kubernetes/kops · error

failed to extract monitor pages: %s

Error message

failed to extract monitor pages: %s

What it means

The monitor list call succeeded but extracting monitor objects from the returned pages failed, indicating a malformed/unexpected response body from the load-balancer API.

Source

Thrown at upup/pkg/fi/cloudup/openstack/loadbalancer.go:84

	return poolMonitor, nil
}

func (c *openstackCloud) ListMonitors(opts monitors.ListOpts) (monitorList []monitors.Monitor, err error) {
	return listMonitors(c, opts)
}

func listMonitors(c OpenstackCloud, opts monitors.ListOpts) (monitorList []monitors.Monitor, err error) {
	if c.LoadBalancerClient() == nil {
		return monitorList, fmt.Errorf("loadbalancer support not available in this deployment")
	}
	done, err := vfs.RetryWithBackoff(readBackoff, func() (bool, error) {
		allPages, err := monitors.List(c.LoadBalancerClient(), opts).AllPages(context.TODO())
		if err != nil {
			return false, fmt.Errorf("failed to list monitors: %s", err)
		}
		monitorList, err = monitors.ExtractMonitors(allPages)
		if err != nil {
			return false, fmt.Errorf("failed to extract monitor pages: %s", err)
		}
		return true, nil
	})
	if !done {
		if err == nil {
			err = wait.ErrWaitTimeout
		}
		return monitorList, err
	}
	return monitorList, nil
}

func (c *openstackCloud) DeleteMonitor(monitorID string) error {
	return deleteMonitor(c, monitorID)
}

func deleteMonitor(c OpenstackCloud, monitorID string) error {
	if c.LoadBalancerClient() == nil {

View on GitHub (pinned to 4c8573c808)

Solutions

1. Check OpenStack/gophercloud version compatibility
2. Retry the listing in case of a one-off corrupted response
3. Report persistent extraction failures with your Octavia version

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/openstack/loadbalancer.go:84 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/bcf772da8c3f75a8. Report an issue: GitHub.