istio/istio · error

failed to marshal policies: %v

Error message

failed to marshal policies: %v

What it means

Error "failed to marshal policies: %v" thrown in istio/istio.

Source

Thrown at istioctl/pkg/writer/ztunnel/configdump/policies.go:77

		fmt.Fprintf(w, "%v\t%v\t%v\t%v\n",
			pol.Namespace, pol.Name, pol.Action, pol.Scope)
	}
	return w.Flush()
}

// PrintPolicyDump prints the relevant services in the config dump to the ConfigWriter stdout
func (c *ConfigWriter) PrintPolicyDump(filter PolicyFilter, outputFormat string) error {
	zDump := c.ztunnelDump
	policies := slices.Filter(zDump.Policies, filter.Verify)
	slices.SortFunc(policies, func(a, b *ZtunnelPolicy) int {
		if r := cmp.Compare(a.Namespace, b.Namespace); r != 0 {
			return r
		}
		return cmp.Compare(a.Name, b.Name)
	})
	out, err := json.MarshalIndent(policies, "", "    ")
	if err != nil {
		return fmt.Errorf("failed to marshal policies: %v", err)
	}
	if outputFormat == "yaml" {
		if out, err = yaml.JSONToYAML(out); err != nil {
			return err
		}
	}
	fmt.Fprintln(c.Stdout, string(out))
	return nil
}

View on GitHub (pinned to 8dc789c5cf)

When it happens

Trigger: Thrown at istioctl/pkg/writer/ztunnel/configdump/policies.go:77 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/bb2562fb7bb30f59. Report an issue: GitHub.