Kubernetes Kustomization Overlay
A Kustomize overlay with a name prefix and suffix, common labels, an image tag override, a configMapGenerator merge, and a JSON-6902 patch embedded as a block scalar — YAML inside YAML, which naive rewriters mangle.
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: example-apps
namePrefix: prod-
nameSuffix: -v2
commonLabels:
app.kubernetes.io/instance: prod
app.kubernetes.io/managed-by: kustomize
resources:
- ../../base
- networkpolicy.yaml
patches:
- target:
kind: Deployment
name: orders
patch: |
- op: replace
path: /spec/replicas
value: 6
- op: add
path: /spec/template/spec/containers/0/env/-
value:
name: TIER
value: prod
configMapGenerator:
- name: orders-config
behavior: merge
literals:
- LOG_LEVEL=warn
images:
- name: registry.example.invalid/example-org/orders
newTag: 1.4.0
Specifications
- Kind
- Kustomization
- Resources
- 2
- Patches
- 1
- Patch Ops
- 2
- Image Overrides
- 1
- Has Embedded Patch Scalar
- true
Testing contract
Expected to pass- Scenario
- Apply a Kustomize overlay whose patch is embedded as a YAML block scalar
- Expected result
- The embedded patch parses as two JSON-6902 operations and the replica count for the orders Deployment becomes 6
What is a .yaml file?
YAML (YAML Ain't Markup Language) is a human-readable data-serialization format using indentation, key-value pairs, and lists, and is a superset of JSON. It supports comments, anchors, and multiple documents per file, favoring readability for configuration. Its indentation sensitivity makes it error-prone to hand-edit.
How to use this file
Use an example YAML file to test config parsers, indentation and anchor handling, multi-document streams, and safe-loading to avoid arbitrary object construction.
How to use this file for testing
“Kubernetes Kustomization Overlay” is a deterministic Novus Examples fixture for Config testing, Config parsing, Editor testing. TOML, INI, YAML, .env, and dotfile configuration samples with nested sections and typed values — for testing config parsers, loaders, and environment tooling.
Documented properties for this file: YAML · 718 bytes. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Pipeline and infrastructure fixtures are inert configuration: steps reference fictional images and scripts, and nothing here executes. Run your linter, schema validator, migrator, or policy engine against them, and expect the deprecated-syntax and intentionally invalid variants to be rejected.
Point your config loader at the file and assert it reads the documented sections and typed values, including any deliberately-tricky nesting or comments.
Code examples
import yaml # pip install pyyaml
with open("kustomization.yaml") as f:
data = yaml.safe_load(f)
print(data)Related files
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