Download Sample YAML Files (Config & DevOps)

Download free sample YAML files. Known for its readability, YAML is the industry standard for DevOps, Kubernetes manifests, and Docker Compose. Use these files to test indentation parsing, anchors, and multi-line strings. STANDARD DevOps & Configs File Name Structure / Description Size Action docker-compose.yml Container Config Standard stack definition (Web, Database, Redis). Used to spin…

Download free sample YAML files. Known for its readability, YAML is the industry standard for DevOps, Kubernetes manifests, and Docker Compose. Use these files to test indentation parsing, anchors, and multi-line strings.

STANDARD
DevOps & Configs

File Name Structure / Description Size Action
docker-compose.yml
Container Config		 Standard stack definition (Web, Database, Redis). Used to spin up local environments. 2 KB Download
k8s_deployment.yaml
Kubernetes Manifest		 Defines a Pod, Service, and Ingress. Deeply nested structure. 3 KB Download
ci_pipeline.yml
GitHub Actions		 Workflow definition with steps, `run` commands, and environment variables. 1 KB Download

QA / SYNTAX
Tabs vs Spaces & Anchors

Test Case Description Size Action
Tabs vs Spaces (Invalid) The #1 Error. Indented using Tabs (`\t`) instead of Spaces. Valid parsers MUST reject this file. 1 KB Download
Anchors & Aliases Uses `&default` and `<<: *default` to inherit properties (DRY). Tests your parser’s reference resolution. 2 KB Download
Multi-line Strings Uses `|` (Preserve newlines) and `>` (Fold newlines). Critical for storing scripts or private keys. 1 KB Download

Technical Specs: YAML

  • Whitespace Sensitive: Unlike JSON or XML, indentation determines structure. You cannot use tabs; you must use spaces (usually 2 or 4).
  • Superset of JSON: Technically, valid JSON is also valid YAML. You can paste JSON syntax inside a YAML file and it will parse correctly.
  • MIME Type: text/yaml or application/x-yaml.

Frequently Asked Questions

Why does my YAML file fail to parse?
90% of the time, you used a Tab character. Check your IDE settings and ensure “Convert Tabs to Spaces” is enabled. The other common error is misalignment of indentation levels.
What is the “Norway Problem”?
In older YAML (1.1) parsers, the country code `NO` (for Norway) is automatically interpreted as the boolean `false` (like “No” vs “Yes”). To fix this, you must wrap it in quotes: `”NO”`.

How to validate YAML files?

Because whitespace is invisible, identifying errors manually is hard. Use these tools.

  • YAML Lint: The most popular online validator. Paste your code, and it tells you exactly which line has bad indentation.
  • VS Code (Red Hat YAML Extension): Essential for DevOps. It connects to the Kubernetes Schema Store to autocomplete your K8s files.
  • yq: A command-line tool (like jq for JSON) that lets you query and modify YAML files in terminal scripts.

Developer’s Corner: Safe Parsing

YAML files can contain executable code tags. Always use safe_load in Python to prevent security vulnerabilities.

# Python: Parse YAML Safely
import yamlwith open(‘config.yml’, ‘r’) as file:
# NEVER use yaml.load() without Loader!
config = yaml.safe_load(file)
print(config[‘database’][‘host’])

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