Menu

This is documentation for the next version of K6. For the latest stable release, go to the latest version.

Documentationbreadcrumb arrow Grafana k6breadcrumb arrow Testing guidesbreadcrumb arrow Injecting faults with xk6-disruptorbreadcrumb arrow xk6-disruptor APIbreadcrumb arrow ServiceDisruptor
Open source RSS

ServiceDisruptor

The ServiceDisruptor class can inject different types of faults into the pods that back a Kubernetes service.

To construct a ServiceDisruptor, use the ServiceDisruptor() constructor.

Methods

MethodDescription
ServiceDisruptor.injectGrpcFaults()Inject gRPC faults in the target Pods
ServiceDisruptor.injectHTTPFaults()Inject HTTTP faults in the target Pods
ServiceDisruptor.targets()Returns the list of target Pods of the ServiceDisruptor
ServiceDisruptor.terminatePods()executes a Pod Termination fault in the target Pods

Example

The following example:

  • Creates a disruptor for the nginx service
  • Injects a delay of 100ms and a 10 percent of requests that return an http response code 500.
JavaScript 
import { ServiceDisruptor } from 'k6/x/disruptor';

const fault = {
  averageDelay: '100ms',
  errorRate: 0.1,
  errorCode: 500,
};

export default function () {
  const disruptor = new ServiceDisruptor('nginx', 'default');
  disruptor.injectHTTPFaults(fault, '30s');
}

Note

You can test this script by creating first a pod running nginx and exposing it as a service with the commands below, assuming you have kubectl installed in your environment:

bash 
> kubectl run nginx --image=nginx
> kubectl expose pod nginx --port 80

You can also use the xk6-kubernetes extension for creating these resources from your test script.