diff --git a/examples/example-cluster.yaml b/examples/example-cluster.yaml
index 63a7e864d..89c89531b 100644
--- a/examples/example-cluster.yaml
+++ b/examples/example-cluster.yaml
@@ -26,10 +26,21 @@ spec:
 
   ## Specify additional pod specification
   # podSpec:
+  #   affinity:
+  #     podAntiAffinity:
+  #       preferredDuringSchedulingIgnoredDuringExecution:
+  #         weight: 100
+  #         podAffinityTerm:
+  #           topologyKey: "kubernetes.io/hostname"
+  #           labelSelector:
+  #             matchlabels: <cluster-labels>
   #   resources:
   #     requests:
   #       memory: 1G
   #       cpu:    200m
+  #   tolerations: []
+  #   priorityClassName:
+  #   serviceAccountName: default
 
   ## Specify additional volume specification
   # volumeSpec:
diff --git a/pkg/apis/mysql/v1alpha1/mysqlcluster_types.go b/pkg/apis/mysql/v1alpha1/mysqlcluster_types.go
index 91deb5824..4da7abde9 100644
--- a/pkg/apis/mysql/v1alpha1/mysqlcluster_types.go
+++ b/pkg/apis/mysql/v1alpha1/mysqlcluster_types.go
@@ -122,11 +122,14 @@ type PodSpec struct {
 	ImagePullPolicy  core.PullPolicy             `json:"imagePullPolicy,omitempty"`
 	ImagePullSecrets []core.LocalObjectReference `json:"imagePullSecrets,omitempty"`
 
-	Labels       map[string]string         `json:"labels,omitempty"`
-	Annotations  map[string]string         `json:"annotations,omitempty"`
-	Resources    core.ResourceRequirements `json:"resources,omitempty"`
-	Affinity     core.Affinity             `json:"affinity,omitempty"`
-	NodeSelector map[string]string         `json:"nodeSelector,omitempty"`
+	Labels             map[string]string         `json:"labels,omitempty"`
+	Annotations        map[string]string         `json:"annotations,omitempty"`
+	Resources          core.ResourceRequirements `json:"resources,omitempty"`
+	Affinity           *core.Affinity            `json:"affinity,omitempty"`
+	NodeSelector       map[string]string         `json:"nodeSelector,omitempty"`
+	PriorityClassName  string                    `json:"priorityClassName,omitempty"`
+	Tolerations        []core.Toleration         `json:"tolerations,omitempty"`
+	ServiceAccountName string                    `json:"serviceAccountName,omitempty"`
 }
 
 // VolumeSpec is the desired spec for storing mysql data. Only one of its
diff --git a/pkg/apis/mysql/v1alpha1/zz_generated.deepcopy.go b/pkg/apis/mysql/v1alpha1/zz_generated.deepcopy.go
index 933ec0ca5..a5f5e41e5 100644
--- a/pkg/apis/mysql/v1alpha1/zz_generated.deepcopy.go
+++ b/pkg/apis/mysql/v1alpha1/zz_generated.deepcopy.go
@@ -380,7 +380,11 @@ func (in *PodSpec) DeepCopyInto(out *PodSpec) {
 		}
 	}
 	in.Resources.DeepCopyInto(&out.Resources)
-	in.Affinity.DeepCopyInto(&out.Affinity)
+	if in.Affinity != nil {
+		in, out := &in.Affinity, &out.Affinity
+		*out = new(v1.Affinity)
+		(*in).DeepCopyInto(*out)
+	}
 	if in.NodeSelector != nil {
 		in, out := &in.NodeSelector, &out.NodeSelector
 		*out = make(map[string]string, len(*in))
@@ -388,6 +392,13 @@ func (in *PodSpec) DeepCopyInto(out *PodSpec) {
 			(*out)[key] = val
 		}
 	}
+	if in.Tolerations != nil {
+		in, out := &in.Tolerations, &out.Tolerations
+		*out = make([]v1.Toleration, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
 	return
 }
 
diff --git a/pkg/controller/mysqlcluster/internal/syncer/statefullset.go b/pkg/controller/mysqlcluster/internal/syncer/statefullset.go
index 564ddf85a..479474839 100644
--- a/pkg/controller/mysqlcluster/internal/syncer/statefullset.go
+++ b/pkg/controller/mysqlcluster/internal/syncer/statefullset.go
@@ -118,17 +118,20 @@ func (s *sfsSyncer) SyncFn(in runtime.Object) error {
 func (s *sfsSyncer) ensurePodSpec() core.PodSpec {
 	fsGroup := int64(999) // mysql user UID
 	return core.PodSpec{
-		InitContainers:   s.ensureInitContainersSpec(),
-		Containers:       s.ensureContainersSpec(),
-		Volumes:          s.ensureVolumes(),
-		Affinity:         &s.cluster.Spec.PodSpec.Affinity,
-		NodeSelector:     s.cluster.Spec.PodSpec.NodeSelector,
-		ImagePullSecrets: s.cluster.Spec.PodSpec.ImagePullSecrets,
+		InitContainers: s.ensureInitContainersSpec(),
+		Containers:     s.ensureContainersSpec(),
+		Volumes:        s.ensureVolumes(),
 		SecurityContext: &core.PodSecurityContext{
 			// mount volumes with mysql gid
 			FSGroup:   &fsGroup,
 			RunAsUser: &fsGroup,
 		},
+		Affinity:           s.cluster.Spec.PodSpec.Affinity,
+		ImagePullSecrets:   s.cluster.Spec.PodSpec.ImagePullSecrets,
+		NodeSelector:       s.cluster.Spec.PodSpec.NodeSelector,
+		PriorityClassName:  s.cluster.Spec.PodSpec.PriorityClassName,
+		Tolerations:        s.cluster.Spec.PodSpec.Tolerations,
+		ServiceAccountName: s.cluster.Spec.PodSpec.ServiceAccountName,
 	}
 }
 
diff --git a/pkg/internal/mysqlcluster/defaults.go b/pkg/internal/mysqlcluster/defaults.go
index 3d5418df4..bfd76fe17 100644
--- a/pkg/internal/mysqlcluster/defaults.go
+++ b/pkg/internal/mysqlcluster/defaults.go
@@ -58,15 +58,17 @@ func (cluster *MysqlCluster) SetDefaults(opt *options.Options) {
 	}
 
 	// set pod antiaffinity to nodes stay away from other nodes.
-	if cluster.Spec.PodSpec.Affinity.PodAntiAffinity == nil {
-		cluster.Spec.PodSpec.Affinity.PodAntiAffinity = &core.PodAntiAffinity{
-			PreferredDuringSchedulingIgnoredDuringExecution: []core.WeightedPodAffinityTerm{
-				core.WeightedPodAffinityTerm{
-					Weight: 100,
-					PodAffinityTerm: core.PodAffinityTerm{
-						TopologyKey: "kubernetes.io/hostname",
-						LabelSelector: &metav1.LabelSelector{
-							MatchLabels: cluster.GetLabels(),
+	if cluster.Spec.PodSpec.Affinity == nil {
+		cluster.Spec.PodSpec.Affinity = &core.Affinity{
+			PodAntiAffinity: &core.PodAntiAffinity{
+				PreferredDuringSchedulingIgnoredDuringExecution: []core.WeightedPodAffinityTerm{
+					core.WeightedPodAffinityTerm{
+						Weight: 100,
+						PodAffinityTerm: core.PodAffinityTerm{
+							TopologyKey: "kubernetes.io/hostname",
+							LabelSelector: &metav1.LabelSelector{
+								MatchLabels: cluster.GetLabels(),
+							},
 						},
 					},
 				},