{"record":{"id":"da58e26f9efea7a7","repo":"kubernetes/kops","slug":"error-parsing-requiredversion-q-from-channel","errorCode":null,"errorMessage":"error parsing RequiredVersion %q from channel","messagePattern":"error parsing RequiredVersion %q from channel","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/apis/kops/channel.go","lineNumber":215,"sourceCode":"\t}\n\tif recommendedVersion.GT(version) {\n\t\tklog.V(2).Infof(\"RecommendedVersion=%q, Have=%q.  Recommending upgrade\", recommendedVersion, version)\n\t\treturn &recommendedVersion, nil\n\t}\n\tklog.V(4).Infof(\"RecommendedVersion=%q, Have=%q.  No upgrade needed.\", recommendedVersion, version)\n\treturn nil, nil\n}\n\n// IsUpgradeRequired returns true if the current version is not acceptable\nfunc (v *KubernetesVersionSpec) IsUpgradeRequired(version semver.Version) (bool, error) {\n\tif v.RequiredVersion == \"\" {\n\t\tklog.V(2).Infof(\"VersionRecommendationSpec does not specify RequiredVersion\")\n\t\treturn false, nil\n\t}\n\n\trequiredVersion, err := util.ParseKubernetesVersion(v.RequiredVersion)\n\tif err != nil {\n\t\treturn false, fmt.Errorf(\"error parsing RequiredVersion %q from channel\", v.RequiredVersion)\n\t}\n\tif requiredVersion.GT(version) {\n\t\tklog.V(2).Infof(\"RequiredVersion=%q, Have=%q.  Requiring upgrade\", requiredVersion, version)\n\t\treturn true, nil\n\t}\n\tklog.V(4).Infof(\"RequiredVersion=%q, Have=%q.  No upgrade needed.\", requiredVersion, version)\n\treturn false, nil\n}\n\n// IsUpgradeRequired returns true if the current version is not acceptable\nfunc (v *KopsVersionSpec) IsUpgradeRequired(version semver.Version) (bool, error) {\n\tif v.RequiredVersion == \"\" {\n\t\tklog.V(2).Infof(\"VersionRecommendationSpec does not specify RequiredVersion\")\n\t\treturn false, nil\n\t}\n\n\trequiredVersion, err := semver.ParseTolerant(v.RequiredVersion)\n\tif err != nil {","sourceCodeStart":197,"sourceCodeEnd":233,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/pkg/apis/kops/channel.go#L197-L233","documentation":"IsUpgradeRequired validates the channel's spec.kubernetesVersion.requiredVersion with util.ParseKubernetesVersion. This error means the RequiredVersion string in the channel is not a parseable Kubernetes version, so kOps cannot decide whether the cluster must upgrade.","triggerScenarios":"IsUpgradeRequired on a channel whose RequiredVersion fails util.ParseKubernetesVersion — leading 'v', pre-release/build metadata, or fewer than three numeric components.","commonSituations":"Custom channel with requiredVersion: v1.24 or 1.24.0-rc1 where the strict parser rejects the suffix; channel edited by tooling that prefixed 'v'; copy of recommendedVersion into requiredVersion with extra text.","solutions":["Set requiredVersion to a plain three-component version, e.g. 1.24.7.","Check the strictness of util.ParseKubernetesVersion in your kOps version; strip 'v' and any pre-release/build suffixes.","If a minimum version range is needed, express it within what the parser supports or bump requiredVersion to a concrete patch release."],"exampleFix":"// before\nrequiredVersion: v1.24.0-beta.1\n// after\nrequiredVersion: 1.24.0","handlingStrategy":"validation","validationCode":"rq := channel.Spec.KubernetesVersion.RequiredVersion\nif _, err := util.ParseKubernetesVersion(rq); err != nil {\n    return fmt.Errorf(\"channel requiredVersion %q invalid\", rq)\n}","typeGuard":"func isValidRequiredVersion(v string) bool { _, err := util.ParseKubernetesVersion(v); return err == nil }","tryCatchPattern":"required, err := channel.IsUpgradeRequired(version)\nif err != nil && strings.Contains(err.Error(), \"RequiredVersion\") {\n    // fail closed: treat unparseable required version as channel bug\n    return fmt.Errorf(\"channel requiredVersion invalid: %w\", err)\n}","preventionTips":["Keep requiredVersion a plain x.y.z string without pre-release suffixes","Mirror-validate requiredVersion alongside recommendedVersion in channel CI","Copy values carefully when deriving requiredVersion from other fields"],"tags":["kops","channel","version-parsing"],"backgroundTag":"invalid-version-string","analyzedSha":"4c8573c808a73d578c5eadc86d410646ea0b0d73","analyzedAt":"2026-09-05T04:13:19.212Z","contentChangedAt":"2026-09-05T04:13:19.212Z","schemaVersion":2},"datasetVersion":"2026-09-12T12:17:11.808Z"}