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Helm Academy · Lesson

The Double-Brace Action Syntax

How template directives embed inside YAML.

Code Inside YAML

Helm charts are not plain YAML. They are templates: ordinary YAML sprinkled with small bits of logic that Helm fills in for you. ✨

The Double Braces

Every template directive lives between two curly braces. The {{ }} pair is the doorway from static YAML into Helm's template engine.

name: {{ .Release.Name }}

All lessons in this course

  1. The Double-Brace Action Syntax
  2. Trimming Whitespace with Dash Markers
  3. Comments and Quoting in Templates
  4. Common YAML Indentation Traps
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