Post-render with kustomize

Patch rendered manifests via kustomize without forking the upstream chart

helm upgrade --install <name> ./chart --post-renderer ./kustomize-hook.sh -n <ns>
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More helm commands

  • Pull and unpack OCI chart
    helm pull oci://<host>/charts/<name> --version 1.2.3 --untar --untardir ./charts

    Vendor an OCI chart locally for inspection or air-gapped installs

  • Install chart with values file
    helm install <release> <chart> -f values.yaml -n <ns> --create-namespace

    Deploy a chart; creates namespace if it doesn't exist

  • Upgrade or install (idempotent)
    helm upgrade --install <release> <chart> -f values.yaml -n <ns>

    Safe in CI — installs if absent, upgrades if present

  • Diff before upgrade
    helm diff upgrade <release> <chart> -f values.yaml -n <ns>

    Show exactly what will change (requires helm-diff plugin)

  • Render templates locally
    helm template <release> <chart> -f values.yaml --debug

    Output rendered YAML to stdout without deploying

all 54 helm commands