It means that there is connectivity problem between master and slaves.
1. Make sure that they all are in the same subnet<https://en.wikipedia.org/wiki/Subnet> so machines could reach each other 2. Make sure that RMI ports<https://jmeter.apache.org/usermanual/properties_reference.html#remote> on master and slaves are open in your operating system firewall 3. You either set up SSL for RMI<https://jmeter.apache.org/usermanual/remote-test.html#setup_ssl> communication or disable it See How to Perform Distributed Testing in JMeter<https://www.blazemeter.com/blog/distributed-testing-in-jmeter> article for end-to-end instructions and clarifications Apache JMeter - User's Manual: Remote (Distributed) Testing<https://jmeter.apache.org/usermanual/remote-test.html#setup_ssl> The simplest setup is to use one key/cert pair for all JMeter servers and clients you want to connect. JMeter comes with a script to generate a keystore that contains one key (and its corresponding certificate) named rmi.The script is located in the bin directory and is available for Windows systems (called bin/create-rmi-keystore.bat) and Unix like systems (called bin/create-rmi-keystore.sh). jmeter.apache.org ________________________________ From: Deepak Chaudhari <deepak.mypu...@gmail.com> Sent: Wednesday, April 9, 2025 3:32 PM To: user@jmeter.apache.org <user@jmeter.apache.org> Subject: Getting errors in JMeter distributed testing Hi, We are trying distributed testing using JMeter but getting below errors when we trigger the test: Error in reconfigure method java.rmi.unmarshalException: Error unmarshaling return header, nested exception is: java.net.socket.exception: Connection reset Connection refused to host 10.76.xx.xxx; nested exception is: java.net.ConnectException: Connection refused: connect Regards, Deep
