Configure zap logger for klog (#102)

go.mod

@@ -21,5 +21,6 @@ require (
 	k8s.io/api v0.20.2
 	k8s.io/apimachinery v0.20.2
 	k8s.io/client-go v0.20.2
+	k8s.io/klog/v2 v2.4.0
 	sigs.k8s.io/controller-runtime v0.8.3
 )

main.go

@@ -40,6 +40,7 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/klog/v2"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
@@ -188,7 +189,10 @@ func main() {
 	encoderOpts := func(o *zap.Options) {
 		o.EncoderConfigOptions = append(o.EncoderConfigOptions, f)
 	}
-	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&loggerOpts), zap.StacktraceLevel(zapcore.PanicLevel), encoderOpts))
+
+	zapLogger := zap.New(zap.UseFlagOptions(&loggerOpts), zap.StacktraceLevel(zapcore.PanicLevel), encoderOpts)
+	ctrl.SetLogger(zapLogger)
+	klog.SetLogger(zapLogger)
 
 	// Setup telemetry.
 	telemetryShutdown, err := export.InstallJaegerExporter("api-manager")

vendor/modules.txt

@@ -558,6 +558,7 @@ k8s.io/client-go/util/workqueue
 k8s.io/component-base/config
 k8s.io/component-base/config/v1alpha1
 # k8s.io/klog/v2 v2.4.0
+## explicit
 k8s.io/klog/v2
 # k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd
 k8s.io/kube-openapi/pkg/util/proto