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vsphere.go
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vsphere.go
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/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package vsphere
import (
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"net/url"
"path"
"path/filepath"
"runtime"
"strings"
"sync"
"gopkg.in/gcfg.v1"
"github.com/golang/glog"
"github.com/vmware/govmomi"
"github.com/vmware/govmomi/find"
"github.com/vmware/govmomi/object"
"github.com/vmware/govmomi/property"
"github.com/vmware/govmomi/session"
"github.com/vmware/govmomi/vim25"
"github.com/vmware/govmomi/vim25/mo"
"github.com/vmware/govmomi/vim25/soap"
"github.com/vmware/govmomi/vim25/types"
"golang.org/x/net/context"
k8stypes "k8s.io/apimachinery/pkg/types"
k8runtime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/kubernetes/pkg/api/v1"
v1helper "k8s.io/kubernetes/pkg/api/v1/helper"
"k8s.io/kubernetes/pkg/cloudprovider"
)
const (
ProviderName = "vsphere"
ActivePowerState = "poweredOn"
SCSIControllerType = "scsi"
LSILogicControllerType = "lsiLogic"
BusLogicControllerType = "busLogic"
PVSCSIControllerType = "pvscsi"
LSILogicSASControllerType = "lsiLogic-sas"
SCSIControllerLimit = 4
SCSIControllerDeviceLimit = 15
SCSIDeviceSlots = 16
SCSIReservedSlot = 7
ThinDiskType = "thin"
PreallocatedDiskType = "preallocated"
EagerZeroedThickDiskType = "eagerZeroedThick"
ZeroedThickDiskType = "zeroedThick"
VolDir = "kubevols"
RoundTripperDefaultCount = 3
DummyVMName = "kubernetes-helper-vm"
VSANDatastoreType = "vsan"
MAC_OUI_VC = "00:50:56"
MAC_OUI_ESX = "00:0c:29"
)
// Controller types that are currently supported for hot attach of disks
// lsilogic driver type is currently not supported because,when a device gets detached
// it fails to remove the device from the /dev path (which should be manually done)
// making the subsequent attaches to the node to fail.
// TODO: Add support for lsilogic driver type
var supportedSCSIControllerType = []string{strings.ToLower(LSILogicSASControllerType), PVSCSIControllerType}
// Maps user options to API parameters.
// Keeping user options consistent with docker volume plugin for vSphere.
// API: http://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.wssdk.apiref.doc/vim.VirtualDiskManager.VirtualDiskType.html
var diskFormatValidType = map[string]string{
ThinDiskType: ThinDiskType,
strings.ToLower(EagerZeroedThickDiskType): EagerZeroedThickDiskType,
strings.ToLower(ZeroedThickDiskType): PreallocatedDiskType,
}
var DiskformatValidOptions = generateDiskFormatValidOptions()
var ErrNoDiskUUIDFound = errors.New("No disk UUID found")
var ErrNoDiskIDFound = errors.New("No vSphere disk ID found")
var ErrNoDevicesFound = errors.New("No devices found")
var ErrNonSupportedControllerType = errors.New("Disk is attached to non-supported controller type")
var ErrFileAlreadyExist = errors.New("File requested already exist")
var clientLock sync.Mutex
// VSphere is an implementation of cloud provider Interface for VSphere.
type VSphere struct {
client *govmomi.Client
cfg *VSphereConfig
// InstanceID of the server where this VSphere object is instantiated.
localInstanceID string
}
type VSphereConfig struct {
Global struct {
// vCenter username.
User string `gcfg:"user"`
// vCenter password in clear text.
Password string `gcfg:"password"`
// vCenter IP.
VCenterIP string `gcfg:"server"`
// vCenter port.
VCenterPort string `gcfg:"port"`
// True if vCenter uses self-signed cert.
InsecureFlag bool `gcfg:"insecure-flag"`
// Datacenter in which VMs are located.
Datacenter string `gcfg:"datacenter"`
// Datastore in which vmdks are stored.
Datastore string `gcfg:"datastore"`
// WorkingDir is path where VMs can be found.
WorkingDir string `gcfg:"working-dir"`
// Soap round tripper count (retries = RoundTripper - 1)
RoundTripperCount uint `gcfg:"soap-roundtrip-count"`
// VMUUID is the VM Instance UUID of virtual machine which can be retrieved from instanceUuid
// property in VmConfigInfo, or also set as vc.uuid in VMX file.
// If not set, will be fetched from the machine via sysfs (requires root)
VMUUID string `gcfg:"vm-uuid"`
// VMName is the VM name of virtual machine
// Combining the WorkingDir and VMName can form a unique InstanceID.
// When vm-name is set, no username/password is required on worker nodes.
VMName string `gcfg:"vm-name"`
}
Network struct {
// PublicNetwork is name of the network the VMs are joined to.
PublicNetwork string `gcfg:"public-network"`
}
Disk struct {
// SCSIControllerType defines SCSI controller to be used.
SCSIControllerType string `dcfg:"scsicontrollertype"`
}
}
type Volumes interface {
// AttachDisk attaches given disk to given node. Current node
// is used when nodeName is empty string.
AttachDisk(vmDiskPath string, nodeName k8stypes.NodeName) (diskID string, diskUUID string, err error)
// DetachDisk detaches given disk to given node. Current node
// is used when nodeName is empty string.
// Assumption: If node doesn't exist, disk is already detached from node.
DetachDisk(volPath string, nodeName k8stypes.NodeName) error
// DiskIsAttached checks if a disk is attached to the given node.
// Assumption: If node doesn't exist, disk is not attached to the node.
DiskIsAttached(volPath string, nodeName k8stypes.NodeName) (bool, error)
// DisksAreAttached checks if a list disks are attached to the given node.
// Assumption: If node doesn't exist, disks are not attached to the node.
DisksAreAttached(volPath []string, nodeName k8stypes.NodeName) (map[string]bool, error)
// CreateVolume creates a new vmdk with specified parameters.
CreateVolume(volumeOptions *VolumeOptions) (volumePath string, err error)
// DeleteVolume deletes vmdk.
DeleteVolume(vmDiskPath string) error
}
// VolumeOptions specifies capacity, tags, name and diskFormat for a volume.
type VolumeOptions struct {
CapacityKB int
Tags map[string]string
Name string
DiskFormat string
Datastore string
StorageProfileData string
}
// Generates Valid Options for Diskformat
func generateDiskFormatValidOptions() string {
validopts := ""
for diskformat := range diskFormatValidType {
validopts += (diskformat + ", ")
}
validopts = strings.TrimSuffix(validopts, ", ")
return validopts
}
// Parses vSphere cloud config file and stores it into VSphereConfig.
func readConfig(config io.Reader) (VSphereConfig, error) {
if config == nil {
err := fmt.Errorf("no vSphere cloud provider config file given")
return VSphereConfig{}, err
}
var cfg VSphereConfig
err := gcfg.ReadInto(&cfg, config)
return cfg, err
}
func init() {
cloudprovider.RegisterCloudProvider(ProviderName, func(config io.Reader) (cloudprovider.Interface, error) {
cfg, err := readConfig(config)
if err != nil {
return nil, err
}
return newVSphere(cfg)
})
}
// Returns the name of the VM on which this code is running.
// Prerequisite: this code assumes VMWare vmtools or open-vm-tools to be installed in the VM.
// Will attempt to determine the machine's name via it's UUID in this precedence order, failing if neither have a UUID:
// * cloud config value VMUUID
// * sysfs entry
func getVMName(client *govmomi.Client, cfg *VSphereConfig) (string, error) {
var vmUUID string
if cfg.Global.VMUUID != "" {
vmUUID = cfg.Global.VMUUID
} else {
// This needs root privileges on the host, and will fail otherwise.
vmUUIDbytes, err := ioutil.ReadFile("/sys/devices/virtual/dmi/id/product_uuid")
if err != nil {
return "", err
}
vmUUID = string(vmUUIDbytes)
cfg.Global.VMUUID = vmUUID
}
if vmUUID == "" {
return "", fmt.Errorf("unable to determine machine ID from cloud configuration or sysfs")
}
// Create context
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Create a new finder
f := find.NewFinder(client.Client, true)
// Fetch and set data center
dc, err := f.Datacenter(ctx, cfg.Global.Datacenter)
if err != nil {
return "", err
}
f.SetDatacenter(dc)
s := object.NewSearchIndex(client.Client)
svm, err := s.FindByUuid(ctx, dc, strings.ToLower(strings.TrimSpace(vmUUID)), true, nil)
if err != nil {
return "", err
}
var vm mo.VirtualMachine
err = s.Properties(ctx, svm.Reference(), []string{"name"}, &vm)
if err != nil {
return "", err
}
return vm.Name, nil
}
func newVSphere(cfg VSphereConfig) (*VSphere, error) {
if cfg.Disk.SCSIControllerType == "" {
cfg.Disk.SCSIControllerType = PVSCSIControllerType
} else if !checkControllerSupported(cfg.Disk.SCSIControllerType) {
glog.Errorf("%v is not a supported SCSI Controller type. Please configure 'lsilogic-sas' OR 'pvscsi'", cfg.Disk.SCSIControllerType)
return nil, errors.New("Controller type not supported. Please configure 'lsilogic-sas' OR 'pvscsi'")
}
if cfg.Global.WorkingDir != "" {
cfg.Global.WorkingDir = path.Clean(cfg.Global.WorkingDir) + "/"
}
if cfg.Global.RoundTripperCount == 0 {
cfg.Global.RoundTripperCount = RoundTripperDefaultCount
}
if cfg.Global.VCenterPort != "" {
glog.Warningf("port is a deprecated field in vsphere.conf and will be removed in future release.")
}
var c *govmomi.Client
var id string
if cfg.Global.VMName == "" {
// if VMName is not set in the cloud config file, each nodes (including worker nodes) need credentials to obtain VMName from vCenter
glog.V(4).Infof("Cannot find VMName from cloud config file, start obtaining it from vCenter")
c, err := newClient(context.TODO(), &cfg)
if err != nil {
return nil, err
}
id, err = getVMName(c, &cfg)
if err != nil {
return nil, err
}
} else {
id = cfg.Global.VMName
}
vs := VSphere{
client: c,
cfg: &cfg,
localInstanceID: id,
}
runtime.SetFinalizer(&vs, logout)
return &vs, nil
}
// Returns if the given controller type is supported by the plugin
func checkControllerSupported(ctrlType string) bool {
for _, c := range supportedSCSIControllerType {
if ctrlType == c {
return true
}
}
return false
}
func logout(vs *VSphere) {
if vs.client != nil {
vs.client.Logout(context.TODO())
}
}
func newClient(ctx context.Context, cfg *VSphereConfig) (*govmomi.Client, error) {
// Parse URL from string
u, err := url.Parse(fmt.Sprintf("https://%s/sdk", cfg.Global.VCenterIP))
if err != nil {
return nil, err
}
// set username and password for the URL
u.User = url.UserPassword(cfg.Global.User, cfg.Global.Password)
// Connect and log in to ESX or vCenter
c, err := govmomi.NewClient(ctx, u, cfg.Global.InsecureFlag)
if err != nil {
return nil, err
}
// Add retry functionality
c.RoundTripper = vim25.Retry(c.RoundTripper, vim25.TemporaryNetworkError(int(cfg.Global.RoundTripperCount)))
return c, nil
}
// Returns a client which communicates with vCenter.
// This client can used to perform further vCenter operations.
func vSphereLogin(ctx context.Context, vs *VSphere) error {
var err error
clientLock.Lock()
defer clientLock.Unlock()
if vs.client == nil {
vs.client, err = newClient(ctx, vs.cfg)
if err != nil {
return err
}
return nil
}
m := session.NewManager(vs.client.Client)
// retrieve client's current session
u, err := m.UserSession(ctx)
if err != nil {
glog.Errorf("Error while obtaining user session. err: %q", err)
return err
}
if u != nil {
return nil
}
glog.Warningf("Creating new client session since the existing session is not valid or not authenticated")
vs.client.Logout(ctx)
vs.client, err = newClient(ctx, vs.cfg)
if err != nil {
return err
}
return nil
}
// Returns vSphere object `virtual machine` by its name.
func getVirtualMachineByName(ctx context.Context, cfg *VSphereConfig, c *govmomi.Client, nodeName k8stypes.NodeName) (*object.VirtualMachine, error) {
name := nodeNameToVMName(nodeName)
// Create a new finder
f := find.NewFinder(c.Client, true)
// Fetch and set data center
dc, err := f.Datacenter(ctx, cfg.Global.Datacenter)
if err != nil {
return nil, err
}
f.SetDatacenter(dc)
vmRegex := cfg.Global.WorkingDir + name
// Retrieve vm by name
//TODO: also look for vm inside subfolders
vm, err := f.VirtualMachine(ctx, vmRegex)
if err != nil {
return nil, err
}
return vm, nil
}
// Instances returns an implementation of Instances for vSphere.
func (vs *VSphere) Instances() (cloudprovider.Instances, bool) {
return vs, true
}
func getLocalIP() ([]v1.NodeAddress, error) {
addrs := []v1.NodeAddress{}
ifaces, err := net.Interfaces()
if err != nil {
glog.Errorf("net.Interfaces() failed for NodeAddresses - %v", err)
return nil, err
}
for _, i := range ifaces {
localAddrs, err := i.Addrs()
if err != nil {
glog.Warningf("Failed to extract addresses for NodeAddresses - %v", err)
} else {
for _, addr := range localAddrs {
if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
// Filter external IP by MAC address OUIs from vCenter and from ESX
var addressType v1.NodeAddressType
if strings.HasPrefix(i.HardwareAddr.String(), MAC_OUI_VC) ||
strings.HasPrefix(i.HardwareAddr.String(), MAC_OUI_ESX) {
addressType = v1.NodeExternalIP
} else {
addressType = v1.NodeInternalIP
}
v1helper.AddToNodeAddresses(&addrs,
v1.NodeAddress{
Type: addressType,
Address: ipnet.IP.String(),
},
)
glog.V(4).Infof("Find local IP address %v and set type to %v", ipnet.IP.String(), addressType)
}
}
}
}
}
return addrs, nil
}
// getVMandMO returns the VM object and required field from the VM object
func (vs *VSphere) getVMandMO(ctx context.Context, nodeName k8stypes.NodeName, field string) (vm *object.VirtualMachine, mvm *mo.VirtualMachine, err error) {
// Ensure client is logged in and session is valid
err = vSphereLogin(ctx, vs)
if err != nil {
glog.Errorf("Failed to login into vCenter - %v", err)
return nil, nil, err
}
vm, err = getVirtualMachineByName(ctx, vs.cfg, vs.client, nodeName)
if err != nil {
if _, ok := err.(*find.NotFoundError); ok {
return nil, nil, cloudprovider.InstanceNotFound
}
return nil, nil, err
}
// Retrieve required field from VM object
var movm mo.VirtualMachine
collector := property.DefaultCollector(vs.client.Client)
err = collector.RetrieveOne(ctx, vm.Reference(), []string{field}, &movm)
if err != nil {
return nil, nil, err
}
return vm, &movm, nil
}
// NodeAddresses is an implementation of Instances.NodeAddresses.
func (vs *VSphere) NodeAddresses(nodeName k8stypes.NodeName) ([]v1.NodeAddress, error) {
if vs.localInstanceID == nodeNameToVMName(nodeName) {
/* Get local IP addresses if node is local node */
return getLocalIP()
}
addrs := []v1.NodeAddress{}
// Create context
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
_, mvm, err := vs.getVMandMO(ctx, nodeName, "guest.net")
if err != nil {
glog.Errorf("Failed to getVMandMO for NodeAddresses: err %v", err)
return addrs, err
}
// retrieve VM's ip(s)
for _, v := range mvm.Guest.Net {
var addressType v1.NodeAddressType
if vs.cfg.Network.PublicNetwork == v.Network {
addressType = v1.NodeExternalIP
} else {
addressType = v1.NodeInternalIP
}
for _, ip := range v.IpAddress {
v1helper.AddToNodeAddresses(&addrs,
v1.NodeAddress{
Type: addressType,
Address: ip,
},
)
}
}
return addrs, nil
}
// NodeAddressesByProviderID returns the node addresses of an instances with the specified unique providerID
// This method will not be called from the node that is requesting this ID. i.e. metadata service
// and other local methods cannot be used here
func (vs *VSphere) NodeAddressesByProviderID(providerID string) ([]v1.NodeAddress, error) {
return []v1.NodeAddress{}, errors.New("unimplemented")
}
func (vs *VSphere) AddSSHKeyToAllInstances(user string, keyData []byte) error {
return errors.New("unimplemented")
}
func (vs *VSphere) CurrentNodeName(hostname string) (k8stypes.NodeName, error) {
return vmNameToNodeName(vs.localInstanceID), nil
}
// nodeNameToVMName maps a NodeName to the vmware infrastructure name
func nodeNameToVMName(nodeName k8stypes.NodeName) string {
return string(nodeName)
}
// nodeNameToVMName maps a vmware infrastructure name to a NodeName
func vmNameToNodeName(vmName string) k8stypes.NodeName {
return k8stypes.NodeName(vmName)
}
// ExternalID returns the cloud provider ID of the node with the specified Name (deprecated).
func (vs *VSphere) ExternalID(nodeName k8stypes.NodeName) (string, error) {
if vs.localInstanceID == nodeNameToVMName(nodeName) {
return vs.cfg.Global.WorkingDir + vs.localInstanceID, nil
}
// Create context
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
vm, mvm, err := vs.getVMandMO(ctx, nodeName, "summary")
if err != nil {
glog.Errorf("Failed to getVMandMO for ExternalID: err %v", err)
return "", err
}
if mvm.Summary.Runtime.PowerState == ActivePowerState {
return vm.InventoryPath, nil
}
if mvm.Summary.Config.Template == false {
glog.Warningf("VM %s, is not in %s state", nodeName, ActivePowerState)
} else {
glog.Warningf("VM %s, is a template", nodeName)
}
return "", cloudprovider.InstanceNotFound
}
// InstanceID returns the cloud provider ID of the node with the specified Name.
func (vs *VSphere) InstanceID(nodeName k8stypes.NodeName) (string, error) {
if vs.localInstanceID == nodeNameToVMName(nodeName) {
return vs.cfg.Global.WorkingDir + vs.localInstanceID, nil
}
// Create context
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
vm, mvm, err := vs.getVMandMO(ctx, nodeName, "summary")
if err != nil {
glog.Errorf("Failed to getVMandMO for InstanceID: err %v", err)
return "", err
}
if mvm.Summary.Runtime.PowerState == ActivePowerState {
return "/" + vm.InventoryPath, nil
}
if mvm.Summary.Config.Template == false {
glog.Warningf("VM %s, is not in %s state", nodeName, ActivePowerState)
} else {
glog.Warningf("VM %s, is a template", nodeName)
}
return "", cloudprovider.InstanceNotFound
}
// InstanceTypeByProviderID returns the cloudprovider instance type of the node with the specified unique providerID
// This method will not be called from the node that is requesting this ID. i.e. metadata service
// and other local methods cannot be used here
func (vs *VSphere) InstanceTypeByProviderID(providerID string) (string, error) {
return "", errors.New("unimplemented")
}
func (vs *VSphere) InstanceType(name k8stypes.NodeName) (string, error) {
return "", nil
}
func (vs *VSphere) Clusters() (cloudprovider.Clusters, bool) {
return nil, true
}
// ProviderName returns the cloud provider ID.
func (vs *VSphere) ProviderName() string {
return ProviderName
}
// LoadBalancer returns an implementation of LoadBalancer for vSphere.
func (vs *VSphere) LoadBalancer() (cloudprovider.LoadBalancer, bool) {
return nil, false
}
// Zones returns an implementation of Zones for Google vSphere.
func (vs *VSphere) Zones() (cloudprovider.Zones, bool) {
glog.V(1).Info("The vSphere cloud provider does not support zones")
return nil, false
}
// Routes returns a false since the interface is not supported for vSphere.
func (vs *VSphere) Routes() (cloudprovider.Routes, bool) {
return nil, false
}
// ScrubDNS filters DNS settings for pods.
func (vs *VSphere) ScrubDNS(nameservers, searches []string) (nsOut, srchOut []string) {
return nameservers, searches
}
// Returns vSphere objects virtual machine, virtual device list, datastore and datacenter.
func getVirtualMachineDevices(ctx context.Context, cfg *VSphereConfig, c *govmomi.Client, name string) (*object.VirtualMachine, object.VirtualDeviceList, *object.Datacenter, error) {
// Create a new finder
f := find.NewFinder(c.Client, true)
// Fetch and set data center
dc, err := f.Datacenter(ctx, cfg.Global.Datacenter)
if err != nil {
return nil, nil, nil, err
}
f.SetDatacenter(dc)
vmRegex := cfg.Global.WorkingDir + name
vm, err := f.VirtualMachine(ctx, vmRegex)
if err != nil {
return nil, nil, nil, err
}
// Get devices from VM
vmDevices, err := vm.Device(ctx)
if err != nil {
return nil, nil, nil, err
}
return vm, vmDevices, dc, nil
}
// Removes SCSI controller which is latest attached to VM.
func cleanUpController(ctx context.Context, newSCSIController types.BaseVirtualDevice, vmDevices object.VirtualDeviceList, vm *object.VirtualMachine) error {
if newSCSIController == nil || vmDevices == nil || vm == nil {
return nil
}
ctls := vmDevices.SelectByType(newSCSIController)
if len(ctls) < 1 {
return ErrNoDevicesFound
}
newScsi := ctls[len(ctls)-1]
err := vm.RemoveDevice(ctx, true, newScsi)
if err != nil {
return err
}
return nil
}
// Attaches given virtual disk volume to the compute running kubelet.
func (vs *VSphere) AttachDisk(vmDiskPath string, nodeName k8stypes.NodeName) (diskID string, diskUUID string, err error) {
var newSCSIController types.BaseVirtualDevice
// Create context
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Ensure client is logged in and session is valid
err = vSphereLogin(ctx, vs)
if err != nil {
glog.Errorf("Failed to login into vCenter - %v", err)
return "", "", err
}
// Find virtual machine to attach disk to
var vSphereInstance string
if nodeName == "" {
vSphereInstance = vs.localInstanceID
nodeName = vmNameToNodeName(vSphereInstance)
} else {
vSphereInstance = nodeNameToVMName(nodeName)
}
// Get VM device list
vm, vmDevices, dc, err := getVirtualMachineDevices(ctx, vs.cfg, vs.client, vSphereInstance)
if err != nil {
return "", "", err
}
attached, _ := checkDiskAttached(vmDiskPath, vmDevices, dc, vs.client)
if attached {
diskID, _ = getVirtualDiskID(vmDiskPath, vmDevices, dc, vs.client)
diskUUID, _ = getVirtualDiskUUIDByPath(vmDiskPath, dc, vs.client)
return diskID, diskUUID, nil
}
var diskControllerType = vs.cfg.Disk.SCSIControllerType
// find SCSI controller of particular type from VM devices
scsiControllersOfRequiredType := getSCSIControllersOfType(vmDevices, diskControllerType)
scsiController := getAvailableSCSIController(scsiControllersOfRequiredType)
newSCSICreated := false
if scsiController == nil {
newSCSIController, err = createAndAttachSCSIControllerToVM(ctx, vm, diskControllerType)
if err != nil {
glog.Errorf("Failed to create SCSI controller for VM :%q with err: %+v", vm.Name(), err)
return "", "", err
}
// verify scsi controller in virtual machine
vmDevices, err := vm.Device(ctx)
if err != nil {
return "", "", err
}
// Get VM device list
_, vmDevices, _, err = getVirtualMachineDevices(ctx, vs.cfg, vs.client, vSphereInstance)
if err != nil {
glog.Errorf("cannot get vmDevices for VM err=%s", err)
return "", "", fmt.Errorf("cannot get vmDevices for VM err=%s", err)
}
scsiControllersOfRequiredType := getSCSIControllersOfType(vmDevices, diskControllerType)
scsiController := getAvailableSCSIController(scsiControllersOfRequiredType)
if scsiController == nil {
glog.Errorf("cannot find SCSI controller in VM")
// attempt clean up of scsi controller
cleanUpController(ctx, newSCSIController, vmDevices, vm)
return "", "", fmt.Errorf("cannot find SCSI controller in VM")
}
newSCSICreated = true
}
// Create a new finder
f := find.NewFinder(vs.client.Client, true)
// Set data center
f.SetDatacenter(dc)
datastorePathObj := new(object.DatastorePath)
isSuccess := datastorePathObj.FromString(vmDiskPath)
if !isSuccess {
glog.Errorf("Failed to parse vmDiskPath: %+q", vmDiskPath)
return "", "", errors.New("Failed to parse vmDiskPath")
}
ds, err := f.Datastore(ctx, datastorePathObj.Datastore)
if err != nil {
glog.Errorf("Failed while searching for datastore %+q. err %s", datastorePathObj.Datastore, err)
return "", "", err
}
disk := vmDevices.CreateDisk(scsiController, ds.Reference(), vmDiskPath)
unitNumber, err := getNextUnitNumber(vmDevices, scsiController)
if err != nil {
glog.Errorf("cannot attach disk to VM, limit reached - %v.", err)
return "", "", err
}
*disk.UnitNumber = unitNumber
backing := disk.Backing.(*types.VirtualDiskFlatVer2BackingInfo)
backing.DiskMode = string(types.VirtualDiskModeIndependent_persistent)
// Attach disk to the VM
err = vm.AddDevice(ctx, disk)
if err != nil {
glog.Errorf("cannot attach disk to the vm - %v", err)
if newSCSICreated {
cleanUpController(ctx, newSCSIController, vmDevices, vm)
}
return "", "", err
}
vmDevices, err = vm.Device(ctx)
if err != nil {
if newSCSICreated {
cleanUpController(ctx, newSCSIController, vmDevices, vm)
}
return "", "", err
}
devices := vmDevices.SelectByType(disk)
if len(devices) < 1 {
if newSCSICreated {
cleanUpController(ctx, newSCSIController, vmDevices, vm)
}
return "", "", ErrNoDevicesFound
}
// get new disk id
newDevice := devices[len(devices)-1]
deviceName := devices.Name(newDevice)
// get device uuid
diskUUID, err = getVirtualDiskUUID(newDevice)
if err != nil {
if newSCSICreated {
cleanUpController(ctx, newSCSIController, vmDevices, vm)
}
vs.DetachDisk(deviceName, nodeName)
return "", "", err
}
return deviceName, diskUUID, nil
}
func getNextUnitNumber(devices object.VirtualDeviceList, c types.BaseVirtualController) (int32, error) {
// get next available SCSI controller unit number
var takenUnitNumbers [SCSIDeviceSlots]bool
takenUnitNumbers[SCSIReservedSlot] = true
key := c.GetVirtualController().Key
for _, device := range devices {
d := device.GetVirtualDevice()
if d.ControllerKey == key {
if d.UnitNumber != nil {
takenUnitNumbers[*d.UnitNumber] = true
}
}
}
for unitNumber, takenUnitNumber := range takenUnitNumbers {
if !takenUnitNumber {
return int32(unitNumber), nil
}
}
return -1, fmt.Errorf("SCSI Controller with key=%d does not have any available slots (LUN).", key)
}
func getSCSIController(vmDevices object.VirtualDeviceList, scsiType string) *types.VirtualController {
// get virtual scsi controller of passed argument type
for _, device := range vmDevices {
devType := vmDevices.Type(device)
if devType == scsiType {
if c, ok := device.(types.BaseVirtualController); ok {
return c.GetVirtualController()
}
}
}
return nil
}
func getSCSIControllersOfType(vmDevices object.VirtualDeviceList, scsiType string) []*types.VirtualController {
// get virtual scsi controllers of passed argument type
var scsiControllers []*types.VirtualController
for _, device := range vmDevices {
devType := vmDevices.Type(device)
if devType == scsiType {
if c, ok := device.(types.BaseVirtualController); ok {
scsiControllers = append(scsiControllers, c.GetVirtualController())
}
}
}
return scsiControllers
}
func getSCSIControllers(vmDevices object.VirtualDeviceList) []*types.VirtualController {
// get all virtual scsi controllers
var scsiControllers []*types.VirtualController
for _, device := range vmDevices {
devType := vmDevices.Type(device)
switch devType {
case SCSIControllerType, strings.ToLower(LSILogicControllerType), strings.ToLower(BusLogicControllerType), PVSCSIControllerType, strings.ToLower(LSILogicSASControllerType):
if c, ok := device.(types.BaseVirtualController); ok {
scsiControllers = append(scsiControllers, c.GetVirtualController())
}
}
}
return scsiControllers
}
func getAvailableSCSIController(scsiControllers []*types.VirtualController) *types.VirtualController {
// get SCSI controller which has space for adding more devices
for _, controller := range scsiControllers {
if len(controller.Device) < SCSIControllerDeviceLimit {
return controller
}
}
return nil
}
// DiskIsAttached returns if disk is attached to the VM using controllers supported by the plugin.
func (vs *VSphere) DiskIsAttached(volPath string, nodeName k8stypes.NodeName) (bool, error) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Ensure client is logged in and session is valid
err := vSphereLogin(ctx, vs)
if err != nil {
glog.Errorf("Failed to login into vCenter - %v", err)
return false, err
}
// Find VM to detach disk from
var vSphereInstance string
if nodeName == "" {
vSphereInstance = vs.localInstanceID
nodeName = vmNameToNodeName(vSphereInstance)
} else {
vSphereInstance = nodeNameToVMName(nodeName)
}
nodeExist, err := vs.NodeExists(nodeName)
if err != nil {
glog.Errorf("Failed to check whether node exist. err: %s.", err)
return false, err
}
if !nodeExist {
glog.Errorf("DiskIsAttached failed to determine whether disk %q is still attached: node %q does not exist",
volPath,
vSphereInstance)
return false, fmt.Errorf("DiskIsAttached failed to determine whether disk %q is still attached: node %q does not exist",
volPath,
vSphereInstance)
}
// Get VM device list
_, vmDevices, dc, err := getVirtualMachineDevices(ctx, vs.cfg, vs.client, vSphereInstance)
if err != nil {
glog.Errorf("Failed to get VM devices for VM %#q. err: %s", vSphereInstance, err)
return false, err
}
attached, err := checkDiskAttached(volPath, vmDevices, dc, vs.client)
return attached, err
}
// DisksAreAttached returns if disks are attached to the VM using controllers supported by the plugin.
func (vs *VSphere) DisksAreAttached(volPaths []string, nodeName k8stypes.NodeName) (map[string]bool, error) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Create vSphere client
attached := make(map[string]bool)
for _, volPath := range volPaths {
attached[volPath] = false
}
err := vSphereLogin(ctx, vs)
if err != nil {
glog.Errorf("Failed to login into vCenter, err: %v", err)
return attached, err
}
// Find VM to detach disk from
var vSphereInstance string
if nodeName == "" {
vSphereInstance = vs.localInstanceID
nodeName = vmNameToNodeName(vSphereInstance)
} else {
vSphereInstance = nodeNameToVMName(nodeName)
}
nodeExist, err := vs.NodeExists(nodeName)
if err != nil {
glog.Errorf("Failed to check whether node exist. err: %s.", err)
return attached, err
}
if !nodeExist {
glog.Errorf("DisksAreAttached failed to determine whether disks %v are still attached: node %q does not exist",
volPaths,
vSphereInstance)
return attached, fmt.Errorf("DisksAreAttached failed to determine whether disks %v are still attached: node %q does not exist",
volPaths,
vSphereInstance)