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main.go
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main.go
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// Copyright (c) 2024 Aiven, Helsinki, Finland. https://aiven.io/
package main
import (
"flag"
"os"
"strings"
"k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/client-go/discovery"
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"
"github.com/aiven/aiven-operator/api/v1alpha1"
"github.com/aiven/aiven-operator/controllers"
//+kubebuilder:scaffold:imports
)
//go:generate go run ./generators/userconfigs/... --services mysql,cassandra,grafana,pg,kafka,redis,clickhouse,opensearch,kafka_connect
//go:generate go run ./generators/userconfigs/... --integrations clickhouse_kafka,clickhouse_postgresql,datadog,kafka_connect,kafka_logs,kafka_mirrormaker,logs,metrics,external_aws_cloudwatch_metrics
//go:generate go run ./generators/userconfigs/... --integration-endpoints datadog,external_aws_cloudwatch_logs,external_aws_cloudwatch_metrics,external_elasticsearch_logs,external_google_cloud_bigquery,external_google_cloud_logging,external_kafka,external_opensearch_logs,external_postgresql,external_schema_registry,jolokia,prometheus,rsyslog
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
// operatorVersion is the current version of the operator.
var operatorVersion = "dev"
const port = 9443
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(v1alpha1.AddToScheme(scheme))
}
func main() {
var metricsAddr string
var enableLeaderElection bool
var probeAddr string
var development bool
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(&development, "development", true, "Configures the logger to use a development config (stacktraces on warnings, no sampling)")
opts := zap.Options{
Development: development,
}
opts.BindFlags(flag.CommandLine)
flag.Parse()
ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
Port: port,
HealthProbeBindAddress: probeAddr,
LeaderElection: enableLeaderElection,
LeaderElectionID: "40db2fac.aiven.io",
// LeaderElectionReleaseOnCancel defines if the leader should step down voluntarily
// when the Manager ends. This requires the binary to immediately end when the
// Manager is stopped, otherwise, this setting is unsafe. Setting this significantly
// speeds up voluntary leader transitions as the new leader don't have to wait
// LeaseDuration time first.
//
// In the default scaffold provided, the program ends immediately after
// the manager stops, so would be fine to enable this option. However,
// if you are doing or is intended to do any operation such as perform cleanups
// after the manager stops then its usage might be unsafe.
// LeaderElectionReleaseOnCancel: true,
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
discoveryClient, err := discovery.NewDiscoveryClientForConfig(mgr.GetConfig())
if err != nil {
setupLog.Error(err, "unable to create discovery client")
os.Exit(1)
}
kubeVersion, err := discoveryClient.ServerVersion()
if err != nil {
setupLog.Error(err, "unable to get kube version")
os.Exit(1)
}
defaultToken := os.Getenv("DEFAULT_AIVEN_TOKEN")
err = controllers.SetupControllers(mgr, defaultToken, kubeVersion.String(), operatorVersion)
if err != nil {
setupLog.Error(err, "controllers setup error")
}
// Webhooks are enabled by default
switch strings.ToLower(os.Getenv("ENABLE_WEBHOOKS")) {
case "false", "0", "f":
default:
err = v1alpha1.SetupWebhooks(mgr)
if err != nil {
setupLog.Error(err, "unable to create webhook")
os.Exit(1)
}
}
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)
}
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}