nacos服务端2.0.3 问题之启动报错如何解决

问题一：请问python注册nacos，加了账号密码还是报错提示权限不足注册不了怎么回事？

请问python注册nacos，加了账号密码还是报错提示权限不足注册不了怎么回事？client=nacos.NacosClient('127.0.0.1:8848',namespace='dev-id',username="nacos", password="nacos")我在java里面用nacos sdk 都可以正常使用。

参考回答：

在使用 Python SDK 注册 Nacos 时，如果配置了账号密码，需要确保账号密码的正确性，并且账号需要具有注册权限。如果账号密码正确，但仍然提示权限不足，可能是因为 Nacos Server 的权限配置存在问题。

你可以尝试以下方法解决问题：

1. 确认你使用的 Nacos Server 版本是否支持账号密码认证，如果不支持，则无法使用账号密码注册。在 Nacos 1.4.0 及以上版本中，支持使用账号密码进行认证。
   
2. 确认你在 Python SDK 中配置的账号密码是否正确，可以尝试使用其他工具（如浏览器）登录 Nacos 控制台，检查账号密码是否生效。
   
3. 确认你在 Nacos Server 中配置的权限是否正确，可以尝试在 Nacos 控制台中查看该账号是否具有注册权限。如果没有注册权限，可以在 Nacos 控制台中添加该账号的注册权限。
   
4. 如果以上方法都无法解决问题，可以尝试重新启动 Nacos Server，并检查 Nacos Server 的日志文件，查看是否存在相关错误信息。
   

总之，如果你无法通过 Python SDK 注册 Nacos，需要先确认账号密码的正确性，并检查 Nacos Server 的权限配置和日志信息，以找到问题所在。

关于本问题的更多回答可点击原文查看：https://developer.aliyun.com/ask/518723?spm=a2c6h.14164896.0.0.792a2a4ez0AhCw

问题二：Nacos客户端接收解析Udp包偶现报错日志，但是客户端和服务器Nacos正常运行，是啥原因？

Nacos客户端接收解析Udp包偶现报错日志，但是客户端和服务器Nacos正常运行，是啥原因？2023-05-05 12:32:05.417 ERROR[com.alibaba.nacos.naming.push.receiver]com.alibaba.nacos.client.naming.run:113 -[NA] error while receiving push data com.alibaba.nacos.api.exception.runtime.NacosDeserializationException: errCode: 101, errMsg: Nacos deserialize for class [com.alibaba.nacos.client.naming.core.PushReceiver$PushPacket] failed.Version [e.g. nacos-server 2.0.3, nacos-client 1.4.1]Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'OPTIONS': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false') at [Source: (String)"OPTIONS sip:100@XXX.224.212.117 SIP/2.0

参考回答：

这个错误日志显示 Nacos 客户端在接收推送数据时出现了反序列化异常，具体来说是在将推送数据反序列化为 com.alibaba.nacos.client.naming.core.PushReceiver$PushPacket 对象时失败了。错误信息中提到了 com.fasterxml.jackson.core.JsonParseException 异常，这个异常是由 Jackson 序列化/反序列化库抛出的，一般是由于传入的数据格式不符合 JSON 格式所致。

根据错误信息中提供的内容，异常信息的源头是 OPTIONS sip:100@XXX.224.212.117 SIP/2.0，这是一个 HTTP 请求的方法和路径部分，但是不符合 JSON 格式，因此导致了反序列化异常。从这个错误信息来看，可能是某个应用程序误将 HTTP 请求发送到了 Nacos 服务器的推送端口（默认是 8848），导致了推送数据的格式异常，从而导致了 Nacos 客户端的反序列化异常。

如果这个错误只是偶现的，而且没有影响到 Nacos 的正常运行，那么可以先观察一下是否有某个应用程序在调用 Nacos 推送接口时发送了异常的请求。如果发现了问题的应用程序，可以修复它的代码，让它发送正确格式的请求。如果找不到问题所在，也可以考虑升级 Nacos 客户端的版本，或者将错误日志上报给 Nacos 官方，看看是否有更好的解决方案。

关于本问题的更多回答可点击原文查看：https://developer.aliyun.com/ask/518696?spm=a2c6h.14164896.0.0.792a2a4ez0AhCw

问题三：nacos服务端2.0.3 启动报错

1、问题描述：新手使用nacos，建立linux堡垒机，./startup.sh后日志报错。

2、环境：

① 堡垒机环境Centos7 ② jdk1.8.0_302

3、已尝试方法

①#4089

根据该方法修改jdk版本到jdk1.8.0_202，失败。

②https://blog.csdn.net/weixin_42982636/article/details/108221299

根据该方法尝试过window的nacos，可以启动，但是该方法单例模式，我想尝试集群模式启动。

4、启动异常

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:156) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1204) at com.alibaba.nacos.Nacos.main(Nacos.java:35) 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:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.PropertiesLauncher.main(PropertiesLauncher.java:467) Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:124) at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.(TomcatWebServer.java:86) at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:416) at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:180) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:180) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:153) ... 16 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'distroFilterRegistration' defined in class path resource [com/alibaba/nacos/naming/web/NamingConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servlet.FilterRegistrationBean]: Factory method 'distroFilterRegistration' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroFilter': Unsatisfied dependency expressed through field 'distroMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroMapper' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/DistroMapper.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverMemberManager' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-core-2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.core.cluster.ServerMemberManager]: Constructor threw exception; nested exception is ErrCode:500, ErrMsg:jmenv.tbsite.net at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1318) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1158) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514) at org.springframework.beans.factory.support.AbstractBeanFactory.lambdadoGetBeandoGetBeandoGetBean0(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:211) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:202) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addServletContextInitializerBeans(ServletContextInitializerBeans.java:96) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.(ServletContextInitializerBeans.java:85) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans(ServletWebServerApplicationContext.java:253) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize(ServletWebServerApplicationContext.java:227) at org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:53) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1384)atorg.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1384)atorg.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1384) at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1374) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1384)atorg.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1384)atorg.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1384) at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1374) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:105) ... 21 common frames omitted Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servlet.FilterRegistrationBean]: Factory method 'distroFilterRegistration' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroFilter': Unsatisfied dependency expressed through field 'distroMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroMapper' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/DistroMapper.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverMemberManager' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-core-2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.core.cluster.ServerMemberManager]: Constructor threw exception; nested exception is ErrCode:500, ErrMsg:jmenv.tbsite.net at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) ... 61 common frames omitted Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroFilter': Unsatisfied dependency expressed through field 'distroMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroMapper' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/DistroMapper.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverMemberManager' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-core-2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.core.cluster.ServerMemberManager]: Constructor threw exception; nested exception is ErrCode:500, ErrMsg:jmenv.tbsite.net at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessorAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:598)atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:376)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1402)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:591)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514)atorg.springframework.beans.factory.support.AbstractBeanFactory.lambdaAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:598)atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:376)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1402)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:591)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514)atorg.springframework.beans.factory.support.AbstractBeanFactory.lambdaAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:598) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:376) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1402) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:591) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514) at org.springframework.beans.factory.support.AbstractBeanFactory.lambdadoGetBean0(AbstractBeanFactory.java:321)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)atorg.springframework.context.annotation.ConfigurationClassEnhancer0(AbstractBeanFactory.java:321)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)atorg.springframework.context.annotation.ConfigurationClassEnhancer0(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.context.annotation.ConfigurationClassEnhancerBeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:394) at org.springframework.context.annotation.ConfigurationClassEnhancerBeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:366)atcom.alibaba.nacos.naming.web.NamingConfigBeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:366)atcom.alibaba.nacos.naming.web.NamingConfigBeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:366) at com.alibaba.nacos.naming.web.NamingConfigEnhancerBySpringCGLIBEnhancerBySpringCGLIBEnhancerBySpringCGLIBa2a88110.distroFilter()atcom.alibaba.nacos.naming.web.NamingConfig.distroFilterRegistration(NamingConfig.java:42)atcom.alibaba.nacos.naming.web.NamingConfiga2a88110.distroFilter()atcom.alibaba.nacos.naming.web.NamingConfig.distroFilterRegistration(NamingConfig.java:42)atcom.alibaba.nacos.naming.web.NamingConfiga2a88110.distroFilter() at com.alibaba.nacos.naming.web.NamingConfig.distroFilterRegistration(NamingConfig.java:42) at com.alibaba.nacos.naming.web.NamingConfigEnhancerBySpringCGLIBEnhancerBySpringCGLIBEnhancerBySpringCGLIBa2a88110.CGLIBa2a88110.CGLIBa2a88110.CGLIBdistroFilterRegistration0()atcom.alibaba.nacos.naming.web.NamingConfig0()atcom.alibaba.nacos.naming.web.NamingConfig0() at com.alibaba.nacos.naming.web.NamingConfigEnhancerBySpringCGLIBEnhancerBySpringCGLIBEnhancerBySpringCGLIBa2a88110a2a88110a2a88110FastClassBySpringCGLIBFastClassBySpringCGLIBFastClassBySpringCGLIB52e6a488.invoke()atorg.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)atorg.springframework.context.annotation.ConfigurationClassEnhancer52e6a488.invoke()atorg.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)atorg.springframework.context.annotation.ConfigurationClassEnhancer52e6a488.invoke() at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) at org.springframework.context.annotation.ConfigurationClassEnhancerBeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) at com.alibaba.nacos.naming.web.NamingConfig

EnhancerBySpringCGLIBEnhancerBySpringCGLIB

EnhancerBySpringCGLIBa2a88110.distroFilterRegistration() 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.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 62 common frames omitted Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'distroMapper' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-naming-2.0.3.jar!/com/alibaba/nacos/naming/core/DistroMapper.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverMemberManager' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-core-2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.core.cluster.ServerMemberManager]: Constructor threw exception; nested exception is ErrCode:500, ErrMsg:jmenv.tbsite.net at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:218) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1338) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1185) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514) at org.springframework.beans.factory.support.AbstractBeanFactory.lambdadoGetBeandoGetBeandoGetBean0(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1196) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessorAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:595)...85commonframesomittedCausedby:org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname′serverMemberManager′definedinURL[jar:file:/root/nacos/nacos/target/nacos−server.jar!/BOOT−INF/lib/nacos−core−2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]:Beaninstantiationviaconstructorfailed;nestedexceptionisorg.springframework.beans.BeanInstantiationException:Failedtoinstantiate[com.alibaba.nacos.core.cluster.ServerMemberManager]:Constructorthrewexception;nestedexceptionisErrCode:500,ErrMsg:jmenv.tbsite.netatorg.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:304)atorg.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:285)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1338)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1185)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514)atorg.springframework.beans.factory.support.AbstractBeanFactory.lambdaAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:595)...85commonframesomittedCausedby:org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname′serverMemberManager′definedinURL[jar:file:/root/nacos/nacos/target/nacos−server.jar!/BOOT−INF/lib/nacos−core−2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]:Beaninstantiationviaconstructorfailed;nestedexceptionisorg.springframework.beans.BeanInstantiationException:Failedtoinstantiate[com.alibaba.nacos.core.cluster.ServerMemberManager]:Constructorthrewexception;nestedexceptionisErrCode:500,ErrMsg:jmenv.tbsite.netatorg.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:304)atorg.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:285)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1338)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1185)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514)atorg.springframework.beans.factory.support.AbstractBeanFactory.lambdaAutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:595) ... 85 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverMemberManager' defined in URL [jar:file:/root/nacos/nacos/target/nacos-server.jar!/BOOT-INF/lib/nacos-core-2.0.3.jar!/com/alibaba/nacos/core/cluster/ServerMemberManager.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.core.cluster.ServerMemberManager]: Constructor threw exception; nested exception is ErrCode:500, ErrMsg:jmenv.tbsite.net at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:304) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:285) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1338) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1185) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514) at org.springframework.beans.factory.support.AbstractBeanFactory.lambdadoGetBean$0(AbstractBeanFactory.java:321) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:319) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1196) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760) ... 98 common frames omitted Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.alibaba.nacos.core.cluster.ServerMemberManager]: Constructor threw exception; nested exception is ErrCode:500, ErrMsg:jmenv.tbsite.net at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:187) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:117) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:300) ... 112 common frames omitted Caused by: com.alibaba.nacos.api.exception.NacosException: java.net.UnknownHostException: jmenv.tbsite.net at com.alibaba.nacos.core.cluster.lookup.AddressServerMemberLookup.run(AddressServerMemberLookup.java:150) at com.alibaba.nacos.core.cluster.lookup.AddressServerMemberLookup.doStart(AddressServerMemberLookup.java:98) at com.alibaba.nacos.core.cluster.AbstractMemberLookup.start(AbstractMemberLookup.java:53) at com.alibaba.nacos.core.cluster.ServerMemberManager.initAndStartLookup(ServerMemberManager.java:181) at com.alibaba.nacos.core.cluster.ServerMemberManager.init(ServerMemberManager.java:161) at com.alibaba.nacos.core.cluster.ServerMemberManager.(ServerMemberManager.java:142) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:175) ... 114 common frames omitted Caused by: java.net.UnknownHostException: jmenv.tbsite.net at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at sun.net.NetworkClient.doConnect(NetworkClient.java:175) at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) at sun.net.www.http.HttpClient.(HttpClient.java:242) at sun.net.www.http.HttpClient.New(HttpClient.java:339) at sun.net.www.http.HttpClient.New(HttpClient.java:357) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220) at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984) at com.alibaba.nacos.common.http.client.request.JdkHttpClientRequest.execute(JdkHttpClientRequest.java:114) at com.alibaba.nacos.common.http.client.NacosRestTemplate.execute(NacosRestTemplate.java:482) at com.alibaba.nacos.common.http.client.NacosRestTemplate.get(NacosRestTemplate.java:72) at com.alibaba.nacos.core.cluster.lookup.AddressServerMemberLookup.syncFromAddressUrl(AddressServerMemberLookup.java:173) at com.alibaba.nacos.core.cluster.lookup.AddressServerMemberLookup.run(AddressServerMemberLookup.java:141) ... 124 common frames omitted

原提问者GitHub用户gaichenghao

参考回答：

参考官方文档部署 https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html

原回答者GitHub用户brotherlu-xcq

关于本问题的更多回答可点击原文查看：https://developer.aliyun.com/ask/513230?spm=a2c6h.14164896.0.0.792a2a4ez0AhCw

问题四：Nacos通过sdk调用注销实例，不报错但是服务不下线？有知道是什么原因的吗？

Nacos通过sdk调用注销实例，不报错但是服务不下线？有知道是什么原因的吗？nacos版本是2.2.1 client sdk也是2.2.1

参考回答：

试试openapi里面的注销接口

关于本问题的更多回答可点击原文查看：https://developer.aliyun.com/ask/520762?spm=a2c6h.14164896.0.0.792a2a4ez0AhCw

问题五：Nacos这个8850的端口为什么报错0.0.0.0：7848地址被占用啊？

Nacos这个8850的端口为什么报错0.0.0.0：7848地址被占用啊？

参考回答：

这种情况可能是因为8850端口已经被其他进程占用了，导致Nacos无法启动。您可以使用以下命令查看端口占用情况：

lsof -i :8850

如果该端口已经被占用，您可以使用以下命令杀死占用该端口的进程：

kill -9 <PID>

其中，是占用该端口的进程ID。然后您可以重新启动Nacos服务。

关于本问题的更多回答可点击原文查看：https://developer.aliyun.com/ask/520773?spm=a2c6h.14164896.0.0.17db2a4etvBO5d