Please can anyone provide me the configuration of logstash to access the log that are located on a remote system. I have tried with IP address, but it says that the plugin failed.
You are going to need to set up some sort of shipping method from your remote system to your system, i.e. logstash-forwarder. Here is a good guide for getting that set up.
Logstash-forwarder on your remote system will watch any logs that you specify in the logstash-forwarder configuration, and it will ship those logs to your system that is running Logstash server.