helm-charts

StackState curated applications for Kubernetes.

Pre-commit hooks

This Helm repository has pre-commit hooks for Helm specific needs:

• Makes sure all charts pass a helm lint check.
• Makes sure all shell scripts pass the shellcheck.
• Updates the README.md file of all charts based on comments in that chart's values.yaml file.

Install pre-commit binary

The binary for pre-commit can be installed via Homebrew:

$ brew install pre-commit

Install git hooks

After the pre-commit binary is installed, go to this repository's directory, and run the following commmands to install the git hook:

$ pre-commit install
$ pre-commit install-hooks

Install hook dependencies

The pre-commit hooks themselves call binaries under the hood; they can be installed via the following command:

$ brew install helm shellcheck
$ brew install norwoodj/tap/helm-docs

NOTE: The templates for README generation are only compatible with helm-docs 0.15+.

Testing the Helm charts

The Helm chart repository supports testing Helm charts using the Terratest library. In order to run tests for a chart, you can invoke the following command from the root of the repository:

$ go test ./stable/<chart>/test/...

To run integration tests put them in an itest directory and run:

$ go test ./stable/<chart>/itest/...

The test-set for a chart is in the stable/<chart>/itest directory.

You are encouraged to adding more tests when working on the Helm charts ;).

Chart build scripting

We use gawk (instead of awk) for consistent local and container scripting.

$ brew install gawk

$ apk add gawk