func init() {
validGroupVersions := map[unversioned.GroupVersion]bool{
unversioned.GroupVersion{Group: "", Version: "v1"}: true,
unversioned.GroupVersion{Group: "extensions", Version: "v1beta1"}: true,
unversioned.GroupVersion{Group: "componentconfig", Version: "v1alpha1"}: true,
unversioned.GroupVersion{Group: "metrics", Version: "v1alpha1"}: true,
}
// The default list of supported api versions, in order of most preferred to the least.
supportedVersions := []unversioned.GroupVersion{
{Group: "", Version: "v1"},
{Group: "extensions", Version: "v1beta1"},
{Group: "componentconfig", Version: "v1alpha1"},
}
// Env var KUBE_API_VERSIONS is a comma separated list of API versions that should be registered in the scheme.
// The versions should be in the order of most preferred to the least.
userRequestedVersions := os.Getenv("KUBE_API_VERSIONS")
if len(userRequestedVersions) != 0 {
// reset the supported versions
supportedVersions = []unversioned.GroupVersion{}
for _, version := range strings.Split(userRequestedVersions, ",") {
gv, err := unversioned.ParseGroupVersion(version)
if err != nil {
glog.Fatalf("invalid api version: %s in KUBE_API_VERSIONS: %s. List of valid API versions: %v",
version, os.Getenv("KUBE_API_VERSIONS"), validGroupVersions)
}
// Verify that the version is valid.
valid, ok := validGroupVersions[gv]
if !ok || !valid {
// Not a valid API version.
glog.Fatalf("invalid api version: %s in KUBE_API_VERSIONS: %s. List of valid API versions: %v",
version, os.Getenv("KUBE_API_VERSIONS"), validGroupVersions)
}
supportedVersions = append(supportedVersions, gv)
}
}
RegisteredGroupVersions = supportedVersions
}
func GetHostname(hostnameOverride string) string {
hostname := hostnameOverride
if string(hostname) == "" {
nodename, err := exec.Command("uname", "-n").Output()
if err != nil {
glog.Fatalf("Couldn't determine hostname: %v", err)
}
hostname = string(nodename)
}
return strings.ToLower(strings.TrimSpace(hostname))
}