Basically Distributed Load Test with JMeter

Hello, today I will share my personal notes on how I perform basically distributed load test with JMeter.

Firstly I created 3 Slave and 1 Master droplets on Digital Ocean. All droplets must be in the same local network because these droplets need to communicate with each other on different ports.

On Slave droplets

Installation

wget https://kozyatagi.mirror.guzel.net.tr/apache//jmeter/binaries/apache-jmeter-5.4.1.tgz

apt install default-jdk && apt install default-jre

tar -xzvf apache-jmeter-5.4.1.tgz

Config

nano /apache-jmeter-5.4.1/bin/jmeter.properties

CTRL + W: Set this if you don't want to use SSL for RMI

server.rmi.ssl.disable=true

On Master droplet

Installation

wget https://kozyatagi.mirror.guzel.net.tr/apache//jmeter/binaries/apache-jmeter-5.4.1.tgz

apt install default-jdk && apt install default-jre

tar -xzvf apache-jmeter-5.4.1.tgz

Config

nano /apache-jmeter-5.4.1/bin/jmeter.properties

CTRL + W: remote_hosts

remote_hosts=192.168.1.1,192.168.1.2,192.168.1.3

The following lines can be added to jmeter.properties on all machines to output the load test results as a neat .CSV file.

nano /apache-jmeter-5.4.1/bin/jmeter.properties

jmeter.save.saveservice.output_format=csv
jmeter.save.saveservice.data_type=false
jmeter.save.saveservice.label=true
jmeter.save.saveservice.response_code=true
jmeter.save.saveservice.response_data.on_error=false
jmeter.save.saveservice.response_message=false
jmeter.save.saveservice.assertion_results_failure_message=false
jmeter.save.saveservice.successful=true
jmeter.save.saveservice.thread_name=true
jmeter.save.saveservice.time=true
jmeter.save.saveservice.subresults=false
jmeter.save.saveservice.assertions=true
jmeter.save.saveservice.latency=true
jmeter.save.saveservice.bytes=true
jmeter.save.saveservice.hostname=true
jmeter.save.saveservice.thread_counts=true
jmeter.save.saveservice.sample_count=true
jmeter.save.saveservice.timestamp_format=HH:mm:ss
jmeter.save.saveservice.default_delimiter=;
jmeter.save.saveservice.print_field_names=true
jmeter.save.saveservice.autoflush=true

How to start load test?

On Slave droplets

Run the following command on all slave droplets. Now the slave droplets are ready to be managed with the master.

./jmeter-server -Djava.rmi.server.hostname=192.168.1.1 -Dserver.rmi.localport=1099

./jmeter-server -Djava.rmi.server.hostname=192.168.1.2 -Dserver.rmi.localport=1099

./jmeter-server -Djava.rmi.server.hostname=192.168.1.3 -Dserver.rmi.localport=1099

On Master droplet

Run the following command on master droplet to start the load test.

./jmeter.sh -n -t "/root/LoadTestScenario.jmx" -l "result.csv" -R 192.168.1.1:1099,192.168.1.2:1099,192.168.1.3:1099

References:

Apache JMeter Distributed Testing Step-by-step

Automatically generating nice graphs at end of your Load Test with Apache JMeter and JMeter-Plugins

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