/
starter.go
256 lines (234 loc) · 8.67 KB
/
starter.go
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package operator
import (
"bytes"
"context"
"os"
"time"
"github.com/openshift/csi-driver-manila-operator/assets"
"github.com/openshift/csi-driver-manila-operator/pkg/controllers/manila"
"github.com/openshift/csi-driver-manila-operator/pkg/controllers/secret"
"github.com/openshift/csi-driver-manila-operator/pkg/util"
"github.com/openshift/library-go/pkg/operator/resourcesynccontroller"
apiextclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/dynamic"
kubeclient "k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/klog/v2"
operatorapi "github.com/openshift/api/operator/v1"
configclient "github.com/openshift/client-go/config/clientset/versioned"
configinformers "github.com/openshift/client-go/config/informers/externalversions"
"github.com/openshift/library-go/pkg/controller/controllercmd"
"github.com/openshift/library-go/pkg/controller/factory"
csicontrollerset "github.com/openshift/library-go/pkg/operator/csi/csicontrollerset"
"github.com/openshift/library-go/pkg/operator/csi/csidrivercontrollerservicecontroller"
"github.com/openshift/library-go/pkg/operator/csi/csidrivernodeservicecontroller"
goc "github.com/openshift/library-go/pkg/operator/genericoperatorclient"
"github.com/openshift/library-go/pkg/operator/v1helpers"
)
const (
operandName = "manila-csi-driver"
operatorName = "manila-csi-driver-operator"
metricsCertSecretName = "manila-csi-driver-controller-metrics-serving-cert"
trustedCAConfigMap = "manila-csi-driver-trusted-ca-bundle"
nfsImageEnvName = "NFS_DRIVER_IMAGE"
resync = 20 * time.Minute
)
func RunOperator(ctx context.Context, controllerConfig *controllercmd.ControllerContext) error {
kubeClient := kubeclient.NewForConfigOrDie(rest.AddUserAgent(controllerConfig.KubeConfig, operatorName))
kubeInformersForNamespaces := v1helpers.NewKubeInformersForNamespaces(kubeClient, util.OperatorNamespace, util.OperandNamespace, util.CloudConfigNamespace, "")
secretInformer := kubeInformersForNamespaces.InformersFor(util.OperandNamespace).Core().V1().Secrets()
configMapInformer := kubeInformersForNamespaces.InformersFor(util.OperandNamespace).Core().V1().ConfigMaps()
nodeInformer := kubeInformersForNamespaces.InformersFor("").Core().V1().Nodes()
// Create apiextension client. This is used to verify is a VolumeSnapshotClass CRD exists.
apiExtClient, err := apiextclient.NewForConfig(rest.AddUserAgent(controllerConfig.KubeConfig, operatorName))
if err != nil {
return err
}
configClient := configclient.NewForConfigOrDie(rest.AddUserAgent(controllerConfig.KubeConfig, operatorName))
configInformers := configinformers.NewSharedInformerFactory(configClient, resync)
// Create GenericOperatorclient. This is used by controllers created down below
gvr := operatorapi.SchemeGroupVersion.WithResource("clustercsidrivers")
operatorClient, dynamicInformers, err := goc.NewClusterScopedOperatorClientWithConfigName(controllerConfig.KubeConfig, gvr, string(operatorapi.ManilaCSIDriver))
if err != nil {
return err
}
dynamicClient, err := dynamic.NewForConfig(controllerConfig.KubeConfig)
if err != nil {
return err
}
csiDriverControllerSet := csicontrollerset.NewCSIControllerSet(
operatorClient,
controllerConfig.EventRecorder,
).WithLogLevelController().WithManagementStateController(
operandName,
false,
).WithStaticResourcesController(
"ManilaDriverStaticResources",
kubeClient,
dynamicClient,
kubeInformersForNamespaces,
assets.ReadFile,
[]string{
// Create RBAC before creating Service Accounts.
// This prevents a race where the controller/node can
// try to create pods before the RBAC has been loaded,
// leading to an initial admission failure. We avoid
// this by exploiting the fact that the pods cannot be
// scheduled until the SA has been created.
"rbac/main_snapshotter_binding.yaml",
"rbac/main_provisioner_binding.yaml",
"rbac/volumeattachment_reader_provisioner_binding.yaml",
"rbac/privileged_role.yaml",
"rbac/controller_privileged_binding.yaml",
"rbac/node_privileged_binding.yaml",
"rbac/kube_rbac_proxy_role.yaml",
"rbac/kube_rbac_proxy_binding.yaml",
"rbac/prometheus_role.yaml",
"rbac/prometheus_rolebinding.yaml",
"rbac/lease_leader_election_role.yaml",
"rbac/lease_leader_election_rolebinding.yaml",
"controller_sa.yaml",
"controller_pdb.yaml",
"node_sa.yaml",
"service.yaml",
"cabundle_cm.yaml",
},
).WithConditionalStaticResourcesController(
"ManilaDriverConditionalStaticResourcesController",
kubeClient,
dynamicClient,
kubeInformersForNamespaces,
assets.ReadFile,
[]string{
"volumesnapshotclass.yaml",
},
// Only install when CRD exists.
func() bool {
name := "volumesnapshotclasses.snapshot.storage.k8s.io"
_, err := apiExtClient.ApiextensionsV1().CustomResourceDefinitions().Get(context.TODO(), name, metav1.GetOptions{})
return err == nil
},
// Don't ever remove.
func() bool {
return false
},
).WithCSIConfigObserverController(
"ManilaDriverCSIConfigObserverController",
configInformers,
).WithCSIDriverControllerService(
"ManilaDriverControllerServiceController",
assetWithNFSDriver,
"controller.yaml",
kubeClient,
kubeInformersForNamespaces.InformersFor(util.OperandNamespace),
configInformers,
[]factory.Informer{
nodeInformer.Informer(),
secretInformer.Informer(),
configMapInformer.Informer()},
csidrivercontrollerservicecontroller.WithObservedProxyDeploymentHook(),
csidrivercontrollerservicecontroller.WithCABundleDeploymentHook(
util.OperandNamespace,
trustedCAConfigMap,
configMapInformer,
),
csidrivercontrollerservicecontroller.WithSecretHashAnnotationHook(
util.OperandNamespace,
metricsCertSecretName,
secretInformer,
),
csidrivercontrollerservicecontroller.WithReplicasHook(nodeInformer.Lister()),
).WithCSIDriverNodeService(
"ManilaDriverNodeServiceController",
assetWithNFSDriver,
"node.yaml",
kubeClient,
kubeInformersForNamespaces.InformersFor(util.OperandNamespace),
nil,
csidrivernodeservicecontroller.WithObservedProxyDaemonSetHook(),
csidrivernodeservicecontroller.WithCABundleDaemonSetHook(
util.OperandNamespace,
trustedCAConfigMap,
configMapInformer,
),
).WithServiceMonitorController(
"ManilaDriverServiceMonitorController",
dynamicClient,
assets.ReadFile,
"servicemonitor.yaml",
)
dsBytes, err := assetWithNFSDriver("node_nfs.yaml")
if err != nil {
return err
}
nfsCSIDriverController := csidrivernodeservicecontroller.NewCSIDriverNodeServiceController(
"NFSDriverNodeServiceController",
dsBytes,
controllerConfig.EventRecorder,
operatorClient,
kubeClient,
kubeInformersForNamespaces.InformersFor(util.OperandNamespace).Apps().V1().DaemonSets(),
[]factory.Informer{configMapInformer.Informer()},
)
// sync config map with OpenStack CA certificate to the operand namespace,
// so the driver can get it as a ConfigMap volume.
srcConfigMap := resourcesynccontroller.ResourceLocation{
Namespace: util.CloudConfigNamespace,
Name: util.CloudConfigName,
}
dstConfigMap := resourcesynccontroller.ResourceLocation{
Namespace: util.OperandNamespace,
Name: util.CloudConfigName,
}
certController := resourcesynccontroller.NewResourceSyncController(
operatorClient,
kubeInformersForNamespaces,
kubeClient.CoreV1(),
kubeClient.CoreV1(),
controllerConfig.EventRecorder)
if err := certController.SyncConfigMap(dstConfigMap, srcConfigMap); err != nil {
return err
}
secretSyncController := secret.NewSecretSyncController(
operatorClient,
kubeClient,
kubeInformersForNamespaces,
resync,
controllerConfig.EventRecorder)
manilaController := manila.NewManilaController(
operatorClient,
kubeClient,
kubeInformersForNamespaces,
[]manila.Runnable{
csiDriverControllerSet,
nfsCSIDriverController,
secretSyncController,
certController,
},
controllerConfig.EventRecorder,
)
klog.Info("Starting the informers")
go kubeInformersForNamespaces.Start(ctx.Done())
go dynamicInformers.Start(ctx.Done())
go configInformers.Start(ctx.Done())
klog.Info("Starting controllers")
go manilaController.Run(ctx, 1)
<-ctx.Done()
return nil
}
// CSIDriverController can replace only a single driver in driver manifests.
// Manila needs to replace two of them: Manila driver and NFS driver image.
// Let the Manila image be replaced by CSIDriverController and NFS in this
// custom asset loading func.
func assetWithNFSDriver(file string) ([]byte, error) {
asset, err := assets.ReadFile(file)
if err != nil {
return nil, err
}
nfsImage := os.Getenv(nfsImageEnvName)
if nfsImage == "" {
return asset, nil
}
return bytes.ReplaceAll(asset, []byte("${NFS_DRIVER_IMAGE}"), []byte(nfsImage)), nil
}