title: Run two logstash instance in same machine
body: <p>I want to run two <code>logstash</code> instance in same machine. Now i am starting the <code>logstash</code> by using the command.<code>logstash.bat agent -f logstashconf.conf</code>. But when i am going to start the second instance via same command results some port binding issues. So is there is any parameter available that user can explicitly configure the port by using command line?. Also is there is any further issues happens while i running more than one instance of <code>logstash</code> in same machine?</p>