AppHost logoAppHost

Devii · Cloud · 2026-05-19 · 7 min read

Share

Helm Charts: Templating And Packaging Kubernetes Applications

Chart structure, values.yaml overrides, and release lifecycle on clusters.

**Helm** is the package manager for Kubernetes. A **chart** bundles templated manifests (`templates/`), default **values**, and metadata (`Chart.yaml`). Docs: `helm.sh/docs`.

`helm install` renders templates with values and creates a **release** tracked in cluster metadata (Helm 3 uses secrets or configmaps). Upgrades use `helm upgrade` with revised values or chart versions.

Configuration management session
Configuration management session

Best practices: pin chart versions, separate environment values files, and use `helm template` in CI to diff manifests before apply. OCI registries can host charts alongside container images.

Helm does not replace GitOps controllers; Argo CD and Flux often deploy Helm charts from Git. Validate chart hooks (pre-install jobs) do not block rollbacks.