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main.go
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main.go
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/*
Copyright 2019 The Kubernetes 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"
"os"
"time"
"k8s.io/apimachinery/pkg/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/klog"
"k8s.io/klog/klogr"
bootstrapv1 "sigs.k8s.io/cluster-api-bootstrap-provider-kubeadm/api/v1alpha2"
"sigs.k8s.io/cluster-api-bootstrap-provider-kubeadm/controllers"
"sigs.k8s.io/cluster-api-bootstrap-provider-kubeadm/internal/locking"
clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha2"
ctrl "sigs.k8s.io/controller-runtime"
// +kubebuilder:scaffold:imports
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = bootstrapv1.AddToScheme(scheme)
_ = clusterv1.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
func main() {
klog.InitFlags(nil)
var (
metricsAddr string
enableLeaderElection bool
syncPeriod time.Duration
watchNamespace string
)
flag.StringVar(
&metricsAddr,
"metrics-addr",
":8080",
"The address the metric endpoint binds to.",
)
flag.BoolVar(
&enableLeaderElection,
"enable-leader-election",
false,
"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.",
)
flag.DurationVar(
&syncPeriod,
"sync-period",
10*time.Minute,
"The minimum interval at which watched resources are reconciled (e.g. 10m)",
)
flag.StringVar(
&watchNamespace,
"namespace",
"",
"Namespace that the controller watches to reconcile cluster-api objects. If unspecified, the controller watches for cluster-api objects across all namespaces.",
)
flag.Parse()
ctrl.SetLogger(klogr.New())
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
LeaderElection: enableLeaderElection,
Namespace: watchNamespace,
SyncPeriod: &syncPeriod,
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
if err := (&controllers.KubeadmConfigReconciler{
Client: mgr.GetClient(),
SecretsClientFactory: controllers.ClusterSecretsClientFactory{},
Log: ctrl.Log.WithName("KubeadmConfigReconciler"),
KubeadmInitLock: locking.NewControlPlaneInitMutex(ctrl.Log.WithName("init-locker"), mgr.GetClient()),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "KubeadmConfigReconciler")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}