monitoring: enable exporter for downstream 4.14

All regression for ceph-exporter are fixed in downstream Ceph v6.1z2,
so enabling the exporter again.

(cherry picked from commit c5e35cd)

Signed-off-by: sp98 <[email protected]>

Author: avanthakkar

pkg/operator/ceph/cluster/nodedaemon/exporter.go

@@ -51,13 +51,11 @@ const (
 )
 
 var (
-	MinVersionForCephExporter = cephver.CephVersion{Major: 18, Minor: 0, Extra: 0}
+	MinVersionForCephExporter = cephver.CephVersion{Major: 17, Minor: 2, Extra: 6}
 )
 
 // createOrUpdateCephExporter is a wrapper around controllerutil.CreateOrUpdate
 func (r *ReconcileNode) createOrUpdateCephExporter(node corev1.Node, tolerations []corev1.Toleration, cephCluster cephv1.CephCluster, cephVersion *cephver.CephVersion) (controllerutil.OperationResult, error) {
-	// CephVersion change is done temporarily, as some regression was detected in Ceph version 17.2.6 which is summarised here https://github.com/ceph/ceph/pull/50718#issuecomment-1505608312.
-	// Thus, disabling ceph-exporter for now until all the regression are fixed.
 	if !cephVersion.IsAtLeast(MinVersionForCephExporter) {
 		logger.Infof("Skipping exporter reconcile on ceph version %q", cephVersion.String())
 		return controllerutil.OperationResultNone, nil

pkg/operator/ceph/cluster/nodedaemon/exporter_test.go

@@ -68,7 +68,7 @@ func TestCreateOrUpdateCephExporter(t *testing.T) {
 	}
 	cephCluster.Spec.Labels = cephv1.LabelsSpec{}
 	cephCluster.Spec.PriorityClassNames = cephv1.PriorityClassNamesSpec{}
-	cephVersion := &cephver.CephVersion{Major: 18, Minor: 0, Extra: 0}
+	cephVersion := &cephver.CephVersion{Major: 17, Minor: 2, Extra: 6}
 	ctx := context.TODO()
 	context := &clusterd.Context{
 		Clientset:     test.New(t, 1),

pkg/operator/ceph/cluster/nodedaemon/reconcile.go

@@ -257,8 +257,6 @@ func (r *ReconcileNode) createOrUpdateNodeDaemons(node corev1.Node, tolerations
 				return errors.Wrapf(err, "ceph exporter reconcile failed on op %q", op)
 			}
 		} else {
-			// CephVersion change is done temporarily, as some regression was detected in Ceph version 17.2.6 which is summarised here https://github.com/ceph/ceph/pull/50718#issuecomment-1505608312.
-			// Thus, disabling ceph-exporter for now until all the regression are fixed.
 			if cephVersion.IsAtLeast(MinVersionForCephExporter) {
 				logger.Debugf("ceph exporter successfully reconciled for node %q. operation: %q", node.Name, op)
 				// create the metrics service