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Sample YAML File Download — Free DevOps Config Examples

Download free YAML config file examples from 1KB to 500KB — Docker Compose, Kubernetes manifests, GitHub Actions CI/CD workflows, and deeply nested structures with anchors. Use these YAML test files for parser validation, DevOps pipeline testing, and config management tools.

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sample-1kb.yaml

1 KB

30 lines

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Verified file details
Filename
sample-1kb.yaml
Exact size
1,024 bytes
Displayed size
1 KB
MIME type
application/octet-stream
Lines
30
Note
simple-config
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-1kb.yaml

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sample-10kb.yaml

10 KB

300 lines

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Filename
sample-10kb.yaml
Exact size
10,240 bytes
Displayed size
10 KB
MIME type
application/octet-stream
Lines
300
Note
docker-compose-style
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-10kb.yaml

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sample-50kb.yaml

50 KB

1,500 lines

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sample-50kb.yaml
Exact size
51,200 bytes
Displayed size
50 KB
MIME type
application/octet-stream
Lines
1,500
Note
kubernetes-manifest-style
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-50kb.yaml

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sample-100kb.yaml

100 KB

3,000 lines

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Filename
sample-100kb.yaml
Exact size
102,400 bytes
Displayed size
100 KB
MIME type
application/octet-stream
Lines
3,000
Note
nested-deep
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-100kb.yaml

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sample-500kb.yaml

500 KB

15,000 lines

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Filename
sample-500kb.yaml
Exact size
512,000 bytes
Displayed size
500 KB
MIME type
application/octet-stream
Lines
15,000
Note
with-anchors
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-500kb.yaml

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sample-docker-compose.yaml

3 KB

90 lines

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Filename
sample-docker-compose.yaml
Exact size
3,072 bytes
Displayed size
3 KB
MIME type
application/octet-stream
Lines
90
Note
docker-compose
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-docker-compose.yaml

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sample-k8s-deployment.yaml

2 KB

60 lines

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Filename
sample-k8s-deployment.yaml
Exact size
2,048 bytes
Displayed size
2 KB
MIME type
application/octet-stream
Lines
60
Note
kubernetes-deployment
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-k8s-deployment.yaml

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sample-github-actions.yaml

2.5 KB

75 lines

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Verified file details
Filename
sample-github-actions.yaml
Exact size
2,560 bytes
Displayed size
2.5 KB
MIME type
application/octet-stream
Lines
75
Note
ci-cd-pipeline
License
CC0 / Public Domain
Download URL
https://truefilesize.com/files/yaml/sample-github-actions.yaml

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Use cases for sample YAML files

  • Testing YAML parsers (js-yaml, PyYAML, ruamel.yaml)
  • Validating Docker Compose and Kubernetes configs
  • Testing GitHub Actions / GitLab CI workflow parsing
  • Benchmarking YAML vs JSON vs TOML parsing performance
  • Testing YAML linters and schema validators
  • Verifying anchor/alias expansion in YAML processors

YAML vs JSON vs TOML for configuration

FeatureYAMLJSONTOML
CommentsYes (#)NoYes (#)
ReadabilityExcellentGoodExcellent
Anchors/aliasesYes (&/*)NoNo
Multi-documentYes (---)NoNo
Indentation-sensitiveYes (error-prone)No (braces)No (sections)
Used byK8s, Docker, GitHub ActionsAPIs, package.json, tsconfigCargo, pyproject, Hugo

Common YAML gotchas

# Norway problem: "NO" is parsed as boolean false
country: NO      # ❌ parsed as false
country: "NO"    # ✅ string "NO"

# Version numbers: 1.0 is parsed as float
version: 1.0     # ❌ parsed as 1 (number)
version: "1.0"   # ✅ string "1.0"

# Octal numbers: 0777 is NOT 777
mode: 0777       # ❌ parsed as 511 (octal)
mode: "0777"     # ✅ string "0777"

# Always quote strings that look like booleans/numbers

Technical specifications

Full nameYAML Ain't Markup Language
Extensions.yaml, .yml
MIME typetext/yaml (RFC pending)
Current versionYAML 1.2.2 (2021)
EncodingUTF-8 (recommended)
Superset ofJSON (valid JSON is valid YAML)

Frequently Asked Questions

YAML vs JSON — Which should I use for config files?
YAML is better for configuration files — it supports comments (#), is more human-readable (indentation-based), and has anchors/aliases for DRY configs. JSON is better for data interchange (APIs, package.json) — it's stricter, faster to parse, and has universal support. Since YAML 1.2, any valid JSON is also valid YAML. Use YAML for Docker Compose, Kubernetes, CI/CD. Use JSON for APIs and machine-to-machine data.
YAML syntax — How does indentation work?
YAML uses indentation (spaces only, never tabs) to define structure — similar to Python. Each nesting level adds 2 spaces (convention). A single misplaced space can change meaning or cause parse errors. Key gotchas: 'NO' is parsed as boolean false (quote it: "NO"), 1.0 becomes a float (quote it: "1.0"), 0777 is octal (quote it: "0777"). Use yamllint and an editor with YAML support to catch errors.
YAML anchors explained — How to avoid repetition?
YAML anchors (&name) and aliases (*name) let you define a value once and reuse it, avoiding copy-paste duplication. Example: define defaults with '&defaults' then merge with '<<: *defaults' in each environment. Our sample-500kb.yaml demonstrates anchors with development/staging/production configs that inherit shared settings. Anchors are particularly useful in Docker Compose and CI/CD pipelines.
What is YAML used for in DevOps?
YAML is the dominant configuration format for DevOps: Kubernetes manifests (Deployments, Services, Pods), Docker Compose files, GitHub Actions / GitLab CI workflows, Ansible playbooks, Helm charts, and CloudFormation templates. Our sample files include realistic examples of all these formats for testing parsers and validators.
Should I use .yaml or .yml extension?
Both work — they are interchangeable. The official YAML FAQ recommends .yaml (full word), but .yml is widely used due to historical 3-character extension conventions. Kubernetes and Docker Compose accept both. Pick one and be consistent across your project.

Other data formats

TOMLJSONXML

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