com.alibaba.nacos.api.exception.NacosException: Client not connected, current status:STARTING
	at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:639)
	at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:619)
	at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.requestToServer(NamingGrpcClientProxy.java:356)
	at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.doRegisterService(NamingGrpcClientProxy.java:209)
	at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.registerService(NamingGrpcClientProxy.java:123)
	at com.alibaba.nacos.client.naming.remote.NamingClientProxyDelegate.registerService(NamingClientProxyDelegate.java:98)
	at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:152)
	at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:75)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:232)
	at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:78)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:133)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:98)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:86)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:178)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:171)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:145)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:430)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:387)
	at org.springframework.boot.web.reactive.context.WebServerManager.start(WebServerManager.java:57)
	at org.springframework.boot.web.reactive.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:40)
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:179)
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54)
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:357)
	at java.lang.Iterable.forEach(Iterable.java:75)
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:156)
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:124)
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:949)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:594)
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:409)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289)
	at com.dalincun.gateway.DalincunGatewayApplication.main(DalincunGatewayApplication.java:15)
19:38:44.800 [main] WARN  o.s.b.w.r.c.AnnotationConfigReactiveWebServerApplicationContext - [refresh,599] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is java.lang.reflect.UndeclaredThrowableException
19:38:47.219 [main] ERROR o.s.b.SpringApplication - [reportFailure,818] - Application run failed

原因，只映射了8848端口，而新版的nacos还需要映射9848和9849端口。映射完成后成功解决了

同理，可以类比其他需要映射多端口的程序，每个端口都需要添加映射配置，例如Elasticsearch的9200和9300端口。