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driver_azure.go
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driver_azure.go
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/*
Copyright (c) 2017 SAP SE or an SAP affiliate company. All rights reserved.
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 driver contains the cloud provider specific implementations to manage machines
package driver
import (
"context"
"encoding/base64"
"fmt"
"strconv"
"strings"
"sync"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/xuanson2406/machine-controller-manager/pkg/apis/machine"
v1alpha1 "github.com/xuanson2406/machine-controller-manager/pkg/apis/machine/v1alpha1"
"github.com/xuanson2406/machine-controller-manager/pkg/metrics"
backoff "github.com/xuanson2406/machine-controller-manager/pkg/util/backoff"
corev1 "k8s.io/api/core/v1"
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-12-01/compute"
"github.com/Azure/azure-sdk-for-go/services/marketplaceordering/mgmt/2015-06-01/marketplaceordering"
"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2019-11-01/network"
"github.com/Azure/azure-sdk-for-go/services/resources/mgmt/2019-05-01/resources"
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/adal"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/Azure/go-autorest/autorest/to"
"k8s.io/klog/v2"
)
const (
// azureDiskDriverName is the name of the CSI driver for Azure Disk
azureDiskDriverName = "disk.csi.azure.com"
)
// AzureDriver is the driver struct for holding azure machine information
type AzureDriver struct {
AzureMachineClass *v1alpha1.AzureMachineClass
CredentialsData map[string][]byte
UserData string
MachineID string
MachineName string
}
func (d *AzureDriver) getNICParameters(vmName string, subnet *network.Subnet) network.Interface {
var (
nicName = dependencyNameFromVMName(vmName, nicSuffix)
location = d.AzureMachineClass.Spec.Location
enableIPForwarding = true
)
// Add tags to the machine resources
tagList := map[string]*string{}
for idx, element := range d.AzureMachineClass.Spec.Tags {
tagList[idx] = to.StringPtr(element)
}
NICParameters := network.Interface{
Name: &nicName,
Location: &location,
InterfacePropertiesFormat: &network.InterfacePropertiesFormat{
IPConfigurations: &[]network.InterfaceIPConfiguration{
{
Name: &nicName,
InterfaceIPConfigurationPropertiesFormat: &network.InterfaceIPConfigurationPropertiesFormat{
PrivateIPAllocationMethod: network.Dynamic,
Subnet: subnet,
},
},
},
EnableIPForwarding: &enableIPForwarding,
EnableAcceleratedNetworking: d.AzureMachineClass.Spec.Properties.NetworkProfile.AcceleratedNetworking,
},
Tags: tagList,
}
return NICParameters
}
func (d *AzureDriver) getVMParameters(vmName string, image *compute.VirtualMachineImage, networkInterfaceReferenceID string) compute.VirtualMachine {
var (
diskName = dependencyNameFromVMName(vmName, diskSuffix)
UserDataEnc = base64.StdEncoding.EncodeToString([]byte(d.UserData))
location = d.AzureMachineClass.Spec.Location
)
// Add tags to the machine resources
tagList := map[string]*string{}
for idx, element := range d.AzureMachineClass.Spec.Tags {
tagList[idx] = to.StringPtr(element)
}
imageReference := getImageReference(d)
var plan *compute.Plan
if image != nil && image.Plan != nil {
// If image.Plan exists, create a plan object and attach it to the VM
klog.V(2).Infof("Creating a plan object and attaching it to the VM - %q", vmName)
plan = &compute.Plan{
Name: image.VirtualMachineImageProperties.Plan.Name,
Product: image.VirtualMachineImageProperties.Plan.Product,
Publisher: image.VirtualMachineImageProperties.Plan.Publisher,
}
}
VMParameters := compute.VirtualMachine{
Name: &vmName,
Plan: plan,
Location: &location,
VirtualMachineProperties: &compute.VirtualMachineProperties{
HardwareProfile: &compute.HardwareProfile{
VMSize: compute.VirtualMachineSizeTypes(d.AzureMachineClass.Spec.Properties.HardwareProfile.VMSize),
},
StorageProfile: &compute.StorageProfile{
ImageReference: &imageReference,
OsDisk: &compute.OSDisk{
Name: &diskName,
Caching: compute.CachingTypes(d.AzureMachineClass.Spec.Properties.StorageProfile.OsDisk.Caching),
ManagedDisk: &compute.ManagedDiskParameters{
StorageAccountType: compute.StorageAccountTypes(d.AzureMachineClass.Spec.Properties.StorageProfile.OsDisk.ManagedDisk.StorageAccountType),
},
DiskSizeGB: &d.AzureMachineClass.Spec.Properties.StorageProfile.OsDisk.DiskSizeGB,
CreateOption: compute.DiskCreateOptionTypes(d.AzureMachineClass.Spec.Properties.StorageProfile.OsDisk.CreateOption),
},
},
OsProfile: &compute.OSProfile{
ComputerName: &vmName,
AdminUsername: &d.AzureMachineClass.Spec.Properties.OsProfile.AdminUsername,
CustomData: &UserDataEnc,
LinuxConfiguration: &compute.LinuxConfiguration{
DisablePasswordAuthentication: &d.AzureMachineClass.Spec.Properties.OsProfile.LinuxConfiguration.DisablePasswordAuthentication,
SSH: &compute.SSHConfiguration{
PublicKeys: &[]compute.SSHPublicKey{
{
Path: &d.AzureMachineClass.Spec.Properties.OsProfile.LinuxConfiguration.SSH.PublicKeys.Path,
KeyData: &d.AzureMachineClass.Spec.Properties.OsProfile.LinuxConfiguration.SSH.PublicKeys.KeyData,
},
},
},
},
},
NetworkProfile: &compute.NetworkProfile{
NetworkInterfaces: &[]compute.NetworkInterfaceReference{
{
ID: &networkInterfaceReferenceID,
NetworkInterfaceReferenceProperties: &compute.NetworkInterfaceReferenceProperties{
Primary: to.BoolPtr(true),
},
},
},
},
},
Tags: tagList,
}
if d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks != nil && len(d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks) > 0 {
dataDisks := d.generateDataDisks(vmName, d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks)
VMParameters.StorageProfile.DataDisks = &dataDisks
}
if d.AzureMachineClass.Spec.Properties.Zone != nil {
VMParameters.Zones = &[]string{strconv.Itoa(*d.AzureMachineClass.Spec.Properties.Zone)}
}
// DEPRECATED: This will be removed in future in favour of the machineSet field which has a type for AvailabilitySet.
if d.AzureMachineClass.Spec.Properties.AvailabilitySet != nil {
VMParameters.VirtualMachineProperties.AvailabilitySet = &compute.SubResource{
ID: &d.AzureMachineClass.Spec.Properties.AvailabilitySet.ID,
}
}
if d.AzureMachineClass.Spec.Properties.MachineSet != nil {
switch d.AzureMachineClass.Spec.Properties.MachineSet.Kind {
case machine.MachineSetKindVMO:
VMParameters.VirtualMachineProperties.VirtualMachineScaleSet = &compute.SubResource{
ID: &d.AzureMachineClass.Spec.Properties.MachineSet.ID,
}
case machine.MachineSetKindAvailabilitySet:
VMParameters.VirtualMachineProperties.AvailabilitySet = &compute.SubResource{
ID: &d.AzureMachineClass.Spec.Properties.MachineSet.ID,
}
}
}
if d.AzureMachineClass.Spec.Properties.IdentityID != nil && *d.AzureMachineClass.Spec.Properties.IdentityID != "" {
VMParameters.Identity = &compute.VirtualMachineIdentity{
Type: compute.ResourceIdentityTypeUserAssigned,
UserAssignedIdentities: map[string]*compute.VirtualMachineIdentityUserAssignedIdentitiesValue{
*d.AzureMachineClass.Spec.Properties.IdentityID: {},
},
}
}
return VMParameters
}
func getImageReference(d *AzureDriver) compute.ImageReference {
imageRefClass := d.AzureMachineClass.Spec.Properties.StorageProfile.ImageReference
if imageRefClass.ID != "" {
return compute.ImageReference{
ID: &imageRefClass.ID,
}
}
splits := strings.Split(*imageRefClass.URN, ":")
publisher := splits[0]
offer := splits[1]
sku := splits[2]
version := splits[3]
return compute.ImageReference{
Publisher: &publisher,
Offer: &offer,
Sku: &sku,
Version: &version,
}
}
func (d *AzureDriver) generateDataDisks(vmName string, azureDataDisks []v1alpha1.AzureDataDisk) []compute.DataDisk {
var dataDisks []compute.DataDisk
for i, azureDataDisk := range azureDataDisks {
var dataDiskLun *int32
if azureDataDisk.Lun != nil {
dataDiskLun = azureDataDisk.Lun
} else {
lun := int32(i)
dataDiskLun = &lun
}
dataDiskName := dependencyNameFromVMNameAndDependency(getAzureDataDiskPrefix(azureDataDisk.Name, dataDiskLun), vmName, dataDiskSuffix)
var caching compute.CachingTypes
if azureDataDisk.Caching != "" {
caching = compute.CachingTypes(azureDataDisk.Caching)
} else {
caching = compute.CachingTypesNone
}
dataDiskSize := azureDataDisk.DiskSizeGB
dataDisk := compute.DataDisk{
Lun: dataDiskLun,
Name: &dataDiskName,
Caching: caching,
ManagedDisk: &compute.ManagedDiskParameters{
StorageAccountType: compute.StorageAccountTypes(azureDataDisk.StorageAccountType),
},
DiskSizeGB: &dataDiskSize,
CreateOption: compute.DiskCreateOptionTypesEmpty,
}
dataDisks = append(dataDisks, dataDisk)
}
return dataDisks
}
// Create method is used to create an azure machine
func (d *AzureDriver) Create() (string, string, error) {
var (
vmName = strings.ToLower(d.MachineName)
location = d.AzureMachineClass.Spec.Location
)
_, err := d.createVMNicDisk()
if err != nil {
return "Error", "Error", err
}
return encodeMachineID(location, vmName), vmName, nil
}
// Delete method is used to delete an azure machine
func (d *AzureDriver) Delete(machineID string) error {
clients, err := d.setup()
if err != nil {
return err
}
var (
ctx = context.Background()
vmName = decodeMachineID(machineID)
nicName = dependencyNameFromVMName(vmName, nicSuffix)
diskName = dependencyNameFromVMName(vmName, diskSuffix)
resourceGroupName = d.AzureMachineClass.Spec.ResourceGroup
)
// Check if the underlying resource group still exists, if not skip the deletion as all resources are gone.
if _, err := clients.group.Get(ctx, resourceGroupName); err != nil {
if notFound(err) {
return nil
}
return err
}
var dataDiskNames []string
if d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks != nil && len(d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks) > 0 {
dataDiskNames = getAzureDataDiskNames(d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks, vmName, dataDiskSuffix)
}
if err := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames); err != nil {
return err
}
orphanNicChecker := func() error {
return retry(func() error {
return clients.checkOrphanNics(ctx, resourceGroupName, vmName)
}, 3, time.Second*30)
}
orphanDiskChecker := func() error {
return retry(func() error {
return clients.checkOrphanDisks(ctx, resourceGroupName, vmName)
}, 3, time.Second*30)
}
orphanCheckers := []func() error{orphanNicChecker, orphanDiskChecker}
return runInParallel(orphanCheckers)
}
// GetExisting method is used to fetch the machineID for an azure machine
func (d *AzureDriver) GetExisting() (string, error) {
return d.MachineID, nil
}
// GetVMs returns a list of VM or VM resources
// Azure earlier treated all VM resources (instance, NIC, Disks)
// as a single resource and atomically created/deleted them in the driver interface.
// This caused issues when the controller crashes, during deletions. To fix this,
// now GetVMs interface checks for all resources instead of just VMs.
func (d *AzureDriver) GetVMs(machineID string) (result VMs, err error) {
result = make(VMs)
mergeIntoResult := func(source VMs) {
for k, v := range source {
result[k] = v
}
}
clients, err := d.setup()
if err != nil {
return
}
var (
ctx = context.Background()
resourceGroupName = d.AzureMachineClass.Spec.ResourceGroup
location = d.AzureMachineClass.Spec.Location
tags = d.AzureMachineClass.Spec.Tags
)
listOfVMs, err := clients.getRelevantVMs(ctx, machineID, resourceGroupName, location, tags)
if err != nil {
return
}
mergeIntoResult(listOfVMs)
listOfVMsByNIC, err := clients.getRelevantNICs(ctx, machineID, resourceGroupName, location, tags)
if err != nil {
return
}
mergeIntoResult(listOfVMsByNIC)
listOfVMsByDisk, err := clients.getRelevantDisks(ctx, machineID, resourceGroupName, location, tags)
if err != nil {
return
}
mergeIntoResult(listOfVMsByDisk)
return
}
// GetUserData return the user data with which the VM will be booted
func (d *AzureDriver) GetUserData() string {
return d.UserData
}
// SetUserData set the used data whit which the VM will be booted
func (d *AzureDriver) SetUserData(userData string) {
d.UserData = userData
}
func (d *AzureDriver) setup() (*azureDriverClients, error) {
var (
subscriptionID = ExtractCredentialsFromData(d.CredentialsData, v1alpha1.AzureSubscriptionID, v1alpha1.AzureAlternativeSubscriptionID)
tenantID = ExtractCredentialsFromData(d.CredentialsData, v1alpha1.AzureTenantID, v1alpha1.AzureAlternativeTenantID)
clientID = ExtractCredentialsFromData(d.CredentialsData, v1alpha1.AzureClientID, v1alpha1.AzureAlternativeClientID)
clientSecret = ExtractCredentialsFromData(d.CredentialsData, v1alpha1.AzureClientSecret, v1alpha1.AzureAlternativeClientSecret)
env = azure.PublicCloud
)
return newClients(subscriptionID, tenantID, clientID, clientSecret, env)
}
type azureDriverClients struct {
subnet network.SubnetsClient
nic network.InterfacesClient
vm compute.VirtualMachinesClient
disk compute.DisksClient
deployments resources.DeploymentsClient
group resources.GroupsClient
images compute.VirtualMachineImagesClient
marketplace marketplaceordering.MarketplaceAgreementsClient
}
type azureTags map[string]string
func newClients(subscriptionID, tenantID, clientID, clientSecret string, env azure.Environment) (*azureDriverClients, error) {
oauthConfig, err := adal.NewOAuthConfig(env.ActiveDirectoryEndpoint, tenantID)
if err != nil {
return nil, err
}
spToken, err := adal.NewServicePrincipalToken(*oauthConfig, clientID, clientSecret, env.ResourceManagerEndpoint)
if err != nil {
return nil, err
}
authorizer := autorest.NewBearerAuthorizer(spToken)
subnetClient := network.NewSubnetsClient(subscriptionID)
subnetClient.Authorizer = authorizer
interfacesClient := network.NewInterfacesClient(subscriptionID)
interfacesClient.Authorizer = authorizer
vmClient := compute.NewVirtualMachinesClient(subscriptionID)
vmClient.Authorizer = authorizer
vmImagesClient := compute.NewVirtualMachineImagesClient(subscriptionID)
vmImagesClient.Authorizer = authorizer
diskClient := compute.NewDisksClient(subscriptionID)
diskClient.Authorizer = authorizer
groupClient := resources.NewGroupsClient(subscriptionID)
groupClient.Authorizer = authorizer
deploymentsClient := resources.NewDeploymentsClient(subscriptionID)
deploymentsClient.Authorizer = authorizer
marketplaceClient := marketplaceordering.NewMarketplaceAgreementsClient(subscriptionID)
marketplaceClient.Authorizer = authorizer
return &azureDriverClients{subnet: subnetClient, nic: interfacesClient, vm: vmClient, disk: diskClient, deployments: deploymentsClient, images: vmImagesClient, group: groupClient, marketplace: marketplaceClient}, nil
}
func (d *AzureDriver) createVMNicDisk() (*compute.VirtualMachine, error) {
var (
ctx = context.Background()
vmName = strings.ToLower(d.MachineName)
resourceGroupName = d.AzureMachineClass.Spec.ResourceGroup
vnetName = d.AzureMachineClass.Spec.SubnetInfo.VnetName
vnetResourceGroup = resourceGroupName
subnetName = d.AzureMachineClass.Spec.SubnetInfo.SubnetName
nicName = dependencyNameFromVMName(vmName, nicSuffix)
diskName = dependencyNameFromVMName(vmName, diskSuffix)
vmImageRef *compute.VirtualMachineImage
)
clients, err := d.setup()
if err != nil {
return nil, err
}
// Check if the machine should assigned to a vnet in a different resource group.
if d.AzureMachineClass.Spec.SubnetInfo.VnetResourceGroup != nil {
vnetResourceGroup = *d.AzureMachineClass.Spec.SubnetInfo.VnetResourceGroup
}
var dataDiskNames []string
if d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks != nil && len(d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks) > 0 {
dataDiskNames = getAzureDataDiskNames(d.AzureMachineClass.Spec.Properties.StorageProfile.DataDisks, vmName, dataDiskSuffix)
}
/*
Subnet fetching
*/
klog.V(3).Infof("Fetching subnet details for VM %q", vmName)
// Getting the subnet object for subnetName
subnet, err := clients.subnet.Get(
ctx,
vnetResourceGroup,
vnetName,
subnetName,
"",
)
if err != nil {
return nil, onARMAPIErrorFail(prometheusServiceSubnet, err, "Subnet.Get failed for %s due to %s", subnetName, err)
}
onARMAPISuccess(prometheusServiceSubnet, "subnet.Get")
NIC, err := clients.nic.Get(ctx, resourceGroupName, nicName, "")
if err != nil {
if isResourceNotFoundError(err) {
/*
NIC creation
Fetching NIC with matching name failed, hence create a new one.
*/
// Creating NICParameters for new NIC creation request
NICParameters := d.getNICParameters(vmName, &subnet)
// NIC creation request
klog.V(3).Infof("NIC creation started for %q", nicName)
NICFuture, err := clients.nic.CreateOrUpdate(ctx, resourceGroupName, *NICParameters.Name, NICParameters)
if err != nil {
// Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceNIC, err, "NIC.CreateOrUpdate failed for %s", *NICParameters.Name)
}
// Wait until NIC is created
err = NICFuture.WaitForCompletionRef(ctx, clients.nic.Client)
if err != nil {
// Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceNIC, err, "NIC.WaitForCompletionRef failed for %s", *NICParameters.Name)
}
onARMAPISuccess(prometheusServiceNIC, "NIC.CreateOrUpdate")
// Fetch NIC details
NIC, err = NICFuture.Result(clients.nic)
if err != nil {
// Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, err
}
klog.V(3).Infof("NIC creation was successful for %q", nicName)
} else {
// Get on NIC returns a non 404 error. Exiting creation with the error.
// Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceNIC, err, "NIC.Get failed for %s", nicName)
}
} else {
klog.V(3).Infof("Found existing NIC with matching name, hence adopting NIC with name %q", nicName)
}
/*
VM creation
*/
imageRefClass := d.AzureMachineClass.Spec.Properties.StorageProfile.ImageReference
// if ID is not set the image is referenced using a URN
if imageRefClass.ID == "" {
imageReference := getImageReference(d)
vmImage, err := clients.images.Get(
ctx,
d.AzureMachineClass.Spec.Location,
*imageReference.Publisher,
*imageReference.Offer,
*imageReference.Sku,
*imageReference.Version)
if err != nil {
//Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceVM, err, "VirtualMachineImagesClient.Get failed for %s", d.AzureMachineClass.Name)
}
if vmImage.Plan != nil {
// If VMImage.Plan exists, check if agreement is accepted and if not accept it for the subscription
agreement, err := clients.marketplace.Get(
ctx,
*vmImage.Plan.Publisher,
*vmImage.Plan.Product,
*vmImage.Plan.Name,
)
if err != nil {
//Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceVM, err, "MarketplaceAgreementsClient.Get failed for %s", d.AzureMachineClass.Name)
}
if agreement.Accepted == nil || *agreement.Accepted == false {
// Need to accept the terms at least once for the subscription
klog.V(2).Info("Accepting terms for subscription to make use of the plan")
agreement.Accepted = to.BoolPtr(true)
_, err = clients.marketplace.Create(
ctx,
*vmImage.Plan.Publisher,
*vmImage.Plan.Product,
*vmImage.Plan.Name,
agreement,
)
if err != nil {
//Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceVM, err, "MarketplaceAgreementsClient.Create failed for %s", d.AzureMachineClass.Name)
}
}
}
vmImageRef = &vmImage
}
// Creating VMParameters for new VM creation request
VMParameters := d.getVMParameters(vmName, vmImageRef, *NIC.ID)
// VM creation request
klog.V(3).Infof("VM creation began for %q", vmName)
VMFuture, err := clients.vm.CreateOrUpdate(ctx, resourceGroupName, *VMParameters.Name, VMParameters)
if err != nil {
//Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceVM, err, "VM.CreateOrUpdate failed for %s", *VMParameters.Name)
}
// Wait until VM is created
klog.V(3).Infof("Waiting for VM create call completion for %q", vmName)
err = VMFuture.WaitForCompletionRef(ctx, clients.vm.Client)
if err != nil {
// Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceVM, err, "VM.WaitForCompletionRef failed for %s", *VMParameters.Name)
}
// Fetch VM details
VM, err := VMFuture.Result(clients.vm)
if err != nil {
// Since machine creation failed, delete any infra resources created
deleteErr := clients.deleteVMNicDisks(ctx, resourceGroupName, vmName, nicName, diskName, dataDiskNames)
if deleteErr != nil {
klog.Errorf("Error occurred during resource clean up: %s", deleteErr)
}
return nil, onARMAPIErrorFail(prometheusServiceVM, err, "VMFuture.Result failed for %s", *VMParameters.Name)
}
onARMAPISuccess(prometheusServiceVM, "VM.CreateOrUpdate")
klog.V(3).Infof("VM has been created succesfully for %q", vmName)
return &VM, nil
}
func (clients *azureDriverClients) getAllVMs(ctx context.Context, resourceGroupName string) ([]compute.VirtualMachine, error) {
var items []compute.VirtualMachine
result, err := clients.vm.List(ctx, resourceGroupName)
if err != nil {
return items, onARMAPIErrorFail(prometheusServiceVM, err, "vm.List")
}
items = append(items, result.Values()...)
for result.NotDone() {
err = result.NextWithContext(ctx)
if err != nil {
return items, onARMAPIErrorFail(prometheusServiceVM, err, "vm.List")
}
items = append(items, result.Values()...)
}
onARMAPISuccess(prometheusServiceVM, "vm.List")
return items, nil
}
func (clients *azureDriverClients) getAllNICs(ctx context.Context, resourceGroupName string) ([]network.Interface, error) {
var items []network.Interface
result, err := clients.nic.List(ctx, resourceGroupName)
if err != nil {
return items, onARMAPIErrorFail(prometheusServiceNIC, err, "nic.List")
}
items = append(items, result.Values()...)
for result.NotDone() {
err = result.NextWithContext(ctx)
if err != nil {
return items, onARMAPIErrorFail(prometheusServiceNIC, err, "nic.List")
}
items = append(items, result.Values()...)
}
onARMAPISuccess(prometheusServiceNIC, "nic.List")
return items, nil
}
func (clients *azureDriverClients) getAllDisks(ctx context.Context, resourceGroupName string) ([]compute.Disk, error) {
var items []compute.Disk
result, err := clients.disk.ListByResourceGroup(ctx, resourceGroupName)
if err != nil {
return items, onARMAPIErrorFail(prometheusServiceDisk, err, "disk.ListByResourceGroup")
}
items = append(items, result.Values()...)
for result.NotDone() {
err = result.NextWithContext(ctx)
if err != nil {
return items, onARMAPIErrorFail(prometheusServiceDisk, err, "disk.ListByResourceGroup")
}
items = append(items, result.Values()...)
}
onARMAPISuccess(prometheusServiceDisk, "disk.ListByResourceGroup")
return items, nil
}
// getRelevantVMs is a helper method used to list actual vm instances
func (clients *azureDriverClients) getRelevantVMs(ctx context.Context, machineID string, resourceGroupName string, location string, tags azureTags) (VMs, error) {
var (
listOfVMs = make(VMs)
searchClusterName = ""
searchNodeRole = ""
)
for key := range tags {
if strings.Contains(key, "kubernetes.io-cluster-") {
searchClusterName = key
} else if strings.Contains(key, "kubernetes.io-role-") {
searchNodeRole = key
}
}
if searchClusterName == "" ||
searchNodeRole == "" ||
resourceGroupName == "" {
return listOfVMs, nil
}
machines, err := clients.getAllVMs(ctx, resourceGroupName)
if err != nil {
return listOfVMs, err
}
if len(machines) > 0 {
for _, server := range machines {
if !verifyAzureTags(server.Tags, searchClusterName, searchNodeRole) {
klog.V(2).Infof("%q VM found, but not verified with tags %s and %s", *server.Name, searchClusterName, searchNodeRole)
continue
}
instanceID := encodeMachineID(location, *server.Name)
if machineID == "" {
listOfVMs[instanceID] = *server.Name
} else if machineID == instanceID {
listOfVMs[instanceID] = *server.Name
klog.V(3).Infof("Found machine with name: %q", *server.Name)
break
}
}
}
return listOfVMs, nil
}
// getRelevantNICs is helper method used to list NICs
func (clients *azureDriverClients) getRelevantNICs(ctx context.Context, machineID string, resourceGroupName string, location string, tags azureTags) (VMs, error) {
var (
listOfVMs = make(VMs)
searchClusterName = ""
searchNodeRole = ""
)
for key := range tags {
if strings.Contains(key, "kubernetes.io-cluster-") {
searchClusterName = key
} else if strings.Contains(key, "kubernetes.io-role-") {
searchNodeRole = key
}
}
if searchClusterName == "" || searchNodeRole == "" || resourceGroupName == "" {
return listOfVMs, nil
}
interfaces, err := clients.getAllNICs(ctx, resourceGroupName)
if err != nil {
return listOfVMs, err
}
if len(interfaces) > 0 {
for _, nic := range interfaces {
isNic, machineName := vmNameFromDependencyName(*nic.Name, nicSuffix)
if !isNic {
continue
}
if !verifyAzureTags(nic.Tags, searchClusterName, searchNodeRole) {
klog.V(2).Infof("%q NIC found, but not verified with tags %s and %s", *nic.Name, searchClusterName, searchNodeRole)
continue
}
instanceID := encodeMachineID(location, machineName)
if machineID == "" {
listOfVMs[instanceID] = machineName
} else if machineID == instanceID {
listOfVMs[instanceID] = machineName
klog.V(3).Infof("Found nic with name %q, hence appending machine %q", *nic.Name, machineName)
break
}
}
}
return listOfVMs, nil
}
// getRelevantDisks is a helper method used to list disks
func (clients *azureDriverClients) getRelevantDisks(ctx context.Context, machineID string, resourceGroupName string, location string, tags azureTags) (VMs, error) {
var (
listOfVMs = make(VMs)
searchClusterName = ""
searchNodeRole = ""
)
for key := range tags {
if strings.Contains(key, "kubernetes.io-cluster-") {
searchClusterName = key
} else if strings.Contains(key, "kubernetes.io-role-") {
searchNodeRole = key
}
}
if searchClusterName == "" ||
searchNodeRole == "" ||
resourceGroupName == "" {
return listOfVMs, nil
}
disks, err := clients.getAllDisks(ctx, resourceGroupName)
if err != nil {
return listOfVMs, err
}
if len(disks) > 0 {
for _, disk := range disks {
if disk.OsType != "" {
isDisk, machineName := vmNameFromDependencyName(*disk.Name, diskSuffix)
if !isDisk {
continue
}
if !verifyAzureTags(disk.Tags, searchClusterName, searchNodeRole) {
klog.V(2).Infof("%q Disk found, but not verified with tags %s and %s", *disk.Name, searchClusterName, searchNodeRole)
continue
}
instanceID := encodeMachineID(location, machineName)
if machineID == "" {
listOfVMs[instanceID] = machineName
} else if machineID == instanceID {
listOfVMs[instanceID] = machineName
klog.V(3).Infof("Found disk with name %q, hence appending machine %q", *disk.Name, machineName)
break
}
}
}
}
return listOfVMs, nil
}
func (clients *azureDriverClients) fetchAttachedVMfromNIC(ctx context.Context, resourceGroupName, nicName string) (string, error) {
nic, err := clients.nic.Get(ctx, resourceGroupName, nicName, "")
if err != nil {
return "", err
}
if nic.VirtualMachine == nil {
return "", nil
}
return *nic.VirtualMachine.ID, nil
}
func (clients *azureDriverClients) fetchAttachedVMfromDisk(ctx context.Context, resourceGroupName, diskName string) (string, error) {
disk, err := clients.disk.Get(ctx, resourceGroupName, diskName)
if err != nil {
return "", err
}
if disk.ManagedBy == nil {
return "", nil
}
return *disk.ManagedBy, nil
}
func (clients *azureDriverClients) deleteVMNicDisks(ctx context.Context, resourceGroupName string, VMName string, nicName string, diskName string, dataDiskNames []string) error {
// We try to fetch the VM, detach its data disks and finally delete it
if vm, vmErr := clients.vm.Get(ctx, resourceGroupName, VMName, ""); vmErr == nil {
clients.waitForDataDiskDetachment(ctx, resourceGroupName, vm)
if deleteErr := clients.deleteVM(ctx, resourceGroupName, VMName); deleteErr != nil {
return deleteErr
}
onARMAPISuccess(prometheusServiceVM, "VM Get was successful for %s", *vm.Name)
} else if !notFound(vmErr) {
// If some other error occurred, which is not 404 Not Found (the VM doesn't exist) then bubble up
return onARMAPIErrorFail(prometheusServiceVM, vmErr, "vm.Get")
}
// Fetch the NIC and deleted it
nicDeleter := func() error {
if vmHoldingNic, err := clients.fetchAttachedVMfromNIC(ctx, resourceGroupName, nicName); err != nil {
if notFound(err) {
// Resource doesn't exist, no need to delete
return nil
}
return err
} else if vmHoldingNic != "" {
return fmt.Errorf("Cannot delete NIC %s because it is attached to VM %s", nicName, vmHoldingNic)
}
return clients.deleteNIC(ctx, resourceGroupName, nicName)
}
// Fetch the system disk and delete it
diskDeleter := clients.getDeleterForDisk(ctx, resourceGroupName, diskName)
deleters := []func() error{nicDeleter, diskDeleter}
if dataDiskNames != nil {
for _, dataDiskName := range dataDiskNames {
dataDiskDeleter := clients.getDeleterForDisk(ctx, resourceGroupName, dataDiskName)
deleters = append(deleters, dataDiskDeleter)
}
}
return runInParallel(deleters)
}
func (clients *azureDriverClients) getDeleterForDisk(ctx context.Context, resourceGroupName string, diskName string) func() error {
return func() error {
if vmHoldingDisk, err := clients.fetchAttachedVMfromDisk(ctx, resourceGroupName, diskName); err != nil {
if notFound(err) {
// Resource doesn't exist, no need to delete
return nil
}
return err
} else if vmHoldingDisk != "" {
return fmt.Errorf("Cannot delete disk %s because it is attached to VM %s", diskName, vmHoldingDisk)
}
return clients.deleteDisk(ctx, resourceGroupName, diskName)
}
}
// waitForDataDiskDetachment waits for data disks to be detached
func (clients *azureDriverClients) waitForDataDiskDetachment(ctx context.Context, resourceGroupName string, vm compute.VirtualMachine) error {
klog.V(2).Infof("Data disk detachment began for %q", *vm.Name)
defer klog.V(2).Infof("Data disk detached for %q", *vm.Name)
if len(*vm.StorageProfile.DataDisks) > 0 {
// There are disks attached hence need to detach them
vm.StorageProfile.DataDisks = &[]compute.DataDisk{}
future, err := clients.vm.CreateOrUpdate(ctx, resourceGroupName, *vm.Name, vm)
if err != nil {
return onARMAPIErrorFail(prometheusServiceVM, err, "Failed to CreateOrUpdate. Error Message - %s", err)
}
err = future.WaitForCompletionRef(ctx, clients.vm.Client)