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Cherrypick #1051[Fix kube-config for CRD informers] into release-1.8 #1052

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merged 1 commit into from
Mar 13, 2020
Merged

Cherrypick #1051[Fix kube-config for CRD informers] into release-1.8 #1052

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10 changes: 6 additions & 4 deletions cmd/glbc/app/clients.go
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Original file line number Diff line number Diff line change
Expand Up @@ -44,9 +44,10 @@ const (
cloudClientRetryInterval = 10 * time.Second
)

// NewKubeConfig returns a Kubernetes client config given the command line settings.
func NewKubeConfig() (*rest.Config, error) {
config, err := newKubeConfig()
// NewKubeConfigForProtobuf returns a Kubernetes client config that uses protobufs
// for given the command line settings.
func NewKubeConfigForProtobuf() (*rest.Config, error) {
config, err := NewKubeConfig()
if err != nil {
return nil, err
}
Expand All @@ -55,7 +56,8 @@ func NewKubeConfig() (*rest.Config, error) {
return config, nil
}

func newKubeConfig() (*rest.Config, error) {
// NewKubeConfig returns a Kubernetes client config given the command line settings.
func NewKubeConfig() (*rest.Config, error) {
if flags.F.InCluster {
klog.V(0).Infof("Using in cluster configuration")
return rest.InClusterConfig()
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16 changes: 12 additions & 4 deletions cmd/glbc/main.go
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Expand Up @@ -70,22 +70,30 @@ func main() {

klog.V(2).Infof("Flags = %+v", flags.F)
defer klog.Flush()
kubeConfig, err := app.NewKubeConfig()
// Create kube-config that uses protobufs to communicate with API server.
kubeConfigForProtobuf, err := app.NewKubeConfigForProtobuf()
if err != nil {
klog.Fatalf("Failed to create kubernetes client config: %v", err)
klog.Fatalf("Failed to create kubernetes client config for protobuf: %v", err)
}

kubeClient, err := kubernetes.NewForConfig(kubeConfig)
kubeClient, err := kubernetes.NewForConfig(kubeConfigForProtobuf)
if err != nil {
klog.Fatalf("Failed to create kubernetes client: %v", err)
}

// Due to scaling issues, leader election must be configured with a separate k8s client.
leaderElectKubeClient, err := kubernetes.NewForConfig(restclient.AddUserAgent(kubeConfig, "leader-election"))
leaderElectKubeClient, err := kubernetes.NewForConfig(restclient.AddUserAgent(kubeConfigForProtobuf, "leader-election"))
if err != nil {
klog.Fatalf("Failed to create kubernetes client for leader election: %v", err)
}

// Create kube-config for CRDs.
// TODO(smatti): Migrate to use protobuf once CRD supports.
kubeConfig, err := app.NewKubeConfig()
if err != nil {
klog.Fatalf("Failed to create kubernetes client config: %v", err)
}

var backendConfigClient backendconfigclient.Interface
crdClient, err := crdclient.NewForConfig(kubeConfig)
if err != nil {
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3 changes: 3 additions & 0 deletions pkg/controller/controller.go
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Expand Up @@ -204,18 +204,21 @@ func NewLoadBalancerController(
// BackendConfig event handlers.
ctx.BackendConfigInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
klog.V(3).Infof("obj(type %T) added", obj)
beConfig := obj.(*backendconfigv1beta1.BackendConfig)
ings := operator.Ingresses(ctx.Ingresses().List()).ReferencesBackendConfig(beConfig, operator.Services(ctx.Services().List())).AsList()
lbc.ingQueue.Enqueue(convert(ings)...)
},
UpdateFunc: func(old, cur interface{}) {
if !reflect.DeepEqual(old, cur) {
klog.V(3).Infof("obj(type %T) updated", cur)
beConfig := cur.(*backendconfigv1beta1.BackendConfig)
ings := operator.Ingresses(ctx.Ingresses().List()).ReferencesBackendConfig(beConfig, operator.Services(ctx.Services().List())).AsList()
lbc.ingQueue.Enqueue(convert(ings)...)
}
},
DeleteFunc: func(obj interface{}) {
klog.V(3).Infof("obj(type %T) deleted", obj)
var beConfig *backendconfigv1beta1.BackendConfig
var ok, beOk bool
beConfig, ok = obj.(*backendconfigv1beta1.BackendConfig)
Expand Down