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Helm Namespace Example

This example exercises namespace transformation on resources generated from a local Helm chart.

The example kustomization sets a namespace for Helm-generated resources that do not already declare one, while preserving any namespace explicitly emitted by the chart.

Build the example

This example defines the helm command as:

helmCommand=${MYGOBIN:-~/go/bin}/helmV3

Use the checked-in example:

EXAMPLE_HOME=examples/helmNamespace

Build the example with Helm enabled:

output=$(kustomize build \
  --enable-helm \
  --helm-command "$helmCommand" \
  "$EXAMPLE_HOME")
printf '%s\n' "$output"

The Service is emitted by the chart without a namespace, so the example namespace should be applied:

printf '%s\n' "$output" | grep -A4 'name: chart-service' | grep 'namespace: top-level-ns'

The ConfigMap is emitted by the chart with an explicit namespace, so that value should be preserved:

printf '%s\n' "$output" | grep -A4 'name: chart-config' | grep 'namespace: chart-owned-ns'

The Secret is emitted by the chart with an release namespace, so that value should be preserved:

printf '%s\n' "$output" | grep -A4 'name: chart-secret' | grep 'namespace: chart-ns'