validationPattern   = `^\w+:(debug|error|warn|info|debug)`
)

func istiodLogCmd(ctx cli.Context) *cobra.Command {
	var controlzPort int
	var opts clioptions.ControlPlaneOptions
	outputLogLevel := ""
	stackTraceLevel := ""

	// output format (yaml or short)
	outputFormat := "short"

	logCmd := &cobra.Command{