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Enabled autoscaling API group in apiserver

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This commit is contained in:
Piotr Szczesniak 2016-02-15 15:00:40 +01:00
parent 74400c33ae
commit 264c64ec0d
2 changed files with 111 additions and 3 deletions
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41
cmd/kube-apiserver/app/server.go
View File

@ -37,6 +37,7 @@ import (
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apimachinery/registered"
"k8s.io/kubernetes/pkg/apis/autoscaling"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apiserver"
"k8s.io/kubernetes/pkg/apiserver/authenticator"
@ -299,6 +300,37 @@ func Run(s *options.APIServer) error {
glog.Fatalf("Invalid extensions storage version or misconfigured etcd: %v", err)
}
storageDestinations.AddAPIGroup(extensions.GroupName, expEtcdStorage)
// Since HPA has been moved to the autoscaling group, we need to make
// sure autoscaling has a storage destination. If the autoscaling group
// itself is on, it will overwrite this decision below.
storageDestinations.AddAPIGroup(autoscaling.GroupName, expEtcdStorage)
}
// autoscaling/v1/horizontalpodautoscalers is a move from extensions/v1beta1/horizontalpodautoscalers.
// The storage version needs to be either extensions/v1beta1 or autoscaling/v1.
// Users must roll forward while using 1.2, because we will require the latter for 1.3.
if !apiGroupVersionOverrides["autoscaling/v1"].Disable {
glog.Infof("Configuring autoscaling/v1 storage destination")
autoscalingGroup, err := registered.Group(autoscaling.GroupName)
if err != nil {
glog.Fatalf("Autoscaling API is enabled in runtime config, but not enabled in the environment variable KUBE_API_VERSIONS. Error: %v", err)
}
// Figure out what storage group/version we should use.
storageGroupVersion, found := storageVersions[autoscalingGroup.GroupVersion.Group]
if !found {
glog.Fatalf("Couldn't find the storage version for group: %q in storageVersions: %v", autoscalingGroup.GroupVersion.Group, storageVersions)
}
if storageGroupVersion != "autoscaling/v1" && storageGroupVersion != "extensions/v1beta1" {
glog.Fatalf("The storage version for autoscaling must be either 'autoscaling/v1' or 'extensions/v1beta1'")
}
glog.Infof("Using %v for autoscaling group storage version", storageGroupVersion)
autoscalingEtcdStorage, err := newEtcd(s.EtcdServerList, api.Codecs, storageGroupVersion, "extensions/__internal", s.EtcdPathPrefix, s.EtcdQuorumRead)
if err != nil {
glog.Fatalf("Invalid extensions storage version or misconfigured etcd: %v", err)
}
storageDestinations.AddAPIGroup(autoscaling.GroupName, autoscalingEtcdStorage)
}
updateEtcdOverrides(s.EtcdServersOverrides, storageVersions, s.EtcdPathPrefix, s.EtcdQuorumRead, &storageDestinations, newEtcd)
@ -480,6 +512,15 @@ func parseRuntimeConfig(s *options.APIServer) (map[string]genericapiserver.APIGr
}
}
disableAutoscaling := disableAllAPIs
autoscalingGroupVersion := "autoscaling/v1"
disableAutoscaling = !getRuntimeConfigValue(s, autoscalingGroupVersion, !disableAutoscaling)
if disableAutoscaling {
apiGroupVersionOverrides[autoscalingGroupVersion] = genericapiserver.APIGroupVersionOverride{
Disable: true,
}
}
for key := range s.RuntimeConfig {
if strings.HasPrefix(key, v1GroupVersion+"/") {
return nil, fmt.Errorf("api/v1 resources cannot be enabled/disabled individually")

73
pkg/master/master.go
View File

@ -31,6 +31,7 @@ import (
"k8s.io/kubernetes/pkg/api/rest"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apimachinery/registered"
"k8s.io/kubernetes/pkg/apis/autoscaling"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apiserver"
apiservermetrics "k8s.io/kubernetes/pkg/apiserver/metrics"
@ -209,6 +210,7 @@ func (m *Master) InstallAPIs(c *Config) {
// allGroups records all supported groups at /apis
allGroups := []unversioned.APIGroup{}
// Install extensions unless disabled.
if !m.ApiGroupVersionOverrides["extensions/v1beta1"].Disable {
m.thirdPartyStorage = c.StorageDestinations.APIGroups[extensions.GroupName].Default
@ -250,6 +252,39 @@ func (m *Master) InstallAPIs(c *Config) {
}
allGroups = append(allGroups, group)
}
// Install autoscaling unless disabled.
if !m.ApiGroupVersionOverrides["autoscaling/v1"].Disable {
autoscalingResources := m.getAutoscalingResources(c)
autoscalingGroupMeta := registered.GroupOrDie(autoscaling.GroupName)
// Hard code preferred group version to autoscaling/v1
autoscalingGroupMeta.GroupVersion = unversioned.GroupVersion{Group: "autoscaling", Version: "v1"}
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *autoscalingGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1": autoscalingResources,
},
OptionsExternalVersion: &registered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
autoscalingGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: autoscalingGroupMeta.GroupVersion.String(),
Version: autoscalingGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: autoscalingGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{autoscalingGVForDiscovery},
PreferredVersion: autoscalingGVForDiscovery,
}
allGroups = append(allGroups, group)
}
if err := m.InstallAPIGroups(apiGroupsInfo); err != nil {
glog.Fatalf("Error in registering group versions: %v", err)
}
@ -586,9 +621,7 @@ func (m *Master) getExtensionResources(c *Config) map[string]rest.Storage {
storage := map[string]rest.Storage{}
if isEnabled("horizontalpodautoscalers") {
autoscalerStorage, autoscalerStatusStorage := horizontalpodautoscaleretcd.NewREST(dbClient("horizontalpodautoscalers"), storageDecorator)
storage["horizontalpodautoscalers"] = autoscalerStorage
storage["horizontalpodautoscalers/status"] = autoscalerStatusStorage
m.constructHPAResources(c, storage)
controllerStorage := expcontrolleretcd.NewStorage(c.StorageDestinations.Get("", "replicationControllers"), storageDecorator)
storage["replicationcontrollers"] = controllerStorage.ReplicationController
storage["replicationcontrollers/scale"] = controllerStorage.Scale
@ -646,6 +679,40 @@ func (m *Master) getExtensionResources(c *Config) map[string]rest.Storage {
return storage
}
// constructHPAResources makes HPA resources and adds them to the storage map.
// They're installed in both autoscaling and extensions. It's assumed that
// you've already done the check that they should be on.
func (m *Master) constructHPAResources(c *Config, restStorage map[string]rest.Storage) {
// Note that hpa's storage settings are changed by changing the autoscaling
// group. Clearly we want all hpas to be stored in the same place no
// matter where they're accessed from.
storageDecorator := m.StorageDecorator()
dbClient := func(resource string) storage.Interface {
return c.StorageDestinations.Search([]string{autoscaling.GroupName, extensions.GroupName}, resource)
}
autoscalerStorage, autoscalerStatusStorage := horizontalpodautoscaleretcd.NewREST(dbClient("horizontalpodautoscalers"), storageDecorator)
restStorage["horizontalpodautoscalers"] = autoscalerStorage
restStorage["horizontalpodautoscalers/status"] = autoscalerStatusStorage
}
// getAutoscalingResources returns the resources for autoscaling api
func (m *Master) getAutoscalingResources(c *Config) map[string]rest.Storage {
resourceOverrides := m.ApiGroupVersionOverrides["autoscaling/v1"].ResourceOverrides
isEnabled := func(resource string) bool {
// Check if the resource has been overriden.
if enabled, ok := resourceOverrides[resource]; ok {
return enabled
}
return !m.ApiGroupVersionOverrides["autoscaling/v1"].Disable
}
storage := map[string]rest.Storage{}
if isEnabled("horizontalpodautoscalers") {
m.constructHPAResources(c, storage)
}
return storage
}
// findExternalAddress returns ExternalIP of provided node with fallback to LegacyHostIP.
func findExternalAddress(node *api.Node) (string, error) {
var fallback string