{"record":{"id":"e4450374dd42bd94","repo":"kubernetes/kops","slug":"error-generating-private-key-v","errorCode":null,"errorMessage":"error generating private key: %v","messagePattern":"error generating private key: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cmd/kops/create_keypair.go","lineNumber":207,"sourceCode":"\tif options.PrivateKeyPath != \"\" {\n\t\toptions.PrivateKeyPath = utils.ExpandPath(options.PrivateKeyPath)\n\t\tprivateKeyBytes, err := os.ReadFile(options.PrivateKeyPath)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"error reading user provided private key %q: %v\", options.PrivateKeyPath, err)\n\t\t}\n\n\t\tprivateKey, err = pki.ParsePEMPrivateKey(privateKeyBytes)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"error loading private key %q: %v\", privateKeyBytes, err)\n\t\t}\n\t}\n\n\tvar cert *pki.Certificate\n\tif options.CertPath == \"\" {\n\t\tif privateKey == nil {\n\t\t\tprivateKey, err = pki.GeneratePrivateKey()\n\t\t\tif err != nil {\n\t\t\t\treturn fmt.Errorf(\"error generating private key: %v\", err)\n\t\t\t}\n\t\t}\n\n\t\tserial := pki.BuildPKISerial(time.Now().UnixNano())\n\t\treq := pki.IssueCertRequest{\n\t\t\tType:       \"ca\",\n\t\t\tSubject:    pkix.Name{CommonName: name, SerialNumber: serial.String()},\n\t\t\tSerial:     serial,\n\t\t\tPrivateKey: privateKey,\n\t\t}\n\t\tcert, _, _, err = pki.IssueCert(ctx, &req, nil)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"error issuing certificate: %v\", err)\n\t\t}\n\t} else {\n\t\toptions.CertPath = utils.ExpandPath(options.CertPath)\n\t\tcertBytes, err := os.ReadFile(options.CertPath)\n\t\tif err != nil {","sourceCodeStart":189,"sourceCodeEnd":225,"githubUrl":"https://github.com/kubernetes/kops/blob/4c8573c808a73d578c5eadc86d410646ea0b0d73/cmd/kops/create_keypair.go#L189-L225","documentation":"This error wraps a failure from pki.GeneratePrivateKey() while `kops create keypair` generates a fresh private key for a CA keyset (used when no --cert path is supplied). The crypto backend failed to produce a usable private key, so keypair creation aborts. It indicates an internal crypto/RNG failure rather than a user-input problem.","triggerScenarios":"Running `kops create keypair <cluster> <keyset>` without --cert (or the rotation path) so pki.GeneratePrivateKey() is invoked and returns a non-nil error, e.g. a crypto/rand entropy source failure.","commonSituations":"Running kOps in a constrained container/VM with a broken or exhausted entropy source; hardened seccomp profiles blocking getrandom(2); a bug or version mismatch in the crypto library.","solutions":["Retry the command — entropy failures are often transient.","Verify the host entropy/PRNG is healthy (/dev/urandom readable, getrandom not blocked).","Re-run inside a known-good environment/container image.","If persistent, file a kOps issue including the wrapped underlying error text."],"exampleFix":null,"handlingStrategy":"retry","validationCode":"// Go: verify the host entropy source before invoking kOps\nf, err := os.Open(\"/dev/urandom\")\nif err != nil {\n    return fmt.Errorf(\"entropy source unavailable: %w\", err)\n}\nf.Close()","typeGuard":null,"tryCatchPattern":"if err := retry(3, backoff, runCreateKeypair); err != nil {\n    if strings.Contains(err.Error(), \"error generating private key\") {\n        // entropy/env issue: escalate after retries\n    }\n}","preventionTips":["Run kOps on hosts with a healthy entropy source (modern kernels: /dev/urandom is always adequate).","Avoid hardened seccomp profiles that block getrandom(2).","Retry keypair creation before escalating.","Pin to a supported kOps release."],"tags":["pki","keypair","crypto"],"backgroundTag":"private-key-generation-failed","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"}