kubernetes/kops · error

error listing installed packages: %v: %s

Error message

error listing installed packages: %v: %s

What it means

Error "error listing installed packages: %v: %s" thrown in kubernetes/kops.

Source

Thrown at upup/pkg/fi/nodeup/nodetasks/package.go:159

	if d.IsRHELFamily() {
		return e.findYum(c)
	}

	return nil, fmt.Errorf("unsupported package system")
}

func (e *Package) findDpkg(c *fi.NodeupContext) (*Package, error) {
	args := []string{"dpkg-query", "-f", "${db:Status-Abbrev}\\t${Version}\\n", "-W", e.Name}
	human := strings.Join(args, " ")

	klog.V(2).Infof("Listing installed packages: %s", human)
	cmd := exec.Command(args[0], args[1:]...)
	output, err := cmd.CombinedOutput()
	if err != nil {
		if strings.Contains(string(output), "no packages found") {
			return nil, nil
		}
		return nil, fmt.Errorf("error listing installed packages: %v: %s", err, string(output))
	}

	installed := false
	var healthy *bool
	installedVersion := ""
	for _, line := range strings.Split(string(output), "\n") {
		if line == "" {
			continue
		}

		tokens := strings.Split(line, "\t")
		if len(tokens) != 2 {
			return nil, fmt.Errorf("error parsing dpkg-query line %q", line)
		}
		state := strings.TrimSpace(tokens[0])
		version := strings.TrimSpace(tokens[1])

		switch state {

View on GitHub (pinned to 4c8573c808)

When it happens

Trigger: Thrown at upup/pkg/fi/nodeup/nodetasks/package.go:159 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/b771b0e10b07d553. Report an issue: GitHub.