在Nacos中应用启动时，仍报9848端口不可用，如何排查？

linux服务器，部署nacos，springboot应用为docker部署，部署成功后报错2025-05-13 19:39:31.696 ERROR 1 --- [t.remote.worker] c.a.n.c.remote.client.grpc.GrpcClient : Server check fail, please check server localhost ,port 9848 is available , error ={}

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$2(RpcClient.java:370) ~[nacos-client-2.0.4.jar!/:na]
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
at java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
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: localhost/127.0.0.1:9848
Caused by: java.net.ConnectException: Connection refused
at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:na]
at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:777) ~[na:na]
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.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
本地环境，docker启动nacos，idea启动应用没问题