func (s *CloudProviderOptions) DefaultExternalHost(genericoptions *genericoptions.ServerRunOptions) error {
if len(genericoptions.ExternalHost) != 0 {
return nil
}
// TODO: extend for other providers
if s.CloudProvider == "gce" || s.CloudProvider == "aws" {
cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
if err != nil {
return fmt.Errorf("%q cloud provider could not be initialized: %v", s.CloudProvider, err)
}
instances, supported := cloud.Instances()
if !supported {
return fmt.Errorf("%q cloud provider has no instances", s.CloudProvider)
}
hostname, err := os.Hostname()
if err != nil {
return fmt.Errorf("failed to get hostname: %v", err)
}
nodeName, err := instances.CurrentNodeName(hostname)
if err != nil {
return fmt.Errorf("failed to get NodeName from %q cloud provider: %v", s.CloudProvider, err)
}
addrs, err := instances.NodeAddresses(nodeName)
if err != nil {
return fmt.Errorf("failed to get external host address from %q cloud provider: %v", s.CloudProvider, err)
} else {
for _, addr := range addrs {
if addr.Type == v1.NodeExternalIP {
genericoptions.ExternalHost = addr.Address
}
}
}
}
return nil
}
