更改rpc_address,nodetool状态显示机器的ip,rpc_port默认为9160。在本地,我可以通过端口9042毫无问题地运行cqlsh。此外,start_rpc也设置为true。允许在9160的firewalld中进行双向连接,则服务正在启动并在9160上侦听。
尽管如此,每次我在另一台机器上尝试时:
cqlsh 149.5.XXX.XXX 9160 I得到:('Unable to connect to any servers',{'149.5.xxx.xxx':error(111,“尝试连接到('149.5.xxx.xxx',9
我刚刚在我的计算机中完成了mongodb的安装,在启动和启用它之后,我仍然得到相同的错误:
MongoDB shell version v4.2.23
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
2022-11-10T16:25:32.787+0100 E QUERY [js] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: Soc
Public Class my_class
Dim WithEvents COMPort As New System.IO.Ports.SerialPort
Public Sub FindReader()
Dim ports As String() = IO.Ports.SerialPort.GetPortNames()
Dim port As String
For Each port In ports
MsgBox(port, MsgBoxStyle.OkOnly Or MsgBoxStyle.Exclamation, "Serial p