6ae7201d74
Long term plan is to remove all uses of cloud provider from kube api server. As part of that, we need to remove the dependency on figuring out the host address of the node running the kube api server using the cloud provider. In this review, we log a warning that this feature that is usually used for example with swagger generation will go away in the future.
93 lines
2.8 KiB
Go
93 lines
2.8 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/golang/glog"
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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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glog.Info("--external-hostname was not specified. Trying to get it from the cloud provider.")
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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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glog.Warning("[Deprecated] Getting host address using cloud provider is " +
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"now deprecated. Please use --external-hostname explicitly")
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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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