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A complete walkthrough building a Helm chart for a simple application — templates, values, and the conventions that make a chart genuinely reusable rather than a one-off wrapper around raw YAML.
A helm upgrade fails partway, or a release gets stuck in 'pending-upgrade' state, blocking every subsequent operation on it. Here's how to actually recover instead of getting stuck retrying the same failing command.
Started as a Deis project on October 15, 2015, Helm brought familiar package-manager concepts to Kubernetes — later merging with Google's Deployment Manager to become the Helm 2 the ecosystem would standardize on.