9.2 Helm charts
Definition
Helm charts are a collection of files that describe a related set of Kubernetes resources. A single chart might be used to deploy something simple, like a memcached pod, or something complex, like a full web app stack with HTTP servers, databases, caches, and so on.
Helm chart structure
A chart is organized as a collection of files inside of a directory. The directory name is the name of the chart (without versioning information). The chart contains a metadata file that contains information about the chart, as well as a README file that contains optional documentation. The chart may also contain default configuration values, a default Kubernetes manifest file, and helper templates that, when combined, generate Kubernetes manifest files.
$ helm create mychart
Creating mychart
$ tree mychart
mychart
├── Chart.yaml
├── charts
├── templates
│ ├── NOTES.txt
│ ├── _helpers.tpl
│ ├── deployment.yaml
│ ├── ingress.yaml
│ └── service.yaml
└── values.yaml
2 directories, 7 files