Playground Examples Index

Basics ¶

How Plain YAML is parsed ¶

https://carvel.dev/ytt/#example:example-plain-yaml

Datatypes in Starlark are encoded in YAML ¶

https://carvel.dev/ytt/#example:example-datatypes

Local variables within a template ¶

https://carvel.dev/ytt/#example:example-variable

Surrounding YAML with an if statement ¶

https://carvel.dev/ytt/#example:example-if

Looping or Generating YAML with a for loop ¶

https://carvel.dev/ytt/#example:example-for

Making a mini-template or extracting a chunk of YAML using a function ¶

https://carvel.dev/ytt/#example:example-function

Including helper functions from another file using load() ¶

https://carvel.dev/ytt/#example:example-load

Encoding or hashing a string ¶

https://carvel.dev/ytt/#example:example-load-ytt-library-module

Including a function from a library ¶

https://carvel.dev/ytt/#example:example-load-custom-library-module

Asserting on a particular value or condition ¶

https://carvel.dev/ytt/#example:example-assert

Declaring and using Data Values ¶

https://carvel.dev/ytt/#example:example-load-data-values

Loading and including data from a text or CSV file ¶

https://carvel.dev/ytt/#example:example-load-data-files

Templating strings and key names using text templating ¶

https://carvel.dev/ytt/#example:example-text-template

Inserting a YAML fragment or a value using template.replace() ¶

https://carvel.dev/ytt/#example:example-replace

Modifying or editing a YAML fragment with an overlay ¶

https://carvel.dev/ytt/#example:example-overlay

Writing an overlay that applies over all the other documents ¶

https://carvel.dev/ytt/#example:example-overlay-files

Splitting data values into multiple files ¶

https://carvel.dev/ytt/#example:example-multiple-data-values

Grouping and using multiple templates as a set using libraries ¶

https://carvel.dev/ytt/#example:example-ytt-library-module

Simple Kubernetes example with a Pod and a Service ¶

https://carvel.dev/ytt/#example:example-k8s-ingress-single

Kubernetes example producing multiple applications from data values ¶

https://carvel.dev/ytt/#example:example-k8s-ingress-multiple

Helm Chart like output from ytt ¶

https://carvel.dev/ytt/#example:example-k8s-helm-ish

A complete working example of many ytt features ¶

https://carvel.dev/ytt/#example:example-demo

Overlays ¶

Overlay matching on all documents ¶

https://carvel.dev/ytt/#example:example-match-all-docs

Overlay matching on specific documents ¶

https://carvel.dev/ytt/#example:example-match-subset-docs

Overlay matching on specific documents using a YAML Fragment ¶

https://carvel.dev/ytt/#example:example-match-subset-by-fragment

Overlay matching on a specific document by index ¶

https://carvel.dev/ytt/#example:example-match-by-index

Overlay matching on an array item by a specific field or key ¶

https://carvel.dev/ytt/#example:example-match-by-key

Overlay that inserts an array item at a specific spot ¶

https://carvel.dev/ytt/#example:example-insert-array-item

Overlay that replaces an array item ¶

https://carvel.dev/ytt/#example:example-replace-array-item

Overlay that removes or deletes an array item ¶

https://carvel.dev/ytt/#example:example-remove-array-item

Overlay that edits or modifies an array item in place ¶

https://carvel.dev/ytt/#example:example-edit-array-item

Overlay that appends an array item (inserts at the end) ¶

https://carvel.dev/ytt/#example:example-append-array-item

Overlay that completely replaces the contents of an array ¶

https://carvel.dev/ytt/#example:example-replace-array

Overlay that adds a new map item or field ¶

https://carvel.dev/ytt/#example:example-add-map-item

Overlay that edits the value of a map item or field ¶

https://carvel.dev/ytt/#example:example-edit-map-value

Overlay that removes or deletes a map item or field ¶

https://carvel.dev/ytt/#example:example-remove-map-item

Overlay that renames the key or field of a map item ¶

https://carvel.dev/ytt/#example:example-rename-key-in-map

Overlay that add or appends a map into an array item ¶

https://carvel.dev/ytt/#example:example-append-map-to-array