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning2022-10-26 20:59:30.972 INFO 18824 --- [ main] DiscoveryClientOptionalArgsConfiguration : Eureka HTTP Client uses Jersey2022-10-26 20:59:31.134 WARN 18824 --- [ main] iguration$LoadBalancerCaffeineWarnLogger : Spring Cloud LoadBalancer is currently working with the default cache. While this cache implementation is useful for development and tests, it's recommended to use Caffeine cache in production.You can switch to using Caffeine cache, by adding it and org.springframework.cache.caffeine.CaffeineCacheManager to the classpath.2022-10-26 20:59:31.164 INFO 18824 --- [ main] o.s.c.n.eureka.InstanceInfoFactory : Setting initial instance status as: STARTING2022-10-26 20:59:31.239 INFO 18824 --- [ main] com.netflix.discovery.DiscoveryClient : Initializing Eureka in region us-east-12022-10-26 20:59:31.240 INFO 18824 --- [ main] com.netflix.discovery.DiscoveryClient : Client configured to neither register nor query for data.2022-10-26 20:59:31.260 INFO 18824 --- [ main] com.netflix.discovery.DiscoveryClient : Discovery Client initialized at timestamp 1666832371254 with initial instances count: 02022-10-26 20:59:31.318 INFO 18824 --- [ main] c.n.eureka.DefaultEurekaServerContext : Initializing ...2022-10-26 20:59:31.322 INFO 18824 --- [ main] c.n.eureka.cluster.PeerEurekaNodes : Adding new peer nodes [http://localhost:8761/eureka/]2022-10-26 20:59:31.645 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using JSON encoding codec LegacyJacksonJson2022-10-26 20:59:31.646 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using JSON decoding codec LegacyJacksonJson2022-10-26 20:59:31.646 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using XML encoding codec XStreamXml2022-10-26 20:59:31.646 INFO 18824 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using XML decoding codec XStreamXml2022-10-26 20:59:31.798 INFO 18824 --- [ main] c.n.eureka.cluster.PeerEurekaNodes : Replica node URL: http://localhost:8761/eureka/2022-10-26 20:59:31.817 INFO 18824 --- [ main] c.n.e.registry.AbstractInstanceRegistry : Finished initializing remote region registries. All known remote regions: []2022-10-26 20:59:31.819 INFO 18824 --- [ main] c.n.eureka.DefaultEurekaServerContext : Initialized2022-10-26 20:59:31.835 INFO 18824 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 1 endpoint(s) beneath base path '/actuator'2022-10-26 20:59:31.876 INFO 18824 --- [ main] o.s.c.n.e.s.EurekaServiceRegistry : Registering application EUREKA-DISCOVERY-SERVER with eureka with status UP2022-10-26 20:59:31.896 INFO 18824 --- [ Thread-9] o.s.c.n.e.server.EurekaServerBootstrap : isAws returned false2022-10-26 20:59:31.897 INFO 18824 --- [ Thread-9] o.s.c.n.e.server.EurekaServerBootstrap : Initialized server context2022-10-26 20:59:31.897 INFO 18824 --- [ Thread-9] c.n.e.r.PeerAwareInstanceRegistryImpl : Got 1 instances from neighboring DS node2022-10-26 20:59:31.897 INFO 18824 --- [ Thread-9] c.n.e.r.PeerAwareInstanceRegistryImpl : Renew threshold is: 12022-10-26 20:59:31.898 INFO 18824 --- [ Thread-9] c.n.e.r.PeerAwareInstanceRegistryImpl : Changing status to UP2022-10-26 20:59:31.911 INFO 18824 --- [ Thread-9] e.s.EurekaServerInitializerConfiguration : Started Eureka Server2022-10-26 20:59:31.917 INFO 18824 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 9003 (http) with context path ''2022-10-26 20:59:31.918 INFO 18824 --- [ main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 90032022-10-26 20:59:32.377 INFO 18824 --- [ main] c.s.s.e.EurekaServerApplication : Started EurekaServerApplication in 11.922 seconds (JVM running for 13.0)2022-10-26 20:59:48.307 INFO 18824 --- [nio-9003-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'2022-10-26 20:59:48.308 INFO 18824 --- [nio-9003-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'2022-10-26 20:59:48.310 INFO 18824 --- [nio-9003-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 2 ms2022-10-26 21:00:31.913 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 0ms2022-10-26 21:01:31.916 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 2ms2022-10-26 21:02:31.917 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 0ms2022-10-26 21:03:31.932 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 15ms2022-10-26 21:04:31.932 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 0ms2022-10-26 21:05:31.946 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 14ms2022-10-26 21:06:31.955 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 8ms2022-10-26 21:07:31.969 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 13ms2022-10-26 21:08:31.972 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 2ms2022-10-26 21:09:31.980 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 7ms2022-10-26 21:10:31.986 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 6ms2022-10-26 21:11:31.994 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 7ms2022-10-26 21:12:31.995 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 1ms2022-10-26 21:13:31.995 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 0ms2022-10-26 21:14:31.828 INFO 18824 --- [hresholdUpdater] c.n.e.r.PeerAwareInstanceRegistryImpl : Current renewal threshold is : 12022-10-26 21:14:32.003 INFO 18824 --- [a-EvictionTimer] c.n.e.registry.AbstractInstanceRegistry : Running the evict task with compensationTime 7ms http://localhost:9003/
Currently the dashboard is showing no instance registered. We are now going to register the "order" and "payment" service as the Eureka clients.
Register Eureka Clients
Add eureka client dependency in the POM files of services "order" and "payment"
pom.xml (order service)
<?xml version="1.0" encoding="UTF-8"?>
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>servicediscovery</artifactId>
<groupId>com.springcloud</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>order</artifactId>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
</project>
pom.xml (payment service)
<?xml version="1.0" encoding="UTF-8"?>
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>servicediscovery</artifactId>
<groupId>com.springcloud</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>paymnt</artifactId>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
</project>
In the application.yml file add Eureka client properties for both "order" and "payment"
application.yml (for order)
server:
port: 9001
spring:
application:
name: order-service
h2:
console:
enabled: true
eureka:
client:
service-url:
defaultZone: http://localhost:9003/eureka
fetch-registry: true
register-with-eureka: true
instance:
hostname: localhost
application.yml (for payment)
server:
port: 9002
spring:
application:
name: payment-service
h2:
console:
enabled: true
eureka:
client:
service-url:
defaultZone: http://localhost:9003/eureka
fetch-registry: true
register-with-eureka: true
instance:
hostname: localhost
Add @EnableEurekaClient annotation in the Spring Boot class of both the services.
OrderApplication.java
package com.springcloud.servicediscovery.order;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@EnableEurekaClient
@SpringBootApplication
public class OrderApplication {
public static void main(String[] args) {
SpringApplication.run(OrderApplication.class, args);
}
}
PaymentApplication.java
package com.springcloud.servicediscovery.paymnt;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@EnableEurekaClient
@SpringBootApplication
public class PaymentApplication {
public static void main(String[] args) {
SpringApplication.run(PaymentApplication.class, args);
}
}
Restart the order and payment applications. They should now get registered with the Eureka server and show up on the dashboard:
Source code:
https://github.com/it-code-lab/spring-cloud-servicediscovery
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