backup: change deployment update strategy to Recreate

CHANGELOG.md

@@ -6,10 +6,14 @@
 
 ### Changed
 
+- Backup sidecar deployment created with `Recreate` strategy.
+
 ### Removed
 
 ### Fixed
 
+- [GH-1068] Backup sidecar deployment stuck at upgrading
+
 ### Deprecated
 
 ### Security

pkg/util/k8sutil/backup.go

@@ -213,6 +213,9 @@ func NewBackupDeploymentManifest(name string, dplSel map[string]string, pl v1.Po
 		Spec: appsv1beta1.DeploymentSpec{
 			Selector: &metav1.LabelSelector{MatchLabels: pl.ObjectMeta.Labels},
 			Template: pl,
+			Strategy: appsv1beta1.DeploymentStrategy{
+				Type: appsv1beta1.RecreateDeploymentStrategyType,
+			},
 		},
 	}
 	addOwnerRefToObject(d.GetObjectMeta(), owner)