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aksengine_helpers.go
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aksengine_helpers.go
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/*
Copyright 2018 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 main
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"path"
"time"
"github.com/Azure/azure-sdk-for-go/services/authorization/mgmt/2015-07-01/authorization"
"github.com/Azure/azure-sdk-for-go/services/containerservice/mgmt/2019-10-01/containerservice"
"github.com/Azure/azure-sdk-for-go/services/preview/msi/mgmt/2015-08-31-preview/msi"
"github.com/Azure/azure-sdk-for-go/services/resources/mgmt/2018-05-01/resources"
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/adal"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/pelletier/go-toml"
uuid "github.com/satori/go.uuid"
)
const (
// aadOwnerRoleID is the role id that exists in every subscription for 'Owner'
aadOwnerRoleID = "8e3af657-a8ff-443c-a75c-2fe8c4bcb635"
// aadRoleReferenceTemplate is a template for a roleDefinitionId
aadRoleReferenceTemplate = "/subscriptions/%s/providers/Microsoft.Authorization/roleDefinitions/%s"
// aadRoleResourceGroupScopeTemplate is a template for a roleDefinition scope
aadRoleResourceGroupScopeTemplate = "/subscriptions/%s"
)
type AKSEngineAPIModel struct {
Location string `json:"location,omitempty"`
Name string `json:"name,omitempty"`
Tags map[string]string `json:"tags,omitempty"`
APIVersion string `json:"apiVersion"`
Properties *Properties `json:"properties"`
}
type Properties struct {
OrchestratorProfile *OrchestratorProfile `json:"orchestratorProfile,omitempty"`
MasterProfile *MasterProfile `json:"masterProfile,omitempty"`
AgentPoolProfiles []*AgentPoolProfile `json:"agentPoolProfiles,omitempty"`
LinuxProfile *LinuxProfile `json:"linuxProfile,omitempty"`
WindowsProfile *WindowsProfile `json:"windowsProfile,omitempty"`
ServicePrincipalProfile *ServicePrincipalProfile `json:"servicePrincipalProfile,omitempty"`
ExtensionProfiles []map[string]string `json:"extensionProfiles,omitempty"`
CustomCloudProfile *CustomCloudProfile `json:"customCloudProfile,omitempty"`
FeatureFlags *FeatureFlags `json:"featureFlags,omitempty"`
}
type ServicePrincipalProfile struct {
ClientID string `json:"clientId,omitempty"`
Secret string `json:"secret,omitempty"`
}
type LinuxProfile struct {
AdminUsername string `json:"adminUsername"`
SSHKeys *SSH `json:"ssh"`
}
type SSH struct {
PublicKeys []PublicKey `json:"publicKeys"`
}
type PublicKey struct {
KeyData string `json:"keyData"`
}
type WindowsProfile struct {
AdminUsername string `json:"adminUsername,omitempty"`
AdminPassword string `json:"adminPassword,omitempty"`
ImageVersion string `json:"imageVersion,omitempty"`
WindowsImageSourceURL string `json:"WindowsImageSourceUrl"`
WindowsPublisher string `json:"WindowsPublisher"`
WindowsOffer string `json:"WindowsOffer"`
WindowsSku string `json:"WindowsSku"`
WindowsDockerVersion string `json:"windowsDockerVersion"`
SSHEnabled bool `json:"sshEnabled,omitempty"`
EnableCSIProxy bool `json:"enableCSIProxy,omitempty"`
CSIProxyURL string `json:"csiProxyURL,omitempty"`
WindowsRuntimes *WindowsRuntimes `json:"windowsRuntimes,omitempty"`
WindowsPauseImageURL string `json:"windowsPauseImageURL,omitempty"`
}
// WindowsRuntimes configures containerd runtimes that are available on the windows nodes
type WindowsRuntimes struct {
Default string `json:"default,omitempty"`
HypervRuntimes []RuntimeHandlers `json:"hypervRuntimes,omitempty"`
}
// RuntimeHandlers configures the runtime settings in containerd
type RuntimeHandlers struct {
BuildNumber string `json:"buildNumber,omitempty"`
}
// KubernetesContainerSpec defines configuration for a container spec
type KubernetesContainerSpec struct {
Name string `json:"name,omitempty"`
Image string `json:"image,omitempty"`
CPURequests string `json:"cpuRequests,omitempty"`
MemoryRequests string `json:"memoryRequests,omitempty"`
CPULimits string `json:"cpuLimits,omitempty"`
MemoryLimits string `json:"memoryLimits,omitempty"`
}
// AddonNodePoolsConfig defines configuration for pool-specific cluster-autoscaler configuration
type AddonNodePoolsConfig struct {
Name string `json:"name,omitempty"`
Config map[string]string `json:"config,omitempty"`
}
// KubernetesAddon defines a list of addons w/ configuration to include with the cluster deployment
type KubernetesAddon struct {
Name string `json:"name,omitempty"`
Enabled *bool `json:"enabled,omitempty"`
Mode string `json:"mode,omitempty"`
Containers []KubernetesContainerSpec `json:"containers,omitempty"`
Config map[string]string `json:"config,omitempty"`
Pools []AddonNodePoolsConfig `json:"pools,omitempty"`
Data string `json:"data,omitempty"`
}
type KubernetesConfig struct {
ContainerRuntime string `json:"containerRuntime,omitempty"`
CustomWindowsPackageURL string `json:"customWindowsPackageURL,omitempty"`
CustomHyperkubeImage string `json:"customHyperkubeImage,omitempty"`
CustomCcmImage string `json:"customCcmImage,omitempty"` // Image for cloud-controller-manager
UseCloudControllerManager *bool `json:"useCloudControllerManager,omitempty"`
NetworkPlugin string `json:"networkPlugin,omitempty"`
PrivateAzureRegistryServer string `json:"privateAzureRegistryServer,omitempty"`
AzureCNIURLLinux string `json:"azureCNIURLLinux,omitempty"`
AzureCNIURLWindows string `json:"azureCNIURLWindows,omitempty"`
Addons []KubernetesAddon `json:"addons,omitempty"`
NetworkPolicy string `json:"networkPolicy,omitempty"`
CloudProviderRateLimitQPS float64 `json:"cloudProviderRateLimitQPS,omitempty"`
CloudProviderRateLimitBucket int `json:"cloudProviderRateLimitBucket,omitempty"`
APIServerConfig map[string]string `json:"apiServerConfig,omitempty"`
CloudControllerManagerConfig map[string]string `json:"cloudControllerManagerConfig,omitempty"`
KubernetesImageBase string `json:"kubernetesImageBase,omitempty"`
ControllerManagerConfig map[string]string `json:"controllerManagerConfig,omitempty"`
KubeletConfig map[string]string `json:"kubeletConfig,omitempty"`
SchedulerConfig map[string]string `json:"schedulerConfig,omitempty"`
KubeProxyMode string `json:"kubeProxyMode,omitempty"`
LoadBalancerSku string `json:"loadBalancerSku,omitempty"`
ExcludeMasterFromStandardLB *bool `json:"excludeMasterFromStandardLB,omitempty"`
ServiceCidr string `json:"serviceCidr,omitempty"`
DNSServiceIP string `json:"dnsServiceIP,omitempty"`
OutboundRuleIdleTimeoutInMinutes int32 `json:"outboundRuleIdleTimeoutInMinutes,omitempty"`
ClusterSubnet string `json:"clusterSubnet,omitempty"`
CustomKubeAPIServerImage string `json:"customKubeAPIServerImage,omitempty"`
CustomKubeControllerManagerImage string `json:"customKubeControllerManagerImage,omitempty"`
CustomKubeProxyImage string `json:"customKubeProxyImage,omitempty"`
CustomKubeSchedulerImage string `json:"customKubeSchedulerImage,omitempty"`
CustomKubeBinaryURL string `json:"customKubeBinaryURL,omitempty"`
UseManagedIdentity *bool `json:"useManagedIdentity,omitempty"`
UserAssignedID string `json:"userAssignedID,omitempty"`
WindowsContainerdURL string `json:"windowsContainerdURL,omitempty"`
WindowsSdnPluginURL string `json:"windowsSdnPluginURL,omitempty"`
}
type OrchestratorProfile struct {
OrchestratorType string `json:"orchestratorType"`
OrchestratorRelease string `json:"orchestratorRelease"`
KubernetesConfig *KubernetesConfig `json:"kubernetesConfig,omitempty"`
}
type MasterProfile struct {
Count int `json:"count"`
Distro string `json:"distro"`
DNSPrefix string `json:"dnsPrefix"`
VMSize string `json:"vmSize" validate:"required"`
IPAddressCount int `json:"ipAddressCount,omitempty"`
Extensions []map[string]string `json:"extensions,omitempty"`
OSDiskSizeGB int `json:"osDiskSizeGB,omitempty" validate:"min=0,max=1023"`
AvailabilityProfile string `json:"availabilityProfile,omitempty"`
AvailabilityZones []string `json:"availabilityZones,omitempty"`
UltraSSDEnabled bool `json:"ultraSSDEnabled,omitempty"`
}
type AgentPoolProfile struct {
Name string `json:"name"`
Count int `json:"count"`
Distro string `json:"distro"`
VMSize string `json:"vmSize"`
OSType string `json:"osType,omitempty"`
AvailabilityProfile string `json:"availabilityProfile"`
AvailabilityZones []string `json:"availabilityZones,omitempty"`
IPAddressCount int `json:"ipAddressCount,omitempty"`
PreProvisionExtension map[string]string `json:"preProvisionExtension,omitempty"`
Extensions []map[string]string `json:"extensions,omitempty"`
OSDiskSizeGB int `json:"osDiskSizeGB,omitempty" validate:"min=0,max=1023"`
EnableVMSSNodePublicIP bool `json:"enableVMSSNodePublicIP,omitempty"`
StorageProfile string `json:"storageProfile,omitempty"`
UltraSSDEnabled bool `json:"ultraSSDEnabled,omitempty"`
}
type AzureClient struct {
environment azure.Environment
subscriptionID string
deploymentsClient resources.DeploymentsClient
groupsClient resources.GroupsClient
msiClient msi.UserAssignedIdentitiesClient
authorizationClient authorization.RoleAssignmentsClient
managedClustersClient containerservice.ManagedClustersClient
}
type FeatureFlags struct {
EnableIPv6DualStack bool `json:"enableIPv6DualStack,omitempty"`
EnableIPv6Only bool `json:"enableIPv6Only,omitempty"`
EnableTelemetry bool `json:"enableTelemetry,omitempty"`
}
// CustomCloudProfile defines configuration for custom cloud profile( for ex: Azure Stack)
type CustomCloudProfile struct {
PortalURL string `json:"portalURL,omitempty"`
}
// AzureStackMetadataEndpoints defines configuration for Azure Stack
type AzureStackMetadataEndpoints struct {
GalleryEndpoint string `json:"galleryEndpoint,omitempty"`
GraphEndpoint string `json:"graphEndpoint,omitempty"`
PortalEndpoint string `json:"portalEndpoint,omitempty"`
Authentication *AzureStackMetadataAuthentication `json:"authentication,omitempty"`
}
// AzureStackMetadataAuthentication defines configuration for Azure Stack
type AzureStackMetadataAuthentication struct {
LoginEndpoint string `json:"loginEndpoint,omitempty"`
Audiences []string `json:"audiences,omitempty"`
}
func (az *AzureClient) ValidateDeployment(ctx context.Context, resourceGroupName, deploymentName string, template, params *map[string]interface{}) (valid resources.DeploymentValidateResult, err error) {
return az.deploymentsClient.Validate(ctx,
resourceGroupName,
deploymentName,
resources.Deployment{
Properties: &resources.DeploymentProperties{
Template: template,
Parameters: params,
Mode: resources.Incremental,
},
})
}
func (az *AzureClient) DeployTemplate(ctx context.Context, resourceGroupName, deploymentName string, template, parameters *map[string]interface{}) (de resources.DeploymentExtended, err error) {
future, err := az.deploymentsClient.CreateOrUpdate(
ctx,
resourceGroupName,
deploymentName,
resources.Deployment{
Properties: &resources.DeploymentProperties{
Template: template,
Parameters: parameters,
Mode: resources.Incremental,
},
})
if err != nil {
return de, fmt.Errorf("cannot create deployment: %v", err)
}
err = future.WaitForCompletionRef(ctx, az.deploymentsClient.Client)
if err != nil {
return de, fmt.Errorf("cannot get the create deployment future response: %v", err)
}
return future.Result(az.deploymentsClient)
}
func (az *AzureClient) EnsureResourceGroup(ctx context.Context, name, location string, managedBy *string) (resourceGroup *resources.Group, err error) {
var tags map[string]*string
group, err := az.groupsClient.Get(ctx, name)
if err == nil && group.Tags != nil {
tags = group.Tags
} else {
tags = make(map[string]*string)
}
// Tags for correlating resource groups with prow jobs on testgrid
tags["buildID"] = stringPointer(os.Getenv("BUILD_ID"))
tags["jobName"] = stringPointer(os.Getenv("JOB_NAME"))
tags["creationTimestamp"] = stringPointer(time.Now().UTC().Format(time.RFC3339))
response, err := az.groupsClient.CreateOrUpdate(ctx, name, resources.Group{
Name: &name,
Location: &location,
ManagedBy: managedBy,
Tags: tags,
})
if err != nil {
return &response, err
}
return &response, nil
}
func (az *AzureClient) DeleteResourceGroup(ctx context.Context, groupName string) error {
_, err := az.groupsClient.Get(ctx, groupName)
if err == nil {
future, err := az.groupsClient.Delete(ctx, groupName)
if err != nil {
return fmt.Errorf("cannot delete resource group %v: %v", groupName, err)
}
err = future.WaitForCompletionRef(ctx, az.groupsClient.Client)
if err != nil {
// Skip the teardown errors because of https://github.com/Azure/go-autorest/issues/357
// TODO(feiskyer): fix the issue by upgrading go-autorest version >= v11.3.2.
log.Printf("Warning: failed to delete resource group %q with error %v", groupName, err)
}
}
return nil
}
func (az *AzureClient) AssignOwnerRoleToIdentity(ctx context.Context, resourceGroupName, identityName string) error {
identity, err := az.msiClient.Get(ctx, resourceGroupName, identityName)
if err != nil {
return fmt.Errorf("failed to get identity's client ID: %v", err)
}
identityPrincipalID := identity.PrincipalID.String()
// Grant the identity 'Owner' access to the subscription
// so it can pull images from private registry
roleDefinitionID := fmt.Sprintf(aadRoleReferenceTemplate, az.subscriptionID, aadOwnerRoleID)
scope := fmt.Sprintf(aadRoleResourceGroupScopeTemplate, az.subscriptionID)
roleAssignmentParameters := authorization.RoleAssignmentCreateParameters{
Properties: &authorization.RoleAssignmentProperties{
RoleDefinitionID: stringPointer(roleDefinitionID),
PrincipalID: stringPointer(identityPrincipalID),
},
}
if _, err := az.authorizationClient.Create(ctx, scope, uuid.NewV1().String(), roleAssignmentParameters); err != nil {
return fmt.Errorf("failed to assign 'Owner' role to user assigned identity: %v", err)
}
return nil
}
func getOAuthConfig(env azure.Environment, subscriptionID, tenantID string) (*adal.OAuthConfig, error) {
oauthConfig, err := adal.NewOAuthConfig(env.ActiveDirectoryEndpoint, tenantID)
if err != nil {
return nil, err
}
return oauthConfig, nil
}
func getAzCredentials() (*Creds, error) {
content, err := ioutil.ReadFile(*aksCredentialsFile)
log.Printf("Reading credentials file %v", *aksCredentialsFile)
if err != nil {
return nil, fmt.Errorf("error reading credentials file %v %v", *aksCredentialsFile, err)
}
config := Config{}
err = toml.Unmarshal(content, &config)
if err != nil {
return nil, fmt.Errorf("error parsing credentials file %v %v", *aksCredentialsFile, err)
}
return &config.Creds, nil
}
func getAzureClient(env azure.Environment, subscriptionID, clientID, tenantID, clientSecret string) (*AzureClient, error) {
oauthConfig, err := getOAuthConfig(env, subscriptionID, tenantID)
if err != nil {
return nil, err
}
armSpt, err := adal.NewServicePrincipalToken(*oauthConfig, clientID, clientSecret, env.ServiceManagementEndpoint)
if err != nil {
return nil, err
}
return getClient(env, subscriptionID, tenantID, armSpt), nil
}
func getClient(env azure.Environment, subscriptionID, tenantID string, armSpt *adal.ServicePrincipalToken) *AzureClient {
c := &AzureClient{
environment: env,
subscriptionID: subscriptionID,
deploymentsClient: resources.NewDeploymentsClientWithBaseURI(env.ResourceManagerEndpoint, subscriptionID),
groupsClient: resources.NewGroupsClientWithBaseURI(env.ResourceManagerEndpoint, subscriptionID),
msiClient: msi.NewUserAssignedIdentitiesClient(subscriptionID),
authorizationClient: authorization.NewRoleAssignmentsClientWithBaseURI(env.ResourceManagerEndpoint, subscriptionID),
managedClustersClient: containerservice.NewManagedClustersClientWithBaseURI(env.ResourceManagerEndpoint, subscriptionID),
}
authorizer := autorest.NewBearerAuthorizer(armSpt)
c.deploymentsClient.Authorizer = authorizer
c.deploymentsClient.PollingDuration = 60 * time.Minute
c.groupsClient.Authorizer = authorizer
c.msiClient.Authorizer = authorizer
c.authorizationClient.Authorizer = authorizer
c.managedClustersClient.Authorizer = authorizer
return c
}
func downloadFromURL(url string, destination string, retry int) (string, error) {
f, err := os.Create(destination)
if err != nil {
return "", err
}
defer f.Close()
for i := 0; i < retry; i++ {
log.Printf("downloading %v from %v", destination, url)
if err := httpRead(url, f); err == nil {
break
}
err = fmt.Errorf("url=%s failed get %v: %v", url, destination, err)
if i == retry-1 {
return "", err
}
log.Println(err)
sleep(time.Duration(i) * time.Second)
}
f.Chmod(0644)
return destination, nil
}
func populateAzureCloudConfig(isVMSS bool, credentials Creds, azureEnvironment, resourceGroup, location, outputDir string) error {
// CLOUD_CONFIG is required when running Azure-specific e2e tests
// See https://github.com/kubernetes/kubernetes/blob/master/hack/ginkgo-e2e.sh#L113-L118
cc := map[string]string{
"cloud": azureEnvironment,
"tenantId": credentials.TenantID,
"subscriptionId": credentials.SubscriptionID,
"aadClientId": credentials.ClientID,
"aadClientSecret": credentials.ClientSecret,
"resourceGroup": resourceGroup,
"location": location,
}
if isVMSS {
cc["vmType"] = vmTypeVMSS
} else {
cc["vmType"] = vmTypeStandard
}
cloudConfig, err := json.MarshalIndent(cc, "", " ")
if err != nil {
return fmt.Errorf("error creating Azure cloud config: %v", err)
}
cloudConfigPath := path.Join(outputDir, "azure.json")
if err := ioutil.WriteFile(cloudConfigPath, cloudConfig, 0644); err != nil {
return fmt.Errorf("cannot write Azure cloud config to file: %v", err)
}
if err := os.Setenv("CLOUD_CONFIG", cloudConfigPath); err != nil {
return fmt.Errorf("error setting CLOUD_CONFIG=%s: %v", cloudConfigPath, err)
}
return nil
}
func stringPointer(s string) *string {
return &s
}
func boolPointer(b bool) *bool {
return &b
}
func toBool(b *bool) bool {
if b == nil {
return false
}
return *b
}
func installAzureCLI() error {
if err := control.FinishRunning(exec.Command("curl", "-sL", "https://packages.microsoft.com/keys/microsoft.asc", "-o", "msft.asc")); err != nil {
return err
}
if err := control.FinishRunning(exec.Command("gpg", "--batch", "--yes", "-o", "/etc/apt/trusted.gpg.d/microsoft.asc.gpg", "--dearmor", "msft.asc")); err != nil {
return err
}
if err := control.FinishRunning(exec.Command("bash", "-c", "echo \"deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli $(lsb_release -cs) main\" | tee /etc/apt/sources.list.d/azure-cli.list")); err != nil {
return err
}
if err := control.FinishRunning(exec.Command("apt-get", "update")); err != nil {
return err
}
if err := control.FinishRunning(exec.Command("apt-get", "install", "-y", "azure-cli")); err != nil {
return err
}
if err := os.Remove("msft.asc"); err != nil {
return err
}
return nil
}