bensq2 opened a new issue #398: URL: https://github.com/apache/dubbo-samples/issues/398
kubenetes-dns-sample配置metaserver后，provider可以正常运行，但是consumer无法正常运行 版本号： ``` zookeeper: 2.2.0 dubbo: 3.0.2.1 dubbo-metadata-report-zookeeper: 3.0.2.1 kubernetes: 1.20.1 ``` provider配置文件config.properties： ``` dubbo.application.name=kubernetes-dns-demo-provider dubbo.registry.address=dns://kube-dns.kube-system.svc.cluster.local:53?registry-type=service&duplicate=false&addressSuffix=.dubbo-demo.svc.cluster.local. dubbo.protocol.name=dubbo dubbo.protocol.port=20880 dubbo.application.qosEnable=true dubbo.application.qosAcceptForeignIp=true dubbo.metadata-report.address=zookeeper://127.0.0.1:2181 dubbo.metadata-report.retry-times=23 dubbo.metadata-report.retry-period=4590 dubbo.metadata-report.cycle-report=false ``` consumer配置文件： ``` dubbo.application.name=kubernetes-dns-demo-consumer dubbo.registry.address=dns://kube-dns.kube-system.svc.cluster.local:53?registry-type=service&duplicate=false&addressSuffix=.dubbo-demo.svc.cluster.local. dubbo.consumer.timeout=3000 dubbo.application.qosEnable=true dubbo.application.qosAcceptForeignIp=true dubbo.application.qosPort=33333 dubbo.metadata-report.address=zookeeper://127.0.0.1:2181 dubbo.metadata-report.retry-times=23 dubbo.metadata-report.retry-period=4590 dubbo.metadata-report.cycle-report=false ``` consumer 日志错误信息： ``` [01/12/21 02:29:56:056 UTC] main INFO annotation.ReferenceAnnotationBeanPostProcessor: class org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor was destroying! [01/12/21 02:29:56:056 UTC] main INFO context.DubboConfigBeanInitializer: loading dubbo config beans ... [01/12/21 02:29:56:056 UTC] main INFO context.DubboConfigBeanInitializer: dubbo config beans are loaded. [01/12/21 02:29:56:056 UTC] main INFO context.ConfigManager: [DUBBO] Dubbo config mode: STRICT, ignore duplicated interface: false, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:56:056 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] No value is configured in the registry, the DynamicConfigurationFactory extension[name : dns] does not support as the config center, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:56:056 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] The registry[<dubbo:registry address="dns://kube-dns.kube-system.svc.cluster.local:53?registry-type=service&duplicate=false&addressSuffix=.dubbo-demo.svc.cluster.local." protocol="dns" port="53" />] will be not used as the config center, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. [01/12/21 02:29:57:057 UTC] main INFO zookeeper.ZookeeperTransporter: [DUBBO] No valid zookeeper client found from cache, therefore create a new client for url. zookeeper://119.191.58.33:2181/org.apache.dubbo.metadata.report.MetadataReport?application=kubernetes-dns-demo-consumer&cycle-report=false&port=2181&protocol=zookeeper&retry-period=4590&retry-times=23, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] Curator-ConnectionStateManager-0 INFO curator.CuratorZookeeperClient: [DUBBO] Curator zookeeper client instance initiated successfully, session id is 17bf4ab9f01119f, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] DubboBootstrap has been initialized!, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] main INFO reference.ReferenceCreator: The configBean[type:ReferenceConfig] has been built. [01/12/21 02:29:57:057 UTC] main INFO bootstrap.DubboBootstrap: [DUBBO] DubboBootstrap is starting..., dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] main INFO server.Server: [DUBBO] qos-server bind localhost:33333, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] main WARN migration.MigrationRuleListener: [DUBBO] Using default configuration rule because config center is not configured!, dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] main INFO metadata.MetadataServiceNameMapping: [DUBBO] org.apache.dubbo.samples.api.GreetingService mapping to [kubernetes-dns-demo-provider1, kubernetes-dns-demo-provider] instructed by remote metadata center., dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 [01/12/21 02:29:57:057 UTC] main WARN metadata.StandardMetadataServiceURLBuilder: [DUBBO] Metadata Service Port is not provided, since DNS is not able to negotiate the metadata port between Provider and Consumer, will try to use instance port as the default metadata port., dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 Exception in thread "main" org.apache.dubbo.rpc.RpcException: Fail to create remoting client for service(dubbo://10.244.12.52:20880/org.apache.dubbo.metadata.MetadataService?codec=dubbo&getAndListenInstanceMetadata.1.callback=true&group=kubernetes-dns-demo-provider&heartbeat=60000&reconnect=false&side=consumer&timeout=5000&version=1.0.0): client(url: dubbo://10.244.12.52:20880/org.apache.dubbo.metadata.MetadataService?codec=dubbo&getAndListenInstanceMetadata.1.callback=true&group=kubernetes-dns-demo-provider&heartbeat=60000&reconnect=false&side=consumer&timeout=5000&version=1.0.0) failed to connect to server /10.244.12.52:20880, error message is:Connection refused: /10.244.12.52:20880 at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.initClient(DubboProtocol.java:625) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.buildReferenceCountExchangeClient(DubboProtocol.java:589) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.buildReferenceCountExchangeClientList(DubboProtocol.java:576) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.getSharedClient(DubboProtocol.java:501) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.getClients(DubboProtocol.java:433) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.protocolBindingRefer(DubboProtocol.java:410) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.refer(DubboProtocol.java:402) at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:77) at org.apache.dubbo.rpc.cluster.filter.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:70) at org.apache.dubbo.rpc.protocol.ProtocolSerializationWrapper.refer(ProtocolSerializationWrapper.java:51) at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:75) at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java) at org.apache.dubbo.registry.client.metadata.MetadataUtils.referProxy(MetadataUtils.java:141) at org.apache.dubbo.registry.client.metadata.MetadataUtils.lambda$getMetadataServiceProxy$1(MetadataUtils.java:98) at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) at org.apache.dubbo.registry.client.metadata.MetadataUtils.getMetadataServiceProxy(MetadataUtils.java:98) at org.apache.dubbo.registry.client.SelfHostMetaServiceDiscovery.fillServiceInstance(SelfHostMetaServiceDiscovery.java:226) at org.apache.dubbo.registry.dns.DNSServiceDiscovery.toServiceInstance(DNSServiceDiscovery.java:146) at org.apache.dubbo.registry.dns.DNSServiceDiscovery.getInstances(DNSServiceDiscovery.java:105) at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribeURLs(ServiceDiscoveryRegistry.java:309) at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.doSubscribe(ServiceDiscoveryRegistry.java:234) at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribe(ServiceDiscoveryRegistry.java:211) at org.apache.dubbo.registry.ListenerRegistryWrapper.subscribe(ListenerRegistryWrapper.java:106) at org.apache.dubbo.registry.integration.DynamicDirectory.subscribe(DynamicDirectory.java:136) at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.subscribe(ServiceDiscoveryRegistryDirectory.java:76) at org.apache.dubbo.registry.integration.RegistryProtocol.doCreateInvoker(RegistryProtocol.java:515) at org.apache.dubbo.registry.integration.RegistryProtocol.getServiceDiscoveryInvoker(RegistryProtocol.java:493) at org.apache.dubbo.registry.client.migration.MigrationInvoker.refreshServiceDiscoveryInvoker(MigrationInvoker.java:425) at org.apache.dubbo.registry.client.migration.MigrationInvoker.migrateToForceApplicationInvoker(MigrationInvoker.java:202) at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.refreshInvoker(MigrationRuleHandler.java:76) at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.doMigrate(MigrationRuleHandler.java:42) at org.apache.dubbo.registry.client.migration.MigrationRuleListener.onRefer(MigrationRuleListener.java:211) at org.apache.dubbo.registry.integration.RegistryProtocol.interceptInvoker(RegistryProtocol.java:486) at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:468) at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:453) at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:74) at org.apache.dubbo.rpc.cluster.filter.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:68) at org.apache.dubbo.rpc.protocol.ProtocolSerializationWrapper.refer(ProtocolSerializationWrapper.java:51) at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:73) at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java) at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:391) at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:327) at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:204) at org.apache.dubbo.config.utils.ReferenceConfigCache.lambda$get$3(ReferenceConfigCache.java:113) at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) at org.apache.dubbo.config.utils.ReferenceConfigCache.get(ReferenceConfigCache.java:112) at org.apache.dubbo.config.bootstrap.DubboBootstrap.lambda$referServices$12(DubboBootstrap.java:1459) at java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4707) at org.apache.dubbo.config.bootstrap.DubboBootstrap.referServices(DubboBootstrap.java:1438) at org.apache.dubbo.config.bootstrap.DubboBootstrap.doStart(DubboBootstrap.java:1153) at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:1119) [01/12/21 02:29:57:057 UTC] main-EventThread WARN metadata.StandardMetadataServiceURLBuilder: [DUBBO] Metadata Service Port is not provided, since DNS is not able to negotiate the metadata port between Provider and Consumer, will try to use instance port as the default metadata port., dubbo version: 1.0-SNAPSHOT, current host: 10.244.12.52 at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onContextRefreshedEvent(DubboBootstrapApplicationListener.java:109) at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationContextEvent(DubboBootstrapApplicationListener.java:101) at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationEvent(DubboBootstrapApplicationListener.java:78) at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:393) at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:347) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:883) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84) at org.apache.dubbo.samples.ConsumerBootstrap.main(ConsumerBootstrap.java:32) Caused by: org.apache.dubbo.remoting.RemotingException: client(url: dubbo://10.244.12.52:20880/org.apache.dubbo.metadata.MetadataService?codec=dubbo&getAndListenInstanceMetadata.1.callback=true&group=kubernetes-dns-demo-provider&heartbeat=60000&reconnect=false&side=consumer&timeout=5000&version=1.0.0) failed to connect to server /10.244.12.52:20880, error message is:Connection refused: /10.244.12.52:20880 at org.apache.dubbo.remoting.transport.netty4.NettyClient.doConnect(NettyClient.java:171) at org.apache.dubbo.remoting.transport.AbstractClient.connect(AbstractClient.java:197) at org.apache.dubbo.remoting.transport.AbstractClient.<init>(AbstractClient.java:72) at org.apache.dubbo.remoting.transport.netty4.NettyClient.<init>(NettyClient.java:84) at org.apache.dubbo.remoting.transport.netty4.NettyTransporter.connect(NettyTransporter.java:40) at org.apache.dubbo.remoting.Transporter$Adaptive.connect(Transporter$Adaptive.java) at org.apache.dubbo.remoting.Transporters.connect(Transporters.java:75) at org.apache.dubbo.remoting.exchange.support.header.HeaderExchanger.connect(HeaderExchanger.java:39) at org.apache.dubbo.remoting.exchange.Exchangers.connect(Exchangers.java:109) at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol.initClient(DubboProtocol.java:621) ... 62 more Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: /10.244.12.52:20880 Caused by: java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:716) at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748) ``` 请问哪里出了问题，应该怎么配置 -- This is an automated message from the Apache Git Service. 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