istio/istio · error

invalid version %v, expected format like '1.0'

Error message

invalid version %v, expected format like '1.0'

What it means

Error "invalid version %v, expected format like '1.0'" thrown in istio/istio.

Source

Thrown at istioctl/pkg/precheck/precheck.go:135

	cmd.PersistentFlags().BoolVar(&skipControlPlane, "skip-controlplane", false, "skip checking the control plane")
	cmd.PersistentFlags().Var(&outputThreshold, "output-threshold",
		fmt.Sprintf("The severity level of precheck at which to display messages. Valid values: %v", diag.GetAllLevelStrings()))
	cmd.PersistentFlags().StringVarP(&msgOutputFormat, "output", "o", formatting.LogFormat,
		fmt.Sprintf("Output format: one of %v", formatting.MsgOutputFormatKeys))
	cmd.PersistentFlags().StringVarP(&fromCompatibilityVersion, "from-version", "f", "",
		"check changes since the provided version")
	opts.AttachControlPlaneFlags(cmd)
	return cmd
}

func checkFromVersion(ctx cli.Context, revision, version string) (diag.Messages, error) {
	cli, err := ctx.CLIClientWithRevision(ctx.RevisionOrDefault(revision))
	if err != nil {
		return nil, err
	}
	major, minors, ok := strings.Cut(version, ".")
	if !ok {
		return nil, fmt.Errorf("invalid version %v, expected format like '1.0'", version)
	}
	if major != "1" {
		return nil, fmt.Errorf("expected major version 1, got %v", version)
	}
	minor, err := strconv.Atoi(minors)
	if err != nil {
		return nil, fmt.Errorf("minor version is not a number: %v", minors)
	}

	var messages diag.Messages = make([]diag.Message, 0)

	if minor <= 21 {
		if err := checkTracing(cli, &messages); err != nil {
			return nil, err
		}
	}
	return messages, nil
}

View on GitHub (pinned to 8dc789c5cf)

When it happens

Trigger: Thrown at istioctl/pkg/precheck/precheck.go:135 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of istio/istio@8dc789c5cf (2026-08-15). Data as JSON: /api/errors/a313747d721b5676. Report an issue: GitHub.