guludo / ytt

YAML templating tool that works on YAML structure instead of text

ytt (YAML Templating Tool)

• Website: https://get-ytt.io
• Slack: #k14s in Kubernetes slack
• Docs with topics on language, security, ytt vs other tools, blog posts and talks etc.
• Install: Grab prebuilt binaries from the Releases page

ytt (pronounced spelled out) is a templating tool that understands YAML structure allowing you to focus on your data instead of how to properly escape it.

Features:

• templating works on YAML structure (instead of text)
  • which eliminates variety of problems such as invalid YAML formatting, escaping, etc.
• syntactic sugar for single YAML node conditionals and for loops
  • makes it easier to read densely conditioned templates
• templates are themselves valid YAML files
  • makes them friendly to existing editors and YAML tools
• includes sandboxed "fully featured" Python-like programming language
• allows configuration modularization via functions and libraries

Try it

Try out online playground or download latest binaries from Releases page and run it locally:

ytt -f examples/playground/example-demo/
ytt -f examples/playground/example-demo/ --output-directory tmp/

See examples/playground/ for examples shown on get-ytt.io.

Development

Consult docs/dev.md for build instructions, code structure details.