spring cloud alibaba 调用服务器nacos报错问题
spring cloud alibaba 2.2.7.RELEASE
spring boot 2.2.13.RELEASE
2021-12-18 11:39:44.536 ERROR 26756 --- [ main] c.a.c.n.registry.NacosServiceRegistry : nacos registry, cs-qq-guild register failed...NacosRegistration{nacosDiscoveryProperties=NacosDiscoveryProperties{serverAddr='xxxx:8848', endpoint='', namespace='xxxx', watchDelay=30000, logName='', service='xxx', weight=1.0, clusterName='DEFAULT', group='xxx', namingLoadCacheAtStart='false', metadata={appname=xxx, preserved.register.source=SPRING_CLOUD, version=0.0.1}, registerEnabled=true, ip='xxx', networkInterface='', port=5203, secure=false, accessKey='', secretKey='', heartBeatInterval=null, heartBeatTimeout=null, ipDeleteTimeout=null, failFast=true}},
com.alibaba.nacos.api.exception.NacosException: Request nacos server failed:
at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.requestToServer(NamingGrpcClientProxy.java:279) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.doRegisterService(NamingGrpcClientProxy.java:129) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.registerService(NamingGrpcClientProxy.java:115) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.nacos.client.naming.remote.NamingClientProxyDelegate.registerService(NamingClientProxyDelegate.java:95) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:145) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:74) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.7.RELEASE.jar:2.2.7.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) [spring-cloud-commons-2.2.9.RELEASE.jar:2.2.9.RELEASE]
at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:78) [spring-cloud-starter-alibaba-nacos-discovery-2.2.7.RELEASE.jar:2.2.7.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) [spring-cloud-commons-2.2.9.RELEASE.jar:2.2.9.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) [spring-cloud-commons-2.2.9.RELEASE.jar:2.2.9.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) [spring-cloud-commons-2.2.9.RELEASE.jar:2.2.9.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) [spring-cloud-commons-2.2.9.RELEASE.jar:2.2.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.13.RELEASE.jar:2.2.13.RELEASE]
at com.yzycoc.discord.QqGuildApplication.main(QqGuildApplication.java:33) [classes/:na]
Caused by: com.alibaba.nacos.api.exception.NacosException: Client not connected,current status:STARTING
at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:655) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:635) ~[nacos-client-2.0.3.jar:na]
at com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.requestToServer(NamingGrpcClientProxy.java:269) ~[nacos-client-2.0.3.jar:na]
... 25 common frames omitted
原因: 因为调用的是服务器的nacos，由于安全策略问题，并没有开放所有端口。本以为nacos只占用8848（就是网站等服务端口）端口。但是在nacos 2.x，增加了gRPC通讯方式，看下文：
Nacos2.0版本相比1.X新增了gRPC的通信方式，因此需要增加2个端口。新增端口是在配置的主端口(server.port)基础上，进行一定偏移量自动生成。
| 端口 | 偏移量 | 描述 |
|---|---|---|
| 9848 | 1000 | 客户端gRPC请求服务端端口，用于客户端向服务端发起连接和请求 |
| 9849 | 1001 | 服务端gRPC请求服务端端口，用于服务间同步等 |
解决：在服务器厂商控制台添加安全组，8848,9848,9849 端口。
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