A Helm chart is a package containing all the resource definitions needed to run an application on Kubernetes, written as templates plus default values.
mychart/
Chart.yaml # Chart metadata
values.yaml # Default configuration values
charts/ # Dependency charts
templates/ # Kubernetes manifest templates
deployment.yaml
service.yaml
ingress.yaml
_helpers.tpl # Template helpers
.helmignore # Files to ignore during packaging
Chart.yamlholds the chart's name, version and description, and it lists the chart's dependencies.values.yamlholds the defaults the templates render with.templates/holds the Kubernetes manifest templates.charts/holds the charts this one depends on.- A
README.md, when present, documents how to use the chart.
Charts are portable and reusable across environments, because you set the configuration through values.
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