OpenStack: Support enabling cloud drive

Signed-off-by: Waleed Malik <[email protected]>

docs/cloud-provider.md

@@ -135,6 +135,8 @@ network: ""
 computeAPIVersion: ""
 # set trust-device-path flag for kubelet
 trustDevicePath: false
+# set to true to store metadata on a configuration drive instead of the metadata service
+configDrive: false
 # set root disk size
 rootDiskSizeGB: 50
 # set root disk volume type

pkg/cloudprovider/provider/openstack/provider.go

@@ -103,6 +103,7 @@ type Config struct {
 	FloatingIPPool        string
 	AvailabilityZone      string
 	TrustDevicePath       bool
+	ConfigDrive           bool
 	RootDiskSizeGB        *int
 	RootDiskVolumeType    string
 	NodeVolumeAttachLimit *uint
@@ -267,6 +268,11 @@ func (p *provider) getConfig(provSpec clusterv1alpha1.ProviderSpec) (*Config, *p
 		return nil, nil, nil, err
 	}
 
+	cfg.ConfigDrive, _, err = p.configVarResolver.GetConfigVarBoolValue(rawConfig.ConfigDrive)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
 	cfg.ComputeAPIVersion, err = p.configVarResolver.GetConfigVarStringValue(rawConfig.ComputeAPIVersion)
 	if err != nil {
 		return nil, nil, nil, err
@@ -611,6 +617,7 @@ func (p *provider) Create(ctx context.Context, log *zap.SugaredLogger, machine *
 		Name:             machine.Spec.Name,
 		FlavorRef:        flavor.ID,
 		UserData:         []byte(userdata),
+		ConfigDrive:      &cfg.ConfigDrive,
 		SecurityGroups:   securityGroups,
 		AvailabilityZone: cfg.AvailabilityZone,
 		Networks:         []osservers.Network{{UUID: network.ID}},

pkg/cloudprovider/provider/openstack/types/types.go

@@ -52,6 +52,7 @@ type RawConfig struct {
 	RootDiskVolumeType    providerconfigtypes.ConfigVarString   `json:"rootDiskVolumeType,omitempty"`
 	NodeVolumeAttachLimit *uint                                 `json:"nodeVolumeAttachLimit"`
 	ServerGroup           providerconfigtypes.ConfigVarString   `json:"serverGroup"`
+	ConfigDrive           providerconfigtypes.ConfigVarBool     `json:"configDrive,omitempty"`
 	// This tag is related to server metadata, not compute server's tag
 	Tags map[string]string `json:"tags,omitempty"`
 }