/
main.go
251 lines (217 loc) · 8.41 KB
/
main.go
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package main
import (
"context"
"flag"
"fmt"
"os"
"runtime"
"sigs.k8s.io/controller-runtime/pkg/cache"
"strings"
"time"
"github.com/openshift/cluster-logging-operator/internal/metrics/dashboard"
"github.com/openshift/cluster-logging-operator/internal/metrics/telemetry"
"k8s.io/apimachinery/pkg/api/errors"
"sigs.k8s.io/controller-runtime/pkg/client"
loggingv1 "github.com/openshift/cluster-logging-operator/api/logging/v1"
"github.com/openshift/cluster-logging-operator/api/logging/v1alpha1"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/healthz"
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
log "github.com/ViaQ/logerr/v2/log/static"
"github.com/openshift/cluster-logging-operator/api"
"github.com/openshift/cluster-logging-operator/internal/utils"
"github.com/openshift/cluster-logging-operator/version"
apiruntime "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"
"sigs.k8s.io/controller-runtime/pkg/manager/signals"
configv1 "github.com/openshift/api/config/v1"
consolev1 "github.com/openshift/api/console/v1"
consolev1alpha1 "github.com/openshift/api/console/v1alpha1"
oauth "github.com/openshift/api/oauth/v1"
routev1 "github.com/openshift/api/route/v1"
securityv1 "github.com/openshift/api/security/v1"
"github.com/openshift/cluster-logging-operator/internal/controller/clusterlogging"
"github.com/openshift/cluster-logging-operator/internal/controller/forwarding"
"github.com/openshift/cluster-logging-operator/internal/controller/logfilemetricsexporter"
loggingruntime "github.com/openshift/cluster-logging-operator/internal/runtime"
elasticsearch "github.com/openshift/elasticsearch-operator/apis/logging/v1"
monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
)
// Change below variables to serve metrics on different host or port.
var (
scheme = apiruntime.NewScheme()
)
const (
UnHealthyStatus = "0"
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(apis.AddToScheme(scheme))
utilruntime.Must(elasticsearch.AddToScheme(scheme))
utilruntime.Must(routev1.AddToScheme(scheme))
utilruntime.Must(consolev1.AddToScheme(scheme))
utilruntime.Must(consolev1alpha1.AddToScheme(scheme))
utilruntime.Must(oauth.AddToScheme(scheme))
utilruntime.Must(monitoringv1.AddToScheme(scheme))
utilruntime.Must(configv1.AddToScheme(scheme))
utilruntime.Must(securityv1.AddToScheme(scheme))
utilruntime.Must(loggingv1.AddToScheme(scheme))
utilruntime.Must(v1alpha1.AddToScheme(scheme))
//+kubebuilder:scaffold:scheme
}
func main() {
var metricsAddr string
var enableLeaderElection bool
var probeAddr string
flag.StringVar(&metricsAddr, "metrics-bind-address", ":8686", "The address the metric endpoint binds to.")
//flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe end point 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.Parse()
logger := utils.InitLogger("cluster-logging-operator")
// LOG-5136 Fixes error caused by updates to controller-runtime
ctrl.SetLogger(logger)
log.Info("starting up...",
"operator_version", version.Version,
"go_version", runtime.Version(),
"go_os", runtime.GOOS,
"go_arch", runtime.GOARCH,
)
// https://issues.redhat.com/browse/LOG-3321
cacheOptions := cache.Options{
SyncPeriod: utils.GetPtr(time.Minute * 3),
}
if watchNS := getWatchNS(); len(watchNS) > 0 {
cacheOptions.DefaultNamespaces = map[string]cache.Config{}
for _, ns := range watchNS {
cacheOptions.DefaultNamespaces[ns] = cache.Config{}
}
}
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
Metrics: metricsserver.Options{
BindAddress: metricsAddr,
},
HealthProbeBindAddress: probeAddr,
LeaderElection: enableLeaderElection,
LeaderElectionID: "b430cc2e.openshift.io",
Cache: cacheOptions,
})
if err != nil {
log.Error(err, "unable to start manager")
os.Exit(1)
}
// Clean up
defer func() {
if err := cleanUpResources(mgr.GetClient()); err != nil {
log.V(3).Error(err, "error with resource cleanup")
}
}()
clusterVersion, clusterID, err := version.ClusterVersion(mgr.GetAPIReader())
if err != nil {
log.Error(err, "unable to retrieve the cluster version")
os.Exit(1)
}
migrateManifestResources(mgr.GetClient())
log.Info("Registering Components.")
if err = (&clusterlogging.ReconcileClusterLogging{
Client: mgr.GetClient(),
Reader: mgr.GetAPIReader(),
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor("clusterlogging-controller"),
ClusterVersion: clusterVersion,
ClusterID: clusterID,
}).SetupWithManager(mgr); err != nil {
log.Error(err, "unable to create controller", "controller", "ClusterLogForwarder")
telemetry.Data.CLInfo.Set("healthStatus", UnHealthyStatus)
os.Exit(1)
}
if err = (&forwarding.ReconcileForwarder{
Client: mgr.GetClient(),
Reader: mgr.GetAPIReader(),
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor("clusterlogforwarder"),
ClusterVersion: clusterVersion,
ClusterID: clusterID,
}).SetupWithManager(mgr); err != nil {
log.Error(err, "unable to create controller", "controller", "ClusterLogging")
telemetry.Data.CLFInfo.Set("healthStatus", UnHealthyStatus)
os.Exit(1)
}
// The Log File Metric Exporter Controller
if err = (&logfilemetricsexporter.ReconcileLogFileMetricExporter{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor("logfilemetricexporter"),
ClusterVersion: clusterVersion,
ClusterID: clusterID,
}).SetupWithManager(mgr); err != nil {
log.Error(err, "unable to create controller", "controller", "LogFileMetricExporter")
telemetry.Data.LFMEInfo.Set(telemetry.HealthStatus, UnHealthyStatus)
os.Exit(1)
}
//+kubebuilder:scaffold:builder
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
log.Error(err, "unable to set up health check")
os.Exit(1)
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
log.Error(err, "unable to set up ready check")
os.Exit(1)
}
// updating clo Telemetry Data - to be published by prometheus
cloversion, err := version.OperatorVersion()
if err != nil {
cloversion = version.Version
log.Info("Failed to get clo version from env variable OPERATOR_CONDITION_NAME so falling back to default version")
}
telemetry.Data.CLInfo.Set("version", cloversion)
errr := telemetry.RegisterMetrics()
if errr != nil {
log.Error(err, "Error in registering clo metrics for telemetry")
}
// Create the dashboard
if err := initLoggingResources(mgr.GetClient(), mgr.GetAPIReader()); err != nil {
log.V(2).Error(err, "couldn't load all logging resources")
}
log.Info("Starting the Cmd.")
// Start the Cmd
if err := mgr.Start(signals.SetupSignalHandler()); err != nil {
log.Error(err, "Manager exited non-zero")
os.Exit(1)
}
}
// getWatchNS returns the namespaces being watched by the operator. Empty means all
// - https://sdk.operatorframework.io/docs/building-operators/golang/operator-scope/#configuring-namespace-scoped-operators
func getWatchNS() []string {
OpenshiftNSEnvVar := "WATCH_NAMESPACE"
ns, found := os.LookupEnv(OpenshiftNSEnvVar)
if !found {
log.Error(fmt.Errorf("Exiting. %s must be set", OpenshiftNSEnvVar), "Failed to get watch namespace")
os.Exit(1)
}
return strings.Split(ns, ",")
}
func migrateManifestResources(k8sClient client.Client) {
log.Info("migrating resources provided by the manifest")
if err := k8sClient.Delete(context.TODO(), loggingruntime.NewPriorityClass("cluster-logging", 0, false, "")); err != nil && !errors.IsNotFound(err) {
log.V(1).Error(err, "There was an error trying to remove the old collector PriorityClass named 'cluster-logging'")
}
}
func initLoggingResources(k8sClient client.Client, reader client.Reader) error {
// Create dashboard config map on CLO install
if err := dashboard.ReconcileDashboards(k8sClient, reader); err != nil {
return err
}
return nil
}
func cleanUpResources(k8sClient client.Client) error {
// Remove the dashboard config map
if err := dashboard.RemoveDashboardConfigMap(k8sClient); err != nil {
return err
}
return nil
}