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6acfb0f868
Automatic merge from submit-queue (batch tested with PRs 47038, 47105) extending DefaultExternalHost for any registred cloud provider **What this PR does / why we need it**: this PR enables DefaultExternalHost to work with any registered cloud provider. **Which issue this PR fixes** : fixes #46567 **Special notes for your reviewer**: **Release note**: ```release-note When determining the default external host of the kube apiserver, any configured cloud provider is now consulted ```
88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package options
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import (
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"fmt"
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"os"
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"github.com/spf13/pflag"
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"k8s.io/api/core/v1"
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genericoptions "k8s.io/apiserver/pkg/server/options"
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"k8s.io/kubernetes/pkg/cloudprovider"
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)
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type CloudProviderOptions struct {
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CloudConfigFile string
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CloudProvider string
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}
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func NewCloudProviderOptions() *CloudProviderOptions {
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return &CloudProviderOptions{}
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}
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func (s *CloudProviderOptions) Validate() []error {
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allErrors := []error{}
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return allErrors
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}
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func (s *CloudProviderOptions) AddFlags(fs *pflag.FlagSet) {
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fs.StringVar(&s.CloudProvider, "cloud-provider", s.CloudProvider,
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"The provider for cloud services. Empty string for no provider.")
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fs.StringVar(&s.CloudConfigFile, "cloud-config", s.CloudConfigFile,
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"The path to the cloud provider configuration file. Empty string for no configuration file.")
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}
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func (s *CloudProviderOptions) DefaultExternalHost(genericoptions *genericoptions.ServerRunOptions) error {
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if len(genericoptions.ExternalHost) != 0 {
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return nil
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}
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if cloudprovider.IsCloudProvider(s.CloudProvider) {
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cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
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if err != nil {
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return fmt.Errorf("%q cloud provider could not be initialized: %v", s.CloudProvider, err)
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}
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instances, supported := cloud.Instances()
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if !supported {
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return fmt.Errorf("%q cloud provider has no instances", s.CloudProvider)
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}
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hostname, err := os.Hostname()
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if err != nil {
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return fmt.Errorf("failed to get hostname: %v", err)
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}
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nodeName, err := instances.CurrentNodeName(hostname)
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if err != nil {
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return fmt.Errorf("failed to get NodeName from %q cloud provider: %v", s.CloudProvider, err)
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}
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addrs, err := instances.NodeAddresses(nodeName)
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if err != nil {
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return fmt.Errorf("failed to get external host address from %q cloud provider: %v", s.CloudProvider, err)
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} else {
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for _, addr := range addrs {
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if addr.Type == v1.NodeExternalIP {
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genericoptions.ExternalHost = addr.Address
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}
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}
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}
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}
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return nil
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}
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