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main.go
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main.go
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/*
Copyright (c) 2018-2022 Splunk Inc. All rights reserved.
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"
// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
// to ensure that exec-entrypoint and run can make use of them.
_ "k8s.io/client-go/plugin/pkg/client/auth/azure"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
"go.uber.org/zap/zapcore"
"k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/healthz"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
"sigs.k8s.io/controller-runtime/pkg/manager"
enterpriseApiV3 "github.com/splunk/splunk-operator/api/v3"
enterpriseApi "github.com/splunk/splunk-operator/api/v4"
"github.com/splunk/splunk-operator/controllers"
debug "github.com/splunk/splunk-operator/controllers/debug"
"github.com/splunk/splunk-operator/pkg/config"
//+kubebuilder:scaffold:imports
//extapi "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(enterpriseApi.AddToScheme(scheme))
utilruntime.Must(enterpriseApiV3.AddToScheme(scheme))
//+kubebuilder:scaffold:scheme
//utilruntime.Must(extapi.AddToScheme(scheme))
}
func main() {
var metricsAddr string
var enableLeaderElection bool
var probeAddr string
var pprofActive bool
var logEncoder string
var logLevel int
var leaseDuration time.Duration
var renewDeadline time.Duration
var leaseDurationSecond int
var renewDeadlineSecond int
flag.StringVar(&logEncoder, "log-encoder", "json", "log encoding ('json' or 'console')")
flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
flag.BoolVar(&enableLeaderElection, "leader-elect", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
flag.BoolVar(&pprofActive, "pprof", true, "Enable pprof endpoint")
flag.IntVar(&logLevel, "log-level", int(zapcore.InfoLevel), "set log level")
flag.IntVar(&leaseDurationSecond, "lease-duration", int(leaseDurationSecond), "manager lease duration in seconds")
flag.IntVar(&renewDeadlineSecond, "renew-duration", int(renewDeadlineSecond), "manager renew duration in seconds")
// see https://github.com/operator-framework/operator-sdk/issues/1813
if leaseDurationSecond < 30 {
leaseDuration = 30 * time.Second
} else {
leaseDuration = time.Duration(leaseDurationSecond) * time.Second
}
if renewDeadlineSecond < 20 {
renewDeadline = 20 * time.Second
} else {
renewDeadline = time.Duration(renewDeadlineSecond) * time.Second
}
opts := zap.Options{
Development: true,
TimeEncoder: zapcore.RFC3339NanoTimeEncoder,
}
opts.BindFlags(flag.CommandLine)
flag.Parse()
// Logging setup
ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
options := ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
Port: 9443,
HealthProbeBindAddress: probeAddr,
LeaderElection: enableLeaderElection,
LeaderElectionID: "270bec8c.splunk.com",
LeaseDuration: &leaseDuration,
RenewDeadline: &renewDeadline,
}
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), config.ManagerOptionsWithNamespaces(setupLog, options))
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
if err = (&controllers.ClusterMasterReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "ClusterMaster")
os.Exit(1)
}
if err = (&controllers.ClusterManagerReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "ClusterManager")
os.Exit(1)
}
if err = (&controllers.IndexerClusterReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "IndexerCluster")
os.Exit(1)
}
if err = (&controllers.LicenseMasterReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "LicenseMaster")
os.Exit(1)
}
if err = (&controllers.LicenseManagerReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "LicenseManager")
os.Exit(1)
}
if err = (&controllers.MonitoringConsoleReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "MonitoringConsole")
os.Exit(1)
}
if err = (&controllers.SearchHeadClusterReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "SearchHeadCluster")
os.Exit(1)
}
if err = (&controllers.StandaloneReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "Standalone")
os.Exit(1)
}
//+kubebuilder:scaffold:builder
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to set up health check")
os.Exit(1)
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to set up ready check")
os.Exit(1)
}
if err := customSetupEndpoints(pprofActive, mgr); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}
// Note that these endpoints meant to be sensitive and shouldn't be exposed publicly.
func customSetupEndpoints(pprofActive bool, mgr manager.Manager) error {
if pprofActive {
if err := debug.RegisterEndpoint(mgr.AddMetricsExtraHandler, nil); err != nil {
setupLog.Error(err, "Unable to register pprof endpoint")
return err
}
}
return nil
}