Skip to main content

Services

Last updated on

A service is the unit that Harness Resilience Testing tests, scores, and reports on. Discovery finds candidate targets. Onboarding turns the ones you select into services. Chaos experiments, load tests, DR tests, probes, and risks then attach to those services.

The Kubernetes discovery path invents services from cluster workloads. A Custom Service Agent covers targets you define yourself, such as Linux VMs, Windows VMs, and AWS resources. Bulk discovery onboarding attaches default health probes; services you create one at a time start with none.

Feature Flag

Service onboarding is currently behind a feature flag (CHAOS_RISK_SERVICES_ENABLED). Contact your Harness sales representative to get it enabled for your account.

What you will learn from this topic​

  • The service as the unit of resilience: How experiments, probes, and risks attach to one entity instead of naming targets separately.
  • Discovered compared with onboarded: Why continuous discovery alone does not create a Resilience Testing service.
  • How to read a service: What the Services list and details page report.
  • Service management: How to edit or delete a service, and how to fill probe inputs from a service in Chaos Studio.

Why the service model matters​

Before services existed, each part of Resilience Testing named its own targets. An experiment named a namespace and a workload, a probe repeated the same values in its inputs, and a load test or a DR test described the same application again in its own terms. Nothing connected them.

A service is that connecting entity. Once a target is onboarded, everything else attaches to it.

What attaches to a serviceWhat that gives you
Chaos experiments, load tests, and DR testsOne details page reports all three for that service.
ProbesProbes take their inputs from the target behind the service, so you stop copying namespaces and workload kinds between experiments.
RisksScans record risks per service and score each one, so you can rank services by exposure.

Resilience becomes a property of a service rather than only an outcome of an individual experiment.

Discovered workloads and onboarded services​

Discovery and onboarding are two separate processes.

  • Discovered: A discovery agent builds an inventory on a schedule. On Kubernetes, that inventory is workloads (and optionally network relationships). Discovery is continuous and read-only. It tells you what exists. Go to Service discovery for the platform agent, and go to Automated service onboarding for the Resilience Testing wizard that consumes that inventory.
  • Onboarded: You select targets and onboard them in Resilience Testing. Harness creates a service entity for each one. Bulk discovery onboarding also attaches three default probes and runs a risk scan as part of the flow. Go to Default probes attached during onboarding for the default set.

A cluster can report hundreds of discovered workloads while only a subset become services. Discovery covers everything the agent can see. Onboarding covers what you intend to test.

Continuous discovery, one-time bulk onboarding

Discovery keeps refreshing the inventory after the initial setup. The bulk onboarding wizard runs once per infrastructure. Onboard new workloads later with manual onboarding when discovery finds them.

Where services live in the UI​

Services sit under the Insights section of the Resilience Testing left navigation.

Go to Resilience Testing → Insights → Services to open the list. It shows every service in the project, whichever infrastructure it was onboarded from.

ColumnWhat it shows
Service nameThe display name, the Service ID, and the number of tags applied to it.
Service typeThe kind of target the service represents, such as Service for a Kubernetes workload or Linux VM for a virtual machine.
InfrastructureThe Resilience Testing infrastructure the service is bound to.
Last modifiedWho last changed the service and when. Services created by onboarding show SYSTEM as the author.

Use Search for a service to find a service by name, and Add Filter to narrow the list by attributes such as infrastructure. Reset clears every active filter. The sort control defaults to Last Modified (New -> Old).

Services belong to one infrastructure​

A service is scoped to the infrastructure it was onboarded against. When the same workload runs in more than one cluster and you onboard each infrastructure, you get one service per infrastructure. The Infrastructure column is what separates them.

Custom services you create with the Custom Service Agent also require an explicit infrastructure assignment. Go to Custom Service Agent for that path.

Tags applied at onboarding​

Harness tags each service it onboards through the discovery wizard:

  • onboarding=true: Marks the service as created by the onboarding flow.
  • namespace=<namespace>: Records the Kubernetes namespace the workload runs in.

Open a service​

Select a service name in the list to open its details page.

TabWhat it shows
SummaryTest counts and resilience metrics for the service, the risks detected against it, and its recent test activity.
Resilience TestsThe chaos experiments, load tests, and DR tests that target this service, filtered by Status.
ProbesThe probes attached to the service. Bulk discovery onboarding starts you with three defaults; manual onboarding starts empty. Go to Default probes attached during onboarding for the default set.
RisksThe resilience risks identified against the service, filtered by Severity, Validation, or Source.

Use Edit in the top right to change the display name, description, tags, or attached probes. The Service ID does not change when you rename the service. Use Settings to manage the service configuration.

About this Service​

The left panel of the Summary tab records where the service came from and where experiments against it run.

  • Service type: The platform the target runs on, such as Kubernetes.
  • Chaos agent / infrastructure: The Resilience Testing infrastructure that executes experiments against the service.
  • Namespace: The Kubernetes namespace the workload runs in, when applicable.
  • Discovery agent: The discovery agent that found the workload, when the service came from discovery.

Resilience metrics​

The Summary tab summarizes chaos, load, and disaster recovery activity for the service over the period set in the Timeframe selector, which defaults to the last 30 days.

CardMetrics
Chaos TestingTests run, resilience score, and resilience coverage for this service.
Load TestingTests run and latency metrics when load tests have produced them.
Disaster Recovery TestingTests run and recovery metrics when DR tests have produced them.
Metrics need test activity

Cards stay empty until matching tests have run against the service in the selected timeframe. Some load and DR metric fields remain sparse until those test types report richer results.

Application-level scoring is not in this release

Service pages report per-service results. Application-level resilience scoring across a group of services is not available yet. Do not treat Application Maps as part of the services onboarding flow.

Below the cards, Risks Detected in this Service lists open risks, and Resilience Test Activity lists recent runs. Filter that activity by Chaos Experiments, Load Tests, or DR Tests.

How to read a service​

  • Is this service actually being tested? A service with no test activity is onboarded but unvalidated. Generate a suitable experiment for it before you rely on its score.
  • Is the coverage meaningful? Resilience score tells you how well the service held up in the tests you ran, and resilience coverage tells you how much of the service those tests exercised. A high score with low coverage means the service is barely tested, not resilient.

Use a service to fill in probe inputs in Chaos Studio​

When you add a probe to an experiment in Chaos Studio, select a service to populate the probe inputs instead of typing them.

  1. Open the experiment and select the probe in the Experiment Builder.
  2. Select the service you want the probe to validate.
  3. Harness fills the Envs section from the service, including TARGET_NAMES, TARGET_NAMESPACE, and TARGET_KIND, along with timing inputs such as STATUS_CHECK_TIMEOUT and STATUS_CHECK_DELAY.
  4. Adjust any value that needs to differ for this experiment, then select Apply Changes.

Service selection is optional. Clear it to enter inputs yourself. Target Application on the fault similarly offers workload kind, namespace, and names from workloads Harness already knows about.

In experiment YAML, the link is a serviceId inside probeRef:

probeRef:
  name: pod-status-check
  serviceId: productcatalogservice

Go to Automated service onboarding to onboard services in bulk. Go to Manual service onboarding to onboard one workload.

Edit or delete a service​

Select Edit on a service, or use the row menu on the Services page, to open the Edit Resilience Testing Service wizard. It has the same three steps as manual service onboarding, so you can rename the display name, change its tags, and add, reconfigure, or remove its probes.

Renaming a service does not change its Service ID. Experiments and probes that already reference the service keep working after a rename.

Probe target names must be lowercase

Probe inputs such as TARGET_NAMES are passed to the Kubernetes API, which rejects uppercase characters in resource names. Keep the values lowercase when you edit them, otherwise the probe fails to apply at runtime.

Next steps​

Last updated on