Harness Certified Chaos Engineering study guide
Harness Certified Chaos Engineering · Work through your exam, one topic at a time.
The Harness Certified Chaos Engineering credential is presented as a certification for practitioners who design and run controlled failure experiments against distributed systems, and who want to demonstrate that skill on the Harness platform. It sits at the intersection of reliability engineering, SRE practice, and the Harness Resilience Testing product area, so the intended audience is engineers, SREs, platform teams, and QA or release professionals who already operate services in production and are moving from reactive incident response to proactive resilience validation. The exam is expected to cover four broad areas: chaos engineering fundamentals (hypothesis-driven experimentation, steady state, blast radius thinking), fault injection and experiment design, Harness Resilience Testing configuration, and observability with steady-state validation and blast radius control. Preparation should combine hands-on work in a Harness account with the public Harness documentation at developer.harness.io, particularly the Resilience Testing material, plus the Harness training and DevOps Academy resources. The Harness Certified Chaos Engineering study guide has 4 sections and about 2,428 words.
01Chaos Engineering Fundamentals
This domain checks whether you understand chaos engineering as a controlled, hypothesis-driven discipline rather than ad hoc fault testing. For Harness Certified Chaos Engineering, expect questions on the experiment lifecycle, the role of a steady-state hypothesis, how Harness Chaos Engineering represents faults, experiments, probes, and resilience scores, and why production experimentation is bounded by safety controls.
411 words, about 2 min02Fault Injection and Experiment Design
This domain focuses on choosing the right fault, parameterizing it realistically, and designing an experiment that isolates cause and effect. The exam tests fault categories, Harness tunables and target modes, control and treatment design, duration, and cleanup.
430 words, about 2 min03Harness Resilience Testing Configuration
This domain covers the concrete Harness setup: scoping a project, installing chaos infrastructure, connecting a ChaosHub, defining an experiment, attaching probes and steady-state checks, setting schedules, and applying governance. Work in the right scope: account, organization, project, and environment.
394 words, about 2 min04Observability
This domain tests whether you can instrument a chaos experiment so the hypothesis is actually testable. It covers golden signals, metrics, logs, traces, probe queries, baselines, and the difference between monitoring the system and monitoring the fault.
1,193 words, about 6 min