kubernetes/kops · error

creating/updating route table: %w

Error message

creating/updating route table: %w

What it means

Wrapped error from network.RouteTablesClient.BeginCreateOrUpdate when starting the asynchronous create/update of an Azure route table. It means the initial PUT request to the Azure Resource Manager was rejected before the polling loop began. kOps uses this while reconciling route tables for cluster networking.

Source

Thrown at upup/pkg/fi/cloudup/azure/routetable.go:45

)

// RouteTablesClient is a client for managing route tables.
type RouteTablesClient interface {
	CreateOrUpdate(ctx context.Context, resourceGroupName, routeTableName string, parameters network.RouteTable) (*network.RouteTable, error)
	List(ctx context.Context, resourceGroupName string) ([]*network.RouteTable, error)
	Delete(ctx context.Context, resourceGroupName, vnetName string) error
}

type routeTablesClientImpl struct {
	c *network.RouteTablesClient
}

var _ RouteTablesClient = (*routeTablesClientImpl)(nil)

func (c *routeTablesClientImpl) CreateOrUpdate(ctx context.Context, resourceGroupName, routeTableName string, parameters network.RouteTable) (*network.RouteTable, error) {
	future, err := c.c.BeginCreateOrUpdate(ctx, resourceGroupName, routeTableName, parameters, nil)
	if err != nil {
		return nil, fmt.Errorf("creating/updating route table: %w", err)
	}
	rt, err := future.PollUntilDone(ctx, nil)
	if err != nil {
		return nil, fmt.Errorf("waiting for route table create/update completion: %w", err)
	}
	return &rt.RouteTable, err
}

func (c *routeTablesClientImpl) List(ctx context.Context, resourceGroupName string) ([]*network.RouteTable, error) {
	if resourceGroupName == "" {
		return nil, nil
	}

	var l []*network.RouteTable
	pager := c.c.NewListPager(resourceGroupName, nil)
	for pager.More() {
		resp, err := pager.NextPage(ctx)
		if err != nil {

View on GitHub (pinned to 4c8573c808)

Solutions

1. Inspect the wrapped error for HTTP status: 403 means grant Microsoft.Network/routeTables/write to the identity
2. Verify the resource group exists and is in the expected region
3. Validate the RouteTable parameters (location, properties) match the target resource group
4. Retry on 429/5xx per Azure throttling guidance

Example fix

// before
network.RouteTable{}
// after
network.RouteTable{
	Location: &location,
	Properties: &network.RouteTablePropertiesFormat{},
}

if _, err := rgClient.Get(ctx, resourceGroupName, nil); err != nil {
	return fmt.Errorf("resource group %q missing: %w", resourceGroupName, err)
}

var respErr *azcore.ResponseError
if errors.As(err, &respErr) {
	switch respErr.StatusCode {
	case http.StatusForbidden: // RBAC issue
	case http.StatusTooManyRequests: // retry with backoff
	}
}

err := doReconcile(ctx)
if err != nil {
	var respErr *azcore.ResponseError
	if errors.As(err, &respErr) && (respErr.StatusCode == 429 || respErr.StatusCode >= 500) {
		return retryWithBackoff(ctx, doReconcile)
	}
	return err
}

When it happens

Trigger: c.c.BeginCreateOrUpdate(ctx, resourceGroupName, routeTableName, parameters, nil) returns an error: invalid resource group, bad RouteTable parameters, auth failures, throttling (429), or missing permissions (Microsoft.Network/routeTables/write).

Common situations: Service principal lacks Network Contributor role on the resource group; route table name conflicts with an existing object of a different type; resource group deleted mid-run; Azure API throttling.

Related errors

• waiting for route table create/update completion: %w
• listing route tables: %w
• deleting route table: %w
• waiting for route table deletion completion: %w
• fetching intermediate certificate from %s: %w

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/00861b8b1aa6c329. Report an issue: GitHub.