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The DevOps Toolkit: Kubernetes Chaos Engineering

Creating a Multi-Experiment Report

Understand how to execute multiple chaos experiments in Kubernetes, save their results in separate journal files, and combine these for a consolidated multi-experiment report. Discover how this practice enhances application and cluster reliability by providing complete insights into system behavior under various failure scenarios.

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Assuming that we want to see how we can generate reports based on multiple experiments, the first thing we need to do is to run a second experiment. Otherwise, we’d be left with data (journal) from a single experiment.

So, we are going to execute yet another experiment that will generate a second journal file. After that, we’ll try to figure out how to create a report based on both journals.

Using the definition of network-delay.yaml

Let’s start by taking a quick look at yet another definition.

Shell
cat chaos/network-delay.yaml

The output is as follows.

version: 1.0.0
title: What happens if we abort and delay responses
description: If responses are aborted and delayed, the dependant application should retry and/or timeout requests
tags:
- k8s
- istio
- http
configuration:
  ingress_host:
      type: env
      key: INGRESS_HOST
steady-state-hypothesis:
  title: The app is healthy
  probes:
  - type: probe
    name: app-responds-to-requests
    tolerance: 200
    provider:
      type: http
      timeout: 15
      verify_tls: false
      url: http://${ingress_host}?addr=http://go-demo-8
      headers:
...