{"record":{"id":"3f157a659d4daf45","repo":"kubernetes/kops","slug":"unable-to-find-runc-version","errorCode":null,"errorMessage":"unable to find runc version","messagePattern":"unable to find runc version","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/nodemodel/wellknownassets/runc.go","lineNumber":63,"sourceCode":"\n\tcanonicalURL := \"\"\n\tknownHash := \"\"\n\n\tif runc.Packages != nil {\n\t\tif arch == architectures.ArchitectureAmd64 && runc.Packages.UrlAmd64 != nil && runc.Packages.HashAmd64 != nil {\n\t\t\tcanonicalURL = fi.ValueOf(runc.Packages.UrlAmd64)\n\t\t\tknownHash = fi.ValueOf(runc.Packages.HashAmd64)\n\t\t}\n\t\tif arch == architectures.ArchitectureArm64 && runc.Packages.UrlArm64 != nil && runc.Packages.HashArm64 != nil {\n\t\t\tcanonicalURL = fi.ValueOf(runc.Packages.UrlArm64)\n\t\t\tknownHash = fi.ValueOf(runc.Packages.HashArm64)\n\t\t}\n\t}\n\n\tif canonicalURL == \"\" {\n\t\tversion := fi.ValueOf(runc.Version)\n\t\tif version == \"\" {\n\t\t\treturn nil, fmt.Errorf(\"unable to find runc version\")\n\t\t}\n\t\tu, err := findRuncVersionUrl(arch, version)\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\t\tcanonicalURL = u\n\t}\n\n\treturn buildFileAsset(assetBuilder, canonicalURL, knownHash)\n}\n\nfunc findRuncVersionUrl(arch architectures.Architecture, version string) (string, error) {\n\tsv, err := semver.ParseTolerant(version)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"unable to parse version string: %q\", version)\n\t}\n\tif sv.LT(semver.MustParse(\"1.1.0\")) {\n\t\treturn \"\", fmt.Errorf(\"unsupported runc version: %q\", version)","sourceCodeStart":45,"sourceCodeEnd":81,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/pkg/nodemodel/wellknownassets/runc.go#L45-L81","documentation":"Fires when no canonical runc download URL could be derived: neither arch-specific packages URLs (UrlAmd64/UrlArm64 with hashes) were set in containerd.runc.packages, nor was a containerd.runc.version string present to construct a URL from. FindRuncAsset cannot fetch the runc binary asset for the instance group's architecture.","triggerScenarios":"Thrown at pkg/nodemodel/wellknownassets/runc.go:63 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set containerd.runc.version in the cluster spec (e.g. 1.1.4)","Provide containerd.runc.packages.urlAmd64/hashAmd64 and urlArm64/hashArm64 for the target architecture","Verify the instance group's architecture matches the packages URLs that are configured"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4c8573c808a73d578c5eadc86d410646ea0b0d73","analyzedAt":"2026-09-05T04:13:19.212Z","contentChangedAt":"2026-09-05T04:13:19.212Z","schemaVersion":2},"datasetVersion":"2026-09-12T07:17:12.445Z"}