cluster-api: Create bootstrap FIP

This is created in the postprovision step, since we'll attach it once
the bootstrap machine has been created.

Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

pkg/infrastructure/openstack/clusterapi/clusterapi.go

@@ -14,6 +14,7 @@ import (
 	"github.com/openshift/installer/pkg/asset/manifests/capiutils"
 	"github.com/openshift/installer/pkg/infrastructure/clusterapi"
 	"github.com/openshift/installer/pkg/infrastructure/openstack/infraready"
+	"github.com/openshift/installer/pkg/infrastructure/openstack/postprovision"
 	"github.com/openshift/installer/pkg/infrastructure/openstack/preprovision"
 	"github.com/openshift/installer/pkg/rhcos"
 	"github.com/openshift/installer/pkg/types/openstack"
@@ -102,3 +103,25 @@ func (p Provider) Ignition(ctx context.Context, in clusterapi.IgnitionInput) ([]
 
 	return preprovision.UploadIgnitionAndBuildShim(ctx, installConfig.Config.Platform.OpenStack.Cloud, infraID, installConfig.Config.Proxy, bootstrapIgnData)
 }
+
+var _ clusterapi.PostProvider = Provider{}
+
+// PostProvision creates and attaches a Floating IP to the Bootstrap Machine.
+func (p Provider) PostProvision(ctx context.Context, in clusterapi.PostProvisionInput) error {
+	var (
+		k8sClient     = in.Client
+		infraID       = in.InfraID
+		installConfig = in.InstallConfig
+	)
+
+	ospCluster := &capo.OpenStackCluster{}
+	key := client.ObjectKey{
+		Name:      infraID,
+		Namespace: capiutils.Namespace,
+	}
+	if err := k8sClient.Get(ctx, key, ospCluster); err != nil {
+		return fmt.Errorf("failed to get OSPCluster: %w", err)
+	}
+
+	return postprovision.FloatingIPs(ctx, k8sClient, ospCluster, installConfig, infraID)
+}

pkg/infrastructure/openstack/infraready/floatingips.go

@@ -45,7 +45,6 @@ func FloatingIPs(cluster *capo.OpenStackCluster, installConfig *installconfig.In
 	return nil
 }
 
-
 func createPort(client *gophercloud.ServiceClient, role, infraID, networkID, subnetID, fixedIP string) (*ports.Port, error) {
 	createOpts := ports.CreateOpts{
 		Name:        fmt.Sprintf("%s-%s-port", infraID, role),

pkg/infrastructure/openstack/postprovision/floatingips.go

@@ -0,0 +1,91 @@
+package postprovision
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/gophercloud/gophercloud"
+	"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/attributestags"
+	"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/floatingips"
+	"github.com/gophercloud/gophercloud/openstack/networking/v2/ports"
+	capo "sigs.k8s.io/cluster-api-provider-openstack/api/v1alpha7"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	"github.com/openshift/installer/pkg/asset/installconfig"
+	"github.com/openshift/installer/pkg/asset/manifests/capiutils"
+	openstackdefaults "github.com/openshift/installer/pkg/types/openstack/defaults"
+)
+
+// FloatingIPs creates and attaches a Floating IP to the Bootstrap Machine.
+func FloatingIPs(ctx context.Context, c client.Client, cluster *capo.OpenStackCluster, installConfig *installconfig.InstallConfig, infraID string) error {
+	bootstrapMachine := &capo.OpenStackMachine{}
+	key := client.ObjectKey{
+		Name:      capiutils.GenerateBoostrapMachineName(infraID),
+		Namespace: capiutils.Namespace,
+	}
+	if err := c.Get(ctx, key, bootstrapMachine); err != nil {
+		return fmt.Errorf("failed to get bootstrap Machine: %w", err)
+	}
+
+	networkClient, err := openstackdefaults.NewServiceClient("network", openstackdefaults.DefaultClientOpts(installConfig.Config.Platform.OpenStack.Cloud))
+	if err != nil {
+		return err
+	}
+
+	bootstrapPort, err := getPortForInstance(networkClient, *bootstrapMachine.Spec.InstanceID)
+	if err != nil {
+		return err
+	}
+
+	_, err = createAndAttachFIP(networkClient, "bootstrap", infraID, cluster.Spec.ExternalNetworkID, bootstrapPort.ID)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Get the first port associated with an instance.
+//
+// This is used to attach a FIP to the instance.
+func getPortForInstance(client *gophercloud.ServiceClient, instanceID string) (*ports.Port, error) {
+	listOpts := ports.ListOpts{
+		DeviceID: instanceID,
+	}
+	allPages, err := ports.List(client, listOpts).AllPages()
+	if err != nil {
+		return nil, fmt.Errorf("failed to list ports: %w", err)
+	}
+	allPorts, err := ports.ExtractPorts(allPages)
+	if err != nil {
+		return nil, fmt.Errorf("failed to extract ports: %w", err)
+	}
+
+	if len(allPorts) < 1 {
+		return nil, fmt.Errorf("bootstrap machine has no associated ports")
+	}
+
+	return &allPorts[0], nil
+}
+
+// Create a floating IP.
+func createAndAttachFIP(client *gophercloud.ServiceClient, role, infraID, networkID, portID string) (*floatingips.FloatingIP, error) {
+	createOpts := floatingips.CreateOpts{
+		Description:       fmt.Sprintf("%s-%s-fip", infraID, role),
+		FloatingNetworkID: networkID,
+		PortID:            portID,
+	}
+
+	floatingIP, err := floatingips.Create(client, createOpts).Extract()
+	if err != nil {
+		return nil, err
+	}
+
+	tag := fmt.Sprintf("openshiftClusterID=%s", infraID)
+	err = attributestags.Add(client, "floatingips", floatingIP.ID, tag).ExtractErr()
+	if err != nil {
+		return nil, err
+	}
+
+	return floatingIP, err
+}