kruise/main.go

157 lines
4.7 KiB
Go

/*
Copyright 2020 The Kruise Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"flag"
"net/http"
_ "net/http/pprof"
"os"
extclient "github.com/openkruise/kruise/pkg/client"
"github.com/openkruise/kruise/pkg/util/fieldindex"
"github.com/openkruise/kruise/pkg/webhook"
"k8s.io/apimachinery/pkg/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/client-go/rest"
"k8s.io/klog"
"k8s.io/klog/klogr"
ctrl "sigs.k8s.io/controller-runtime"
appsv1alpha1 "github.com/openkruise/kruise/apis/apps/v1alpha1"
"github.com/openkruise/kruise/pkg/controller"
// +kubebuilder:scaffold:imports
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
restConfigQPS = flag.Int("rest-config-qps", 30, "QPS of rest config.")
restConfigBurst = flag.Int("rest-config-burst", 50, "Burst of rest config.")
)
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = appsv1alpha1.AddToScheme(clientgoscheme.Scheme)
_ = appsv1alpha1.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
func main() {
var metricsAddr, pprofAddr string
var healthProbeAddr string
var enableLeaderElection, enablePprof bool
var leaderElectionNamespace string
var namespace string
flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
flag.StringVar(&healthProbeAddr, "health-probe-addr", ":8000", "The address the healthz/readyz endpoint binds to.")
flag.BoolVar(&enableLeaderElection, "enable-leader-election", true, "Whether you need to enable leader election.")
flag.StringVar(&leaderElectionNamespace, "leader-election-namespace", "kruise-system",
"This determines the namespace in which the leader election configmap will be created, it will use in-cluster namespace if empty.")
flag.StringVar(&namespace, "namespace", "",
"Namespace if specified restricts the manager's cache to watch objects in the desired namespace. Defaults to all namespaces.")
flag.BoolVar(&enablePprof, "enable-pprof", false, "Enable pprof for controller manager.")
flag.StringVar(&pprofAddr, "pprof-addr", ":8090", "The address the pprof binds to.")
klog.InitFlags(nil)
flag.Parse()
if enablePprof {
go func() {
if err := http.ListenAndServe(pprofAddr, nil); err != nil {
setupLog.Error(err, "unable to start pprof")
}
}()
}
//ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
ctrl.SetLogger(klogr.New())
cfg := ctrl.GetConfigOrDie()
setRestConfig(cfg)
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
HealthProbeBindAddress: healthProbeAddr,
LeaderElection: enableLeaderElection,
LeaderElectionID: "kruise-manager",
LeaderElectionNamespace: leaderElectionNamespace,
Namespace: namespace,
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
setupLog.Info("register field index")
if err := fieldindex.RegisterFieldIndexes(mgr.GetCache()); err != nil {
setupLog.Error(err, "failed to register field index")
os.Exit(1)
}
setupLog.Info("new clientset registry")
err = extclient.NewRegistry(mgr)
if err != nil {
setupLog.Error(err, "unable to init kruise clientset and informer")
os.Exit(1)
}
setupLog.Info("setup controllers")
if err = controller.SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to setup controllers")
os.Exit(1)
}
setupLog.Info("setup webhook")
if err = webhook.SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to setup webhook")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
setupLog.Info("initialize webhook")
if err := webhook.Initialize(mgr); err != nil {
setupLog.Error(err, "unable to initialize webhook")
os.Exit(1)
}
if err := mgr.AddReadyzCheck("webhook-ready", webhook.Checker); err != nil {
setupLog.Error(err, "unable to add readyz check")
os.Exit(1)
}
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}
func setRestConfig(c *rest.Config) {
if *restConfigQPS > 0 {
c.QPS = float32(*restConfigQPS)
}
if *restConfigBurst > 0 {
c.Burst = *restConfigBurst
}
}