Lightrun
question-mark
Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

LoadBalanced doesn't work

See original GitHub issue

load-balanced doesn’t work.

This is my gateway’s application.yml:

server:
  port: 8011
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/
  instance:
      leaseRenewalIntervalInSeconds: 10
      leaseExpirationDurationInSeconds: 30
spring:
  application:
    name: gateway
logging:
  level:
    org.springframework.cloud.gateway: TRACE
    org.springframework.http.server.reactive: DEBUG
    org.springframework.web.reactive: DEBUG
    reactor.ipc.netty: DEBUG

gateway’s routes code:

@Configuration
public class AutoRoutes {

    @Bean
    public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
        return builder.routes()
                .route(f -> f.path("/user/**")
                        .uri("lb://user_service"))
                .build();
    }
}

gateway’s bootstrap code:

@SpringBootApplication
@EnableEurekaClient
@EnableDiscoveryClient
@EnableAutoConfiguration
public class GatewayApplication {

	public static void main(String[] args) {
		SpringApplication.run(GatewayApplication.class, args);
	}

	@Bean
	public RouteDefinitionLocator discoveryClientRouteDefinitionLocator(DiscoveryClient discoveryClient,DiscoveryLocatorProperties properties) {
		return new DiscoveryClientRouteDefinitionLocator(discoveryClient,properties);
	}

}

This is my application’s application.yml:

server:
  port: 8012
spring:
  application:
    name: user_service
eureka:
  client:
    service-url:
      defaultZone: http://192.168.8.89:8761/eureka/
ribbon:
   ReadTimeout: 60000
   ConnectTimeout: 60000
   OkToRetryOnAllOperations: false
   MaxAutoRetries: 0
   MaxAutoRetriesNextServer: 1

application’s code:

@RestController
public class UserController {
    private Logger logger = LoggerFactory.getLogger(UserController.class);
    @GetMapping("/user/hello")
    public Mono<String> hello(){
        logger.info("hello");
        return Mono.just("<h1>Hello World!</h1>");
    }
}

application’s bootstrap code:

@SpringBootApplication
@EnableEurekaClient
@RibbonClient(name = "user_service")
public class UserApplication {

	public static void main(String[] args) {
		SpringApplication.run(UserApplication.class, args);
	}
}

I access http://127.0.0.1:8011/user/hello , I get this execption:

org.springframework.cloud.gateway.support.NotFoundException: Unable to find instance for 127.0.0.1
	at org.springframework.cloud.gateway.filter.LoadBalancerClientFilter.filter(LoadBalancerClientFilter.java:72) ~[spring-cloud-gateway-core-2.0.0.BUILD-20180521.010532-2492.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.cloud.gateway.handler.FilteringWebHandler$GatewayFilterAdapter.filter(FilteringWebHandler.java:133) ~[spring-cloud-gateway-core-2.0.0.BUILD-20180521.010532-2492.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.cloud.gateway.filter.OrderedGatewayFilter.filter(OrderedGatewayFilter.java:44) ~[spring-cloud-gateway-core-2.0.0.BUILD-20180521.010532-2492.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.cloud.gateway.handler.FilteringWebHandler$DefaultGatewayFilterChain.lambda$filter$0(FilteringWebHandler.java:115) ~[spring-cloud-gateway-core-2.0.0.BUILD-20180521.010532-2492.jar:2.0.0.BUILD-SNAPSHOT]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:167) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:167) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:271) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:803) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1080) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:144) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFilter$FilterSubscriber.onNext(FluxFilter.java:97) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxDematerialize$DematerializeSubscriber.onNext(FluxDematerialize.java:114) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxDematerialize$DematerializeSubscriber.onNext(FluxDematerialize.java:42) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.drainAsync(FluxFlattenIterable.java:391) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.drain(FluxFlattenIterable.java:633) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.onNext(FluxFlattenIterable.java:238) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onNext(FluxPeekFuseable.java:179) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1065) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoCollectList$MonoBufferAllSubscriber.onComplete(MonoCollectList.java:117) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.DrainUtils.postCompleteDrain(DrainUtils.java:131) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.DrainUtils.postComplete(DrainUtils.java:186) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxMaterialize$MaterializeSubscriber.onComplete(FluxMaterialize.java:134) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.drainAsync(FluxFlattenIterable.java:321) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.drain(FluxFlattenIterable.java:633) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.onComplete(FluxFlattenIterable.java:255) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onComplete(FluxMapFuseable.java:138) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1067) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoCollectList$MonoBufferAllSubscriber.onComplete(MonoCollectList.java:117) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:773) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:543) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.drain(FluxFlatMap.java:523) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.onComplete(FluxFlatMap.java:409) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:254) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:190) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.onSubscribe(FluxFlatMap.java:332) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:128) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:61) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFlatMap.subscribe(FluxFlatMap.java:97) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoCollectList.subscribe(MonoCollectList.java:59) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlattenIterable.subscribe(MonoFlattenIterable.java:101) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxMaterialize.subscribe(FluxMaterialize.java:40) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoCollectList.subscribe(MonoCollectList.java:59) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:74) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlattenIterable.subscribe(MonoFlattenIterable.java:101) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxDematerialize.subscribe(FluxDematerialize.java:39) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:54) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxFilter.subscribe(FluxFilter.java:52) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:55) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:55) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:418) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:210) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:128) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:61) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:167) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:70) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.core.publisher.MonoPeekTerminal.subscribe(MonoPeekTerminal.java:61) ~[reactor-core-3.1.7.RELEASE.jar:3.1.7.RELEASE]
	at reactor.ipc.netty.channel.ChannelOperations.applyHandler(ChannelOperations.java:380) ~[reactor-netty-0.7.7.RELEASE.jar:0.7.7.RELEASE]
	at reactor.ipc.netty.http.server.HttpServerOperations.onHandlerStart(HttpServerOperations.java:397) ~[reactor-netty-0.7.7.RELEASE.jar:0.7.7.RELEASE]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[netty-common-4.1.24.Final.jar:4.1.24.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) ~[netty-common-4.1.24.Final.jar:4.1.24.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) ~[netty-transport-4.1.24.Final.jar:4.1.24.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) ~[netty-common-4.1.24.Final.jar:4.1.24.Final]
	at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_144]

@mkheck @spencergibb @fifthposition

Issue Analytics

  • State:closed
  • Created 5 years ago
  • Comments:6 (3 by maintainers)

github_iconTop GitHub Comments

4reactions
esselcukcommented, Aug 1, 2018

You cannot use underscore in route names. .route(f -> f.path("/user/**").uri("lb://user_service"))

0reactions
spencergibbcommented, Feb 11, 2019

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.

Read more comments on GitHub >

github_iconTop Results From Across the Web

Load balancer does not have available server for client
After doing research, and with help of @Bloodysock, I found that I was missing registration of remote server in 'client-app' micro-service.
Read more >
Troubleshoot your Application Load Balancers
Troubleshoot issues that you might encounter with your Application Load Balancer.
Read more >
LoadBalanced RestTemplate does not work well ... - GitHub
Hello, from mvnrepository and spring-cloud-netflix, the dependency of spring-cloud-starter-netflix-eureka-ribbon is not found, do you mean ...
Read more >
Web Page Does Not Load When Load Balanced Through ...
Users getting an error "Page cannot be displayed" while accessing the root page of the web server through the NetScaler load balancing VIP....
Read more >
Troubleshoot Azure Load Balancer backend traffic responses
Cause 1: A load balancer backend pool VM isn't listening on the data port. If a VM doesn't respond to the data traffic,...
Read more >

github_iconTop Related Medium Post

No results found

github_iconTop Related StackOverflow Question

No results found

github_iconTroubleshoot Live Code

Lightrun enables developers to add logs, metrics and snapshots to live code - no restarts or redeploys required.
Start Free

github_iconTop Related Reddit Thread

No results found

github_iconTop Related Hackernoon Post

No results found

github_iconTop Related Tweet

No results found

github_iconTop Related Dev.to Post

No results found

github_iconTop Related Hashnode Post

No results found
Previous page

"Status and headers already sent" when route websocket

Next page

Gateway throws HystrixRuntimeException "command executed multiple times"