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I am trying to install the DB agent in a machine(server) where App agent is running successfully.
But I am getting the below error at the time of DB agent installation
652 ERROR ControllerHttpRequestResponse - Fatal transport error while connecting to URL [/controller/instance/UNKNOWN_MACHINE_ID/systemagentregistration]: java.net.SocketException: Connection reset
Please help me with this.
Connection reset simply means that a TCP RST was received. This happens when your peer receives data that it can't process, and there can be various reasons for that. A reset packet is simply one with no payload and with the RST bit set in the TCP header flags. The simplest is when you close the java socket, and then write more data on the output stream. By closing the socket, you told your peer that you are done talking, and it can forget about your connection. When you send more data on that stream anyway, the peer rejects it with an RST to let you know it isn't listening.
There are several possible causes.