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Hectal
Phase 7Intermediate8 of 10 in Kubernetes

Helm

Kubernetes' own package manager — templated, versioned, reusable bundles of manifests instead of copy-pasting YAML between environments.

Every phase so far has meant writing raw YAML by hand. That works, but copy-pasting a Deployment/Service/ConfigMap trio between dev, staging, and production — changing a handful of values each time — gets unwieldy fast. Helm is Kubernetes' answer: package a set of manifests into a reusable, versioned, parameterized CHART, exactly the same conceptual leap Linux's own course made from raw files to a real package manager.

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4 topics ~55 min 11 code blocks & diagrams
Start with the first topic
1
7.1

Chart Fundamentals: Charts, Values, and Templates

A Helm chart is a directory of templated YAML manifests plus a set of default values — the same underlying resources you've been writing by hand, now reusable and parameterized instead of copy-pasted.

13 min 1 diagram 1 code practice

2
7.2

Writing Your Own Chart

helm create scaffolds a working starter chart — turning your own Deployment, Service, and ConfigMap from earlier phases into genuinely reusable, parameterized templates is most of the real skill.

14 min 3 code practice

3
7.3

Releases, Upgrades & Rollbacks

Every helm install or upgrade creates a new, numbered revision of a named release — helm rollback is the exact same safety net as kubectl rollout undo, just at the whole-chart level instead of a single Deployment.

14 min 1 diagram 1 code practice

4
7.4

Helm Hooks & Chart Dependencies

Hooks let a chart run something at a specific point in its own lifecycle (like a database migration before the app starts); dependencies let one chart pull in and manage other charts it genuinely relies on.

14 min 1 diagram 3 code practice