Server check fail, please check server nacos-server.xxx.com ,port 9848 is available , error ={}

heqs commented 3 months ago

7848、8848、9848、9849四个端口均有放行，本地telnet没问题，有一台服务器正常启动，另一台服务器应用启动的时候报：

 Server check fail, please check server nacos-server.xxx.com ,port 9848 is available , error ={}
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 72315 nanoseconds delay) for com.alibaba.nacos.shaded.io.grpc.stub.ClientCalls$GrpcFuture@3cc30dee[status=PENDING, info=[GrpcFuture{clientCall=PendingCall{realCall=ClientCallImpl{method=MethodDescriptor{fullMethodName=Request/request, type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true, requestMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@6b419da, responseMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@3b2da18f, schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@5906ebcb}}}}]]
    at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:531)
    at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.serverCheck(GrpcClient.java:243)
    at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.connectToServer(GrpcClient.java:367)
    at com.alibaba.nacos.common.remote.client.RpcClient.start(RpcClient.java:349)
    at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.ensureRpcClient(ClientWorker.java:1100)
    at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.getOneRunningClient(ClientWorker.java:1248)
    at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.queryConfig(ClientWorker.java:1146)
    at com.alibaba.nacos.client.config.impl.ClientWorker.getServerConfig(ClientWorker.java:472)
    at com.alibaba.nacos.client.config.NacosConfigService.getConfigInner(NacosConfigService.java:188)
    at com.alibaba.nacos.client.config.NacosConfigService.getConfig(NacosConfigService.java:99)
    at com.alibaba.csp.sentinel.datasource.nacos.NacosDataSource.readSource(NacosDataSource.java:141)
    at com.alibaba.csp.sentinel.datasource.nacos.NacosDataSource.readSource(NacosDataSource.java:42)
    at com.alibaba.csp.sentinel.datasource.AbstractDataSource.loadConfig(AbstractDataSource.java:44)
    at com.alibaba.csp.sentinel.datasource.nacos.NacosDataSource.loadInitialConfig(NacosDataSource.java:115)
    at com.alibaba.csp.sentinel.datasource.nacos.NacosDataSource.<init>(NacosDataSource.java:110)
    at com.alibaba.cloud.sentinel.datasource.factorybean.NacosDataSourceFactoryBean.getObject(NacosDataSourceFactoryBean.java:81)
    at com.alibaba.cloud.sentinel.datasource.factorybean.NacosDataSourceFactoryBean.getObject(NacosDataSourceFactoryBean.java:34)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:169)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1827)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1265)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at com.alibaba.cloud.sentinel.custom.SentinelDataSourceHandler.registerBean(SentinelDataSourceHandler.java:203)
    at com.alibaba.cloud.sentinel.custom.SentinelDataSourceHandler.lambda$afterSingletonsInstantiated$0(SentinelDataSourceHandler.java:93)
    at java.util.TreeMap.forEach(TreeMap.java:1005)
    at com.alibaba.cloud.sentinel.custom.SentinelDataSourceHandler.afterSingletonsInstantiated(SentinelDataSourceHandler.java:80)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:914)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
    at com.it.uc.UserCenterApplication.main(UserCenterApplication.java:34)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:109)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)

nacos 服务端版本为2.3.2 spring cloud Maven如下

 <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>2.1.4.RELEASE</version>
            <exclusions>
                <exclusion>
                    <groupId>com.alibaba.nacos</groupId>
                    <artifactId>nacos-client</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            <version>2.1.4.RELEASE</version>
            <exclusions>
                <exclusion>
                    <groupId>com.alibaba.nacos</groupId>
                    <artifactId>nacos-client</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
            <version>2.3.2</version>
        </dependency>

找到这个帖子

https://github.com/alibaba/nacos/issues/7893

很多人有同样的问题，解决方案是删除Maven的nacos-config的依赖，但是此方法不适合我，因为我项目里有用到配置中心的能力，请问还有其他解决办法吗？另外说明一点，nacos服务端绑定的域名如果是直接解析nacos服务器原始服务器就不会报这个错，如果解析到华为云elb（底层是nginx），就会报这个错

KomachiSion commented 3 months ago

不知道你怎么看的之前的issue，里面大部分人其实都是网络问题：（比如有vpn，梯子等等）。

超时问题无非3种可能：

服务端响应不过来，解决方式加配置或看下是否有错用导致性能不足。
客户端响应不过来，自查cpu、fullGc、线程池无法创建等问题。
网络问题，丢包了。

但是3种可能都需要自行排除定位。

我看你描述里是一个可以，一个不行，这样的话出现客户端测问题的可能性比较大。

KomachiSion commented 2 months ago

No more response from author for a long time, and this problem seems env problem.

alibaba / nacos

Server check fail, please check server nacos-server.xxx.com ,port 9848 is available , error ={} #12288