Nacos上述集群模式下告警，是因为连接mysql异常导致整个集群异常了吗？

Nacos上述集群模式下告警，是因为连接mysql异常导致整个集群异常了吗？
2023-12-19 23:29:25,810 WARN HikariPool-1 - Failed to validate connection com.mysql.cj.jdbc.ConnectionImpl@150eee61 (Communications link failure

The last packet successfully received from the server was 20,009 milliseconds ago. The last packet sent successfully to the server was 20,010 milliseconds ago.). Possibly consider using a shorter maxLifetime value.

2023-12-19 23:29:27,179 INFO [Cluster-nacos1:8848] Server healthy check fail, currentConnection = 1702958250987_10.11.1.11_58150

2023-12-19 23:29:27,180 INFO [Cluster-nacos1:8848] Try to reconnect to a new server, server is not appointed, will choose a random server.

2023-12-19 23:29:28,039 INFO [Cluster-nacos3:8848] Server healthy check fail, currentConnection = 1702958241223_10.11.1.11_39560

2023-12-19 23:29:28,039 INFO [Cluster-nacos3:8848] Try to reconnect to a new server, server is not appointed, will choose a random server.

2023-12-19 23:29:28,273 WARN HikariPool-1 - Failed to validate connection com.mysql.cj.jdbc.ConnectionImpl@2eb23bbc (Communications link failure

The last packet successfully received from the server was 152,630 milliseconds ago. The last packet sent successfully to the server was 152,631 milliseconds ago.). Possibly consider using a shorter maxLifetime value.

2023-12-19 23:29:30,181 ERROR Server check fail, please check server nacos1 ,port 9849 is available , error ={}

java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 86087 nanoseconds delay) for io.grpc.stub.ClientCalls$GrpcFuture@37bda231[status=PENDING, info=[GrpcFuture{clientCall=ClientCallImpl{method=MethodDescriptor{fullMethodName=Request/request, type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true, requestMarshaller=io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@794b08c8, responseMarshaller=io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@82645e5, schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@61a8356c}}}]]
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:508)
at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.serverCheck(GrpcClient.java:196)
at com.alibaba.nacos.common.remote.client.grpc.GrpcClient.connectToServer(GrpcClient.java:307)
at com.alibaba.nacos.common.remote.client.RpcClient.reconnect(RpcClient.java:498)
at com.alibaba.nacos.common.remote.client.RpcClient.lambda$start$2(RpcClient.java:339)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:750)
2023-12-19 23:29:31,041 ERROR Server check fail, please check server nacos3 ,port 9849 is available , error ={}