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azure_controller_standard.go
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azure_controller_standard.go
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/*
Copyright 2020 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 provider
import (
"context"
"net/http"
"strings"
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2020-12-01/compute"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/Azure/go-autorest/autorest/to"
"k8s.io/apimachinery/pkg/types"
"k8s.io/klog/v2"
azcache "sigs.k8s.io/cloud-provider-azure/pkg/cache"
"sigs.k8s.io/cloud-provider-azure/pkg/consts"
)
// AttachDisk attaches a disk to vm
func (as *availabilitySet) AttachDisk(nodeName types.NodeName, diskMap map[string]*AttachDiskOptions) (*azure.Future, error) {
vm, err := as.getVirtualMachine(nodeName, azcache.CacheReadTypeDefault)
if err != nil {
return nil, err
}
vmName := mapNodeNameToVMName(nodeName)
nodeResourceGroup, err := as.GetNodeResourceGroup(vmName)
if err != nil {
return nil, err
}
disks := make([]compute.DataDisk, len(*vm.StorageProfile.DataDisks))
copy(disks, *vm.StorageProfile.DataDisks)
for k, v := range diskMap {
diskURI := k
opt := v
if opt.isManagedDisk {
attached := false
for _, disk := range *vm.StorageProfile.DataDisks {
if disk.ManagedDisk != nil && strings.EqualFold(*disk.ManagedDisk.ID, diskURI) {
attached = true
break
}
}
if attached {
klog.V(2).Infof("azureDisk - disk(%s) already attached to node(%s)", diskURI, nodeName)
continue
}
managedDisk := &compute.ManagedDiskParameters{ID: &diskURI}
if opt.diskEncryptionSetID == "" {
if vm.StorageProfile.OsDisk != nil &&
vm.StorageProfile.OsDisk.ManagedDisk != nil &&
vm.StorageProfile.OsDisk.ManagedDisk.DiskEncryptionSet != nil &&
vm.StorageProfile.OsDisk.ManagedDisk.DiskEncryptionSet.ID != nil {
// set diskEncryptionSet as value of os disk by default
opt.diskEncryptionSetID = *vm.StorageProfile.OsDisk.ManagedDisk.DiskEncryptionSet.ID
}
}
if opt.diskEncryptionSetID != "" {
managedDisk.DiskEncryptionSet = &compute.DiskEncryptionSetParameters{ID: &opt.diskEncryptionSetID}
}
disks = append(disks,
compute.DataDisk{
Name: &opt.diskName,
Lun: &opt.lun,
Caching: opt.cachingMode,
CreateOption: "attach",
ManagedDisk: managedDisk,
WriteAcceleratorEnabled: to.BoolPtr(opt.writeAcceleratorEnabled),
})
} else {
disks = append(disks,
compute.DataDisk{
Name: &opt.diskName,
Vhd: &compute.VirtualHardDisk{
URI: &diskURI,
},
Lun: &opt.lun,
Caching: opt.cachingMode,
CreateOption: "attach",
})
}
}
newVM := compute.VirtualMachineUpdate{
VirtualMachineProperties: &compute.VirtualMachineProperties{
StorageProfile: &compute.StorageProfile{
DataDisks: &disks,
},
},
}
klog.V(2).Infof("azureDisk - update(%s): vm(%s) - attach disk list(%s)", nodeResourceGroup, vmName, diskMap)
ctx, cancel := getContextWithCancel()
defer cancel()
// Invalidate the cache right after updating
defer func() {
_ = as.cloud.vmCache.Delete(vmName)
}()
future, rerr := as.VirtualMachinesClient.UpdateAsync(ctx, nodeResourceGroup, vmName, newVM, "attach_disk")
if rerr != nil {
klog.Errorf("azureDisk - attach disk list(%s) on rg(%s) vm(%s) failed, err: %v", diskMap, nodeResourceGroup, vmName, rerr)
if rerr.HTTPStatusCode == http.StatusNotFound {
klog.Errorf("azureDisk - begin to filterNonExistingDisks(%v) on rg(%s) vm(%s)", diskMap, nodeResourceGroup, vmName)
disks := as.filterNonExistingDisks(ctx, *newVM.VirtualMachineProperties.StorageProfile.DataDisks)
newVM.VirtualMachineProperties.StorageProfile.DataDisks = &disks
future, rerr = as.VirtualMachinesClient.UpdateAsync(ctx, nodeResourceGroup, vmName, newVM, "attach_disk")
}
}
klog.V(2).Infof("azureDisk - update(%s): vm(%s) - attach disk list(%s) returned with %v", nodeResourceGroup, vmName, diskMap, rerr)
if rerr != nil {
return future, rerr.Error()
}
return future, nil
}
// WaitForUpdateResult waits for the response of the update request
func (as *availabilitySet) WaitForUpdateResult(ctx context.Context, future *azure.Future, resourceGroupName, source string) error {
if rerr := as.VirtualMachinesClient.WaitForUpdateResult(ctx, future, resourceGroupName, source); rerr != nil {
return rerr.Error()
}
return nil
}
// DetachDisk detaches a disk from VM
func (as *availabilitySet) DetachDisk(nodeName types.NodeName, diskMap map[string]string) (*azure.Future, error) {
vm, err := as.getVirtualMachine(nodeName, azcache.CacheReadTypeDefault)
if err != nil {
// if host doesn't exist, no need to detach
klog.Warningf("azureDisk - cannot find node %s, skip detaching disk list(%s)", nodeName, diskMap)
return nil, nil
}
vmName := mapNodeNameToVMName(nodeName)
nodeResourceGroup, err := as.GetNodeResourceGroup(vmName)
if err != nil {
return nil, err
}
disks := make([]compute.DataDisk, len(*vm.StorageProfile.DataDisks))
copy(disks, *vm.StorageProfile.DataDisks)
bFoundDisk := false
for i, disk := range disks {
for diskURI, diskName := range diskMap {
if disk.Lun != nil && (disk.Name != nil && diskName != "" && strings.EqualFold(*disk.Name, diskName)) ||
(disk.Vhd != nil && disk.Vhd.URI != nil && diskURI != "" && strings.EqualFold(*disk.Vhd.URI, diskURI)) ||
(disk.ManagedDisk != nil && diskURI != "" && strings.EqualFold(*disk.ManagedDisk.ID, diskURI)) {
// found the disk
klog.V(2).Infof("azureDisk - detach disk: name %q uri %q", diskName, diskURI)
disks[i].ToBeDetached = to.BoolPtr(true)
bFoundDisk = true
}
}
}
if !bFoundDisk {
// only log here, next action is to update VM status with original meta data
klog.Errorf("detach azure disk on node(%s): disk list(%s) not found", nodeName, diskMap)
} else {
if strings.EqualFold(as.cloud.Environment.Name, consts.AzureStackCloudName) && !as.Config.DisableAzureStackCloud {
// Azure stack does not support ToBeDetached flag, use original way to detach disk
newDisks := []compute.DataDisk{}
for _, disk := range disks {
if !to.Bool(disk.ToBeDetached) {
newDisks = append(newDisks, disk)
}
}
disks = newDisks
}
}
newVM := compute.VirtualMachineUpdate{
VirtualMachineProperties: &compute.VirtualMachineProperties{
StorageProfile: &compute.StorageProfile{
DataDisks: &disks,
},
},
}
klog.V(2).Infof("azureDisk - update(%s): vm(%s) - detach disk list(%s)", nodeResourceGroup, vmName, nodeName, diskMap)
ctx, cancel := getContextWithCancel()
defer cancel()
// Invalidate the cache right after updating
defer func() {
_ = as.cloud.vmCache.Delete(vmName)
}()
future, rerr := as.VirtualMachinesClient.UpdateAsync(ctx, nodeResourceGroup, vmName, newVM, "detach_disk")
if rerr != nil {
klog.Errorf("azureDisk - detach disk list(%s) on rg(%s) vm(%s) failed, err: %v", diskMap, nodeResourceGroup, vmName, rerr)
if rerr.HTTPStatusCode == http.StatusNotFound {
klog.Errorf("azureDisk - begin to filterNonExistingDisks(%v) on rg(%s) vm(%s)", diskMap, nodeResourceGroup, vmName)
disks := as.filterNonExistingDisks(ctx, *vm.StorageProfile.DataDisks)
newVM.VirtualMachineProperties.StorageProfile.DataDisks = &disks
future, rerr = as.VirtualMachinesClient.UpdateAsync(ctx, nodeResourceGroup, vmName, newVM, "detach_disk")
}
}
klog.V(2).Infof("azureDisk - update(%s): vm(%s) - detach disk list(%s) returned with %v", nodeResourceGroup, vmName, diskMap, rerr)
if rerr != nil {
return future, rerr.Error()
}
return future, nil
}
// UpdateVM updates a vm
func (as *availabilitySet) UpdateVM(nodeName types.NodeName) error {
vmName := mapNodeNameToVMName(nodeName)
nodeResourceGroup, err := as.GetNodeResourceGroup(vmName)
if err != nil {
return err
}
klog.V(2).Infof("azureDisk - update(%s): vm(%s)", nodeResourceGroup, vmName)
ctx, cancel := getContextWithCancel()
defer cancel()
// Invalidate the cache right after updating
defer func() {
_ = as.cloud.vmCache.Delete(vmName)
}()
rerr := as.VirtualMachinesClient.Update(ctx, nodeResourceGroup, vmName, compute.VirtualMachineUpdate{}, "update_vm")
klog.V(2).Infof("azureDisk - update(%s): vm(%s) - returned with %v", nodeResourceGroup, vmName, rerr)
if rerr != nil {
return rerr.Error()
}
return nil
}
// GetDataDisks gets a list of data disks attached to the node.
func (as *availabilitySet) GetDataDisks(nodeName types.NodeName, crt azcache.AzureCacheReadType) ([]compute.DataDisk, *string, error) {
vm, err := as.getVirtualMachine(nodeName, crt)
if err != nil {
return nil, nil, err
}
if vm.StorageProfile.DataDisks == nil {
return nil, nil, nil
}
return *vm.StorageProfile.DataDisks, vm.ProvisioningState, nil
}