mirror of https://github.com/k3s-io/k3s
94 lines
2.8 KiB
Go
94 lines
2.8 KiB
Go
// +build !providerless
|
|
|
|
/*
|
|
Copyright 2019 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 azure
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/klog"
|
|
"sigs.k8s.io/yaml"
|
|
)
|
|
|
|
const (
|
|
cloudConfigNamespace = "kube-system"
|
|
cloudConfigKey = "cloud-config"
|
|
cloudConfigSecretName = "azure-cloud-provider"
|
|
)
|
|
|
|
// The config type for Azure cloud provider secret. Supported values are:
|
|
// * file : The values are read from local cloud-config file.
|
|
// * secret : The values from secret would override all configures from local cloud-config file.
|
|
// * merge : The values from secret would override only configurations that are explicitly set in the secret. This is the default value.
|
|
type cloudConfigType string
|
|
|
|
const (
|
|
cloudConfigTypeFile cloudConfigType = "file"
|
|
cloudConfigTypeSecret cloudConfigType = "secret"
|
|
cloudConfigTypeMerge cloudConfigType = "merge"
|
|
)
|
|
|
|
// InitializeCloudFromSecret initializes Azure cloud provider from Kubernetes secret.
|
|
func (az *Cloud) InitializeCloudFromSecret() {
|
|
config, err := az.getConfigFromSecret()
|
|
if err != nil {
|
|
klog.Warningf("Failed to get cloud-config from secret: %v, skip initializing from secret", err)
|
|
return
|
|
}
|
|
|
|
if config == nil {
|
|
// Skip re-initialization if the config is not override.
|
|
return
|
|
}
|
|
|
|
if err := az.InitializeCloudFromConfig(config, true); err != nil {
|
|
klog.Errorf("Failed to initialize Azure cloud provider: %v", err)
|
|
}
|
|
}
|
|
|
|
func (az *Cloud) getConfigFromSecret() (*Config, error) {
|
|
// Read config from file and no override, return nil.
|
|
if az.Config.CloudConfigType == cloudConfigTypeFile {
|
|
return nil, nil
|
|
}
|
|
|
|
secret, err := az.kubeClient.CoreV1().Secrets(cloudConfigNamespace).Get(cloudConfigSecretName, metav1.GetOptions{})
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to get secret %s: %v", cloudConfigSecretName, err)
|
|
}
|
|
|
|
cloudConfigData, ok := secret.Data[cloudConfigKey]
|
|
if !ok {
|
|
return nil, fmt.Errorf("cloud-config is not set in the secret (%s)", cloudConfigSecretName)
|
|
}
|
|
|
|
config := Config{}
|
|
if az.Config.CloudConfigType == "" || az.Config.CloudConfigType == cloudConfigTypeMerge {
|
|
// Merge cloud config, set default value to existing config.
|
|
config = az.Config
|
|
}
|
|
|
|
err = yaml.Unmarshal(cloudConfigData, &config)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to parse Azure cloud-config: %v", err)
|
|
}
|
|
|
|
return &config, nil
|
|
}
|