Connection refused to client

I am testing IotDB in standalone mode. The server works flawlessly whenever launched, but after a while client connections are refused either locally or remotely. I have the following errors logs:

Confignode logs:
`
2023-12-17 00:02:16,149 [AsyncDataNodeInternalServiceClientPool-selector-63] ERROR o.a.i.c.c.a.AsyncDataNodeInternalServiceClient:126 - Unexpected exception occurs in AsyncDataNodeInternalServiceClient{TEndPoint(ip:127.0.0.1, port:10730)} : Client has an error! 2023-12-17 00:02:16,149 [AsyncDataNodeInternalServiceClientPool-selector-63] ERROR o.a.i.c.c.a.h.r.PipePushMetaRPCHandler:78 - Failed to PIPE_PUSH_ALL_META on DataNode: {id=1, internalEndPoint=TEndPoint(ip:127.0.0.1, port:10730)}, exception: Connection refused
`

Datanode Logs:
`
2023-12-16 00:20:27,850 [pool-30-IoTDB-ClientRPC-Processor-14] ERROR o.a.t.s.TThreadPoolServer$WorkerProcess:258 - Thrift Error occurred during processing of message. org.apache.thrift.transport.TTransportException: Frame size (1129270862) larger than protect max size (536870912)! 2023-12-16 11:59:28,470 [pool-30-IoTDB-ClientRPC-Processor-15] ERROR o.a.i.c.c.t.WrappedThreadPoolExecutor:111 - Exception in thread pool org.apache.iotdb.threadpool:type=ClientRPC-Processor 2023-12-16 11:59:28,471 [pool-30-IoTDB-ClientRPC-Processor-15] ERROR o.a.i.c.c.IoTDBDefaultThreadExceptionHandler:31 - Exception in thread pool-30-IoTDB-ClientRPC-Processor-15-97
`

I am hosting IoTDB on a VPS server with limited ressources (1GB ram). Although, when I run the start-stanadlone script the only ports that is open is port 6667, all other ports are closed. Any hints?

Thanks for your help.
Alexis

Start with the start-standalone script and compare the ConfigNode and DataNode logs around the first refused connection. Check whether the limited 1GB VPS resources, the client RPC processor errors, or closed service ports explain the failure; done means identifying the cause and documenting a reproducible fix or configuration change.

Written by the indexing model from the issue text.