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kubernetes-scaling

Helm Chart with services auto-scaling.

Services

Overview

Aim of the project was to create own Helm chart that configures all services as its subcharts. The Horizontal Pod Autoscalers and Ingress were also implemented. The system is also extended with JMeter-Operator that enables running load tests of both services and presenting the results in Grafana tool.

Perform tests with Apache Jmeter

Remember to properly set or replace variables in following steps

  1. Install and run Jmeter Operator: https://github.com/kubernauts/jmeter-operator

  2. Ensure that proper data source is created in Grafana

    kubectl -n $namespace exec -it $grafana_pod -- curl 'http://admin:[email protected]:3000/api/datasources' -X POST -H 'Content-Type: application/json;charset=UTF-8' --data-binary '{"name":"jmeterdb","type":"influxdb","url":"http://$influxdb_service:8086","access":"proxy","isDefault":true,"database":"jmeter","user":"admin","password":"admin"}'
    
    # namespace - namespace that Jmeter instances are run in
    # grafana_pod - name of grafana pod
    # influxdb_service - name of the influxdb service
  3. Copy test plan to Jmeter master

    kubectl -n $namespace cp tests/test-homepages.jmx "$master_pod:/$test_name"
    
    # namespace - namespace that Jmeter instances are run in
    # master_pod - name of master pod
    # test_name - name of the test plan in pod filesystem
  4. Execute test plan

    kubectl -n $namespace exec -it $master_pod -- /bin/bash /load_test $test_name
  5. Inspect the logs from the test execution and check Grafana dashboard to see the results (Remember to import GrafanaJMeterTemplate.json from jmeter-operator repository).

    You can reach Grafana by checking ip of your cluster node, on minikube type:

    node_ip = minikube ip

    Check the node port in description of Grafana service:

    kubectl describe svc $grafana_service -n $namespace

    Enter Grafana dashboards: http:$node_ip:$node_port

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Helm Chart with services auto-scaling

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