JMeter in Kubernetes and OpenShift

Kubernetes v1.8+ or OpenShift v3.5+ is required.

Setup

1. Create the Kubernetes resources:

   export NAMESPACE=<new-kubernetes-namespace>
   
   kubectl create ns $NAMESPACE
   kubectl apply -f kube/ -n $NAMESPACE
   kubectl get all -n $NAMESPACE
   

2. Create the JMeter database in InfluxDB:

   kubectl exec -it $(kubectl get po -n $NAMESPACE | grep jmeter-influxdb | awk '{print $1}') -- influx -execute 'CREATE DATABASE jmeter'

3. Create the InfluxDB data source in Grafana:

   export JMETER_GRAFANA_POD=$(kubectl get po -n $NAMESPACE | grep jmeter-grafana | awk '{print $1}')
   
   kubectl exec -it $JMETER_GRAFANA_POD -- curl 'http://admin:admin@127.0.0.1:3000/api/datasources' -X POST -H 'Content-Type: application/json;charset=UTF-8' --data-binary '{"name":"jmeterdb","type":"influxdb","url":"http://jmeter-influxdb:8086","access":"proxy","isDefault":true,"database":"jmeter","user":"admin","password":"admin"}'
   

   Output:

   {"datasource":{"id":1,"orgId":1,"name":"jmeterdb","type":"influxdb","typeLogoUrl":"","access":"proxy","url":"http://jmeter-influxdb:8086","password":"admin","user":"admin","database":"jmeter","basicAuth":false,"basicAuthUser":"","basicAuthPassword":"","withCredentials":false,"isDefault":true,"secureJsonFields":{},"version":1,"readOnly":false},"id":1,"message":"Datasource added","name":"jmeterdb"}
   

4. Copy /load_test to /tmp/load_test in the jmeter-master pod, then make /tmp/load_test an executable file. /load_test is a ConfigMap mounted as a volume (read-only):

   export JMETER_MASTER_POD=$(kubectl get po -n $NAMESPACE | grep jmeter-master | awk '{print $1}')
   
   kubectl exec -n $NAMESPACE $JMETER_MASTER_POD cp /load_test /tmp/load_test
   kubectl exec -n $NAMESPACE $JMETER_MASTER_POD chmod 755 /tmp/load_test
   

Running Tests

Copy the JMX file to the jmeter-master pod and initiate the test using the /jmeter/load_test script:

kubectl cp cloudssky.jmx -n $NAMESPACE $JMETER_MASTER_POD:/tmp/tests.jmx
kubectl exec -n $NAMESPACE $JMETER_MASTER_POD /tmp/load_test /tmp/tests.jmx

To stop a test:

kubectl exec -n $NAMESPACE $JMETER_MASTER_POD /jmeter/apache-jmeter-5.0/bin/stoptest.sh

Links

• Load Testing JMeter On Kubernetes
• Grafana Reporter

Notes

• Investigate tuning the JVM heap of jmeter-master pod

Cleanup

kubectl delete -f kube/ -n $NAMESPACE