nacos未授权访问漏洞修改后，程序启动报错

一、该问题的重现步骤是什么？

      在进行系统安扫描时，发现了nacos未授权访问的漏洞

        在按照给出的解决办法，修改了nacos的配置文件后，从网页端进入nacos一切正常，但是启动程序时报错，在我修改nacos之前，系统一切正常，不存在什么端口、防火墙之类的问题，这个报错我感觉就是没有连上nacos

        网上说要在程序的配置里面添加nacos的访问用户，我尝试了很多，都没有成功

        请问，这个问题应该怎么解决呢？

        以下是报错详细日志：

java.util.concurrent.ExecutionException: com.alibaba.nacos.shaded.io.grpc.StatusRuntimeException: UNAVAILABLE: io exception

at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:566) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:445) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.serverCheck(GrpcClient.java:148) [nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.connectToServer(GrpcClient.java:264) [nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.common.remote.client.RpcClient.reconnect(RpcClient.java:522) [nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.common.remote.client.RpcClient.lambda$start$2(RpcClient.java:370) [nacos-client-2.0.4.jar:na]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_152]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_152]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) ~[na:1.8.0_152]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) ~[na:1.8.0_152]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_152]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_152]

at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_152]

Caused by: com.alibaba.nacos.shaded.io.grpc.StatusRuntimeException: UNAVAILABLE: io exception

at com.alibaba.nacos.shaded.io.grpc.Status.asRuntimeException(Status.java:533) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:490) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.CensusStatsModule$StatsClientInterceptor$1$1.onClose(CensusStatsModule.java:700) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.CensusTracingModule$TracingClientInterceptor$1$1.onClose(CensusTracingModule.java:399) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:510) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:66) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:630) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$700(ClientCallImpl.java:518) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:692) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:681) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123) ~[nacos-client-2.0.4.jar:na]

... 3 common frames omitted

Caused by: com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: /10.81.48.50:9848

Caused by: java.net.ConnectException: Connection refused: no further information

at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:1.8.0_152]

at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) ~[na:1.8.0_152]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:336) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:685) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[nacos-client-2.0.4.jar:na]

at com.alibaba.nacos.shaded.io.grpc.netty.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[nacos-client-2.0.4.jar:na]

at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_152]

2022-11-01 08:12:26.620  INFO 11024 --- [t.remote.worker] com.alibaba.nacos.common.remote.client   : [ee3726b8-9a31-4512-9ca3-dab35e734c3a_config-0] Fail to connect server, after trying 8965 times, last try server is {serverIp = '10.81.48.50', server main port = 8848}, error = unknown

2022-11-01 08:12:32.636 ERROR 11024 --- [t.remote.worker] c.a.n.c.remote.client.grpc.GrpcClient    : Server check fail, please check server 10.81.48.50 ,port 9848 is available , error ={}

二、你期待的结果是什么？实际看到的又是什么？

三、你正在使用的是什么产品，什么版本？在什么操作系统上？

bladex2.9.1

四、请提供详细的错误堆栈信息，这很重要。

五、若有更多详细信息，请在下面提供。