I am developing a Spring Cloud Eureka application for microservices. I want my services to connect to the configuration service through the first Eureka approach. Microservices are packaged in docker containers and deployed through dockers. Application compiled by:
myapp-service-registry : a service-to-service service implemented with Spring Cloud Eurekamyapp-config-service : a Spring Windows Configuration Service Servermyapp-service-test : an example of a microservice that should try to take its configuration data from a configuration service by connecting to it using the Eureka-first approach.
The connection to the configuration service fails, as described below. First of all, some configuration data:
Here is myapp-service-registry application.yml :
server: port: ${PORT:8761} eureka: client: registerWithEureka: false fetchRegistry: false server: waitTimeInMsWhenSyncEmpty: 0
Here is myapp-config-service application.yml :
server: port: ${MYAPP_CONFIG_SERVICE_PORT:8888} spring: cloud: config: server: git: uri: ${MYAPP_CONFIG_SERVICE_GIT_URI} config: name: myapp-config-service # eureka service registry client eureka: client: serviceUrl: defaultZone: http://${SERVICE_REGISTRY_HOST}:${SERVICE_REGISTRY_PORT}/eureka/ instance: preferIpAddress: true
The configuration server and client are initialized as configserver-eureka and eureka-first samples at https://github.com/spring-cloud-samples/tests :
myapp-config-service bootstrap.yml :
spring: application: name: myapp-config-service cloud: config: discovery: enabled: true
And myapp-service-test application.yml :
eureka: client: serviceUrl: defaultZone: http://${SERVICE_REGISTRY_HOST}:${SERVICE_REGISTRY_PORT}/eureka/ instance: preferIpAddress: true
And myapp-service-test bootstrap.yml :
spring: application: name: myapp-service-test cloud: config: discovery: enabled: true serviceId: myapp-config-service
The following is docker-compose.yml (the env variable is replaced with the actual values at startup):
myapp-service-registry: image: myapp/myapp-service-registry:0.0.1 ports: - ${EUREKA_PORT}:${EUREKA_PORT} # myapp-config-service myapp-config-service: image: myapp/myapp-config-service:0.0.1 volumes: - ${MYAPP_DATA_FOLDER}/config:/var/opt/myapp/config environment: MYAPP_CONFIG_SERVICE_PORT: ${MYAPP_CONFIG_SERVICE_PORT} SERVICE_REGISTRY_HOST: ${MYAPP_STAGING_IP} SERVICE_REGISTRY_PORT: ${EUREKA_PORT} MYAPP_CONFIG_SERVICE_GIT_URI: ${MYAPP_CONFIG_SERVICE_GIT_URI} ports: - ${MYAPP_CONFIG_SERVICE_PORT}:${MYAPP_CONFIG_SERVICE_PORT} # myapp-service-test myapp-service-test: image: myapp/myapp-service-test:0.0.1 environment: SERVICE_REGISTRY_HOST: ${MYAPP_STAGING_IP} SERVICE_REGISTRY_PORT: ${EUREKA_PORT} ports: - ${MYAPP_SERVICE_TEST_TWO_PORT}:8080
I can check if Eureka works by connecting the browser to http: // [... MACHINE-IP ...]: 8761 / and seeing the Eureka dashboard. Similarly, I test that the configuration service is running and responding to http: /// [... MACHINE-IP ...]: 8888 / myapp-config-service ; On the other hand, on the other hand, myapp-service-test fails to start with the following log:
-02-03 08:26:45.191 INFO 1 --- [ main] efstwo.TestServiceApplication : Starting TestServiceApplication v0.0.1 on b1bc37422027 with PID 1 (/app.jar started by root in /) 2016-02-03 08:26:45.223 INFO 1 --- [ main] efstwo.TestServiceApplication : No active profile set, falling back to default profiles: default 2016-02-03 08:26:45.448 INFO 1 --- [ main] scaAnnotationConfigApplicationContext : Refreshing org.spring framework.context.annotation.AnnotationConfigApplicationContext@ 4d97e82d: startup date [Wed Feb 03 08:26:45 UTC 2016]; root of context hierarchy 2016-02-03 08:26:46.382 INFO 1 --- [ main] faAutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring 2016-02-03 08:26:46.442 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'configurationPropertiesRebinderAutoConfiguration' of type [class org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$6b65138e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2016-02-03 08:26:47.089 INFO 1 --- [ main] oscneureka.InstanceInfoFactory : Setting initial instance status as: STARTING 2016-02-03 08:26:48.231 INFO 1 --- [ main] cndprovider.DiscoveryJerseyProvider : Using encoding codec LegacyJacksonJson 2016-02-03 08:26:48.237 INFO 1 --- [ main] cndprovider.DiscoveryJerseyProvider : Using decoding codec LegacyJacksonJson 2016-02-03 08:26:49.171 INFO 1 --- [ main] cndprovider.DiscoveryJerseyProvider : Using encoding codec LegacyJacksonJson 2016-02-03 08:26:49.171 INFO 1 --- [ main] cndprovider.DiscoveryJerseyProvider : Using decoding codec LegacyJacksonJson 2016-02-03 08:26:49.496 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Disable delta property : false 2016-02-03 08:26:49.497 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Single vip registry refresh property : null 2016-02-03 08:26:49.497 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Force full registry fetch : false 2016-02-03 08:26:49.498 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Application is null : false 2016-02-03 08:26:49.502 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Registered Applications size is zero : true 2016-02-03 08:26:49.503 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Application version is -1: true 2016-02-03 08:26:49.503 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server 2016-02-03 08:26:49.720 WARN 1 --- [ main] com.netflix.discovery.DiscoveryClient : Can't get a response from http://localhost:8761/eureka/apps/ <...> com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.jar!/:1.19] at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:123) ~[jersey-client-1.19.jar!/:1.19] at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.3.4.jar!/:1.3.4] <...> Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_66-internal] at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_66-internal] at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_66-internal] <...> 2016-02-03 08:26:49.747 ERROR 1 --- [ main] com.netflix.discovery.DiscoveryClient : Can't contact any eureka nodes - possibly a security group issue? com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused <...> 2016-02-03 08:26:49.770 ERROR 1 --- [ main] com.netflix.discovery.DiscoveryClient : DiscoveryClient_MYAPP-SERVICE-TEST/b1bc37422027:myapp-service-test - was unable to refresh its cache! status = java.net.ConnectException: Connection refused com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused <...> 2016-02-03 08:26:49.785 WARN 1 --- [ main] com.netflix.discovery.DiscoveryClient : Using default backup registry implementation which does not do anything. 2016-02-03 08:26:49.810 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Starting heartbeat executor: renew interval is: 10 2016-02-03 08:26:49.818 INFO 1 --- [ main] cndiscovery.InstanceInfoReplicator : InstanceInfoReplicator onDemand update allowed rate per min is 4 2016-02-03 08:26:50.443 WARN 1 --- [ main] lientConfigServiceBootstrapConfiguration : Could not locate configserver via discovery java.lang.RuntimeException: No matches for the virtual host name :myapp-config-service at com.netflix.discovery.DiscoveryClient.getNextServerFromEureka(DiscoveryClient.java:782) ~[eureka-client-1.3.4.jar!/:1.3.4] at org.springframework.cloud.netflix.config.DiscoveryClientConfigServiceBootstrapConfiguration.refresh(DiscoveryClientConfigServiceBootstrapConfiguration.java:71) [spring-cloud-netflix-core-1.1.0.M3.jar!/:1.1.0.M3] <...> 2016-02-03 08:26:50.470 INFO 1 --- [ main] efstwo.TestServiceApplication : Started TestServiceApplication in 7.101 seconds (JVM running for 9.329) . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.3.1.RELEASE) 2016-02-03 08:26:50.773 INFO 1 --- [ main] cccConfigServicePropertySourceLocator : Fetching config from server at: http://localhost:8888 2016-02-03 08:26:51.015 WARN 1 --- [ main] cccConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/myapp-service-test/default":Connection refused; nested exception is java.net.ConnectException: Connection refused <...> 2016-02-03 08:26:54.856 ERROR 1 --- [pool-5-thread-1] com.netflix.discovery.DiscoveryClient : Can't contact any eureka nodes - possibly a security group issue? com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused <...> 2016-02-03 08:26:57.272 WARN 1 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testTwoServiceController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: java.lang.String myapp.services.two.TestServiceController.message; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'message' in string value "${message}" 2016-02-03 08:26:57.281 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat 2016-02-03 08:26:57.299 ERROR 1 --- [ main] osboot.SpringApplication : Application startup failed
Please note that if I do not implement the Eureka-first approach (and install spring.cloud.config.uri directly in the bootstrap.yml service), the service registers with Eureka, finds the configuration server and works correctly (I see the registered service in the Eureka dashboard and I can verify that the configuration properties are read correctly).