kubernetes/kops · error

Multiple servers found with name %s

Error message

Multiple servers found with name %s

What it means

Instance discovery matched more than one server whose name or 'kops name' metadata equals the expected instance name. The name-to-server mapping must be unique; duplicates make it ambiguous which server represents the task, often caused by leftover servers from a previous cluster or manual copies.

Source

Thrown at upup/pkg/fi/cloudup/openstacktasks/instance.go:190

			continue
		}
		metadataName := ""
		val, ok = server.Metadata[openstack.TagKopsName]
		if ok {
			metadataName = val
		}
		// name or metadata tag should match to instance name
		// this is needed for backwards compatibility
		if server.Name == fi.ValueOf(e.Name) || metadataName == fi.ValueOf(e.Name) {
			filteredList = append(filteredList, server)
		}
	}

	if filteredList == nil {
		return nil, nil
	}
	if len(filteredList) > 1 {
		return nil, fmt.Errorf("Multiple servers found with name %s", fi.ValueOf(e.Name))
	}

	server := filteredList[0]
	actual := &Instance{
		ID:               new(server.ID),
		Name:             e.Name,
		SSHKey:           new(server.KeyName),
		Lifecycle:        e.Lifecycle,
		Metadata:         server.Metadata,
		Role:             new(server.Metadata["KopsRole"]),
		AvailabilityZone: e.AvailabilityZone,
		GroupName:        e.GroupName,
		ConfigDrive:      e.ConfigDrive,
		Status:           new(server.Status),
	}

	ports, err := cloud.ListPorts(ports.ListOpts{
		DeviceID: server.ID,

View on GitHub (pinned to 4c8573c808)

Solutions

1. List servers matching the name and inspect their k8s/kops metadata tags
2. Delete or rename stale duplicate servers
3. Re-run discovery once names are unique

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/openstacktasks/instance.go:190 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/68864011a0ab019c. Report an issue: GitHub.