Helm for Kubernetes Application Delivery

Module 1: Helm fundamentals and workflow

• Helm architecture: CLI, release storage, lifecycle
• Installing and managing releases: install, upgrade, rollback, uninstall
• Chart structure: Chart.yaml, templates, values, helpers
• Using public repositories: search, add, dependency update

Module 2: Authoring charts and templating

• Template syntax: functions, pipelines, conditional and range
• Named templates and helper patterns for reuse
• Managing dependencies: application vs library charts
• Rendering manifests and dry runs: template, lint, and diff

Module 3: Configuration and environments

• Values strategy: base values, environment overlays, and overrides files
• Secrets handling: sealed secrets or external stores integration patterns
• Keeping configuration DRY: global values and common labels or annotations
• Versioning and promoting releases across environments

Module 4: Operations, quality, and troubleshooting

• Upgrade safety strategies: hooks, pre or post checks, health gating
• Rollbacks and change tracking: history, revisions, provenance
• Hosting and publishing: OCI or index based repositories
• Troubleshooting common issues: failed hooks, bad templates, drift