Merge a97ed11efd into 429ce93848

pkg/action/action.go

@@ -372,6 +372,29 @@ func (cfg *Configuration) renderResources(ch *chart.Chart, values common.Values,
 	return hs, b, notes, nil
 }
 
+// ensureKubeCompatibility verifies the chart's kubeVersion requirement.
+func ensureKubeCompatibility(ch *chart.Chart, caps *common.Capabilities) error {
+	if ch == nil || caps == nil {
+		return nil
+	}
+	meta := ch.Metadata
+	if meta == nil {
+		return nil
+	}
+	kubeReq := meta.KubeVersion
+	if kubeReq == "" {
+		return nil
+	}
+
+	kubeVer := caps.KubeVersion.String()
+
+	if chartutil.IsCompatibleRange(kubeReq, kubeVer) {
+		return nil
+	}
+
+	return fmt.Errorf("chart requires kubeVersion: %s which is incompatible with Kubernetes %s", kubeReq, kubeVer)
+}
+
 // RESTClientGetter gets the rest client
 type RESTClientGetter interface {
 	ToRESTConfig() (*rest.Config, error)