{"record":{"id":"197d879dd5b541c7","repo":"kubernetes/kops","slug":"unable-to-parse-env-var-kops-base-url-q-as-a-url","errorCode":null,"errorMessage":"unable to parse env var KOPS_BASE_URL %q as a url: %v","messagePattern":"unable to parse env var KOPS_BASE_URL %q as a url: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/nodemodel/wellknownassets/kopsassets.go","lineNumber":58,"sourceCode":"\t// Avoid repeated logging\n\tif kopsBaseURL != nil {\n\t\tklog.V(8).Infof(\"Using cached kopsBaseUrl url: %q\", kopsBaseURL.String())\n\t\treturn copyBaseURL(kopsBaseURL)\n\t}\n\n\tbaseURLString := os.Getenv(\"KOPS_BASE_URL\")\n\tvar err error\n\tif baseURLString == \"\" {\n\t\tbaseURLString = fmt.Sprintf(defaultKopsBaseURL, kops.Version)\n\t\tklog.V(8).Infof(\"Using default base url: %q\", baseURLString)\n\t\tkopsBaseURL, err = url.Parse(baseURLString)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"unable to parse %q as a url: %v\", baseURLString, err)\n\t\t}\n\t} else {\n\t\tkopsBaseURL, err = url.Parse(baseURLString)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"unable to parse env var KOPS_BASE_URL %q as a url: %v\", baseURLString, err)\n\t\t}\n\t\tklog.Warningf(\"Using base url from env var: KOPS_BASE_URL=%q\", baseURLString)\n\n\t\t// The last path component of KOPS_BASE_URL is the artifact version.\n\t\t// Override kops.Version so image tags in manifests match the sideloaded images.\n\t\tif v := path.Base(kopsBaseURL.Path); v != \"\" && v != \".\" && v != \"/\" && v != kops.Version {\n\t\t\tklog.Infof(\"Overriding kops version from KOPS_BASE_URL: %q -> %q\", kops.Version, v)\n\t\t\tkops.Version = v\n\t\t}\n\t}\n\n\treturn copyBaseURL(kopsBaseURL)\n}\n\n// copyBaseURL makes a copy of the base url or the path.Joins can append stuff to this URL\nfunc copyBaseURL(base *url.URL) (*url.URL, error) {\n\tu, err := url.Parse(base.String())\n\tif err != nil {","sourceCodeStart":40,"sourceCodeEnd":76,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/pkg/nodemodel/wellknownassets/kopsassets.go#L40-L76","documentation":"The user-set KOPS_BASE_URL environment variable is not a parseable URL. Unlike the default-URL failure, this one is directly caused by operator configuration and is checked before any downloads happen.","triggerScenarios":"Thrown at pkg/nodemodel/wellknownassets/kopsassets.go:58 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Fix KOPS_BASE_URL to a valid absolute URL (e.g. https://artifacts.example/kops/<version>/)","Unset KOPS_BASE_URL to fall back to the default distribution location"],"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":"2026-09-12T12:17:11.808Z"}