unable to marshal bootstrap in Envoy config dump: %v

Error message

unable to marshal bootstrap in Envoy config dump: %v

What it means

Error "unable to marshal bootstrap in Envoy config dump: %v" thrown in istio/istio.

Source

Thrown at istioctl/pkg/writer/envoy/configdump/configdump.go:66

	if err != nil {
		return fmt.Errorf("error unmarshalling config dump response from Envoy: %v", err)
	}
	c.configDump = w
	return nil
}

// PrintBootstrapDump prints just the bootstrap config dump to the ConfigWriter stdout
func (c *ConfigWriter) PrintBootstrapDump(outputFormat string) error {
	if c.configDump == nil {
		return fmt.Errorf("config writer has not been primed")
	}
	bootstrapDump, err := c.configDump.GetBootstrapConfigDump()
	if err != nil {
		return err
	}
	out, err := protomarshal.ToJSONWithIndent(bootstrapDump, "    ")
	if err != nil {
		return fmt.Errorf("unable to marshal bootstrap in Envoy config dump: %v", err)
	}
	if outputFormat == "yaml" {
		outbyte, err := yaml.JSONToYAML([]byte(out))
		if err != nil {
			return err
		}
		out = string(outbyte)
	}
	fmt.Fprintln(c.Stdout, out)
	return nil
}

// PrintSecretDump prints just the secret config dump to the ConfigWriter stdout
func (c *ConfigWriter) PrintSecretDump(outputFormat string) error {
	if c.configDump == nil {
		return fmt.Errorf("config writer has not been primed")
	}
	secretDump, err := c.configDump.GetSecretConfigDump()

View on GitHub (pinned to 8dc789c5cf)

When it happens

Trigger: Thrown at istioctl/pkg/writer/envoy/configdump/configdump.go:66 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/06d32dd72ec952c3. Report an issue: GitHub.