diff --git a/api/v1/seaweed_types.go b/api/v1/seaweed_types.go
index 338725d..36c2921 100644
--- a/api/v1/seaweed_types.go
+++ b/api/v1/seaweed_types.go
@@ -122,11 +122,11 @@ type MasterSpec struct {
 	// Config in raw toml string
 	Config *string `json:"config,omitempty"`
 
-	VolumePreallocate  *bool    `json:"volumePreallocate,omitempty"`
-	VolumeSizeLimitMB  *int32   `json:"volumeSizeLimitMB,omitempty"`
-	GarbageThreshold   *float64 `json:"garbageThreshold,omitempty"`
-	PulseSeconds       *int32   `json:"pulseSeconds,omitempty"`
-	DefaultReplication *string  `json:"defaultReplication,omitempty"`
+	VolumePreallocate  *bool   `json:"volumePreallocate,omitempty"`
+	VolumeSizeLimitMB  *int32  `json:"volumeSizeLimitMB,omitempty"`
+	GarbageThreshold   *string `json:"garbageThreshold,omitempty"`
+	PulseSeconds       *int32  `json:"pulseSeconds,omitempty"`
+	DefaultReplication *string `json:"defaultReplication,omitempty"`
 }
 
 // VolumeSpec is the spec for volume servers
diff --git a/api/v1/zz_generated.deepcopy.go b/api/v1/zz_generated.deepcopy.go
index 43ae982..af0b627 100644
--- a/api/v1/zz_generated.deepcopy.go
+++ b/api/v1/zz_generated.deepcopy.go
@@ -176,7 +176,7 @@ func (in *MasterSpec) DeepCopyInto(out *MasterSpec) {
 	}
 	if in.GarbageThreshold != nil {
 		in, out := &in.GarbageThreshold, &out.GarbageThreshold
-		*out = new(float64)
+		*out = new(string)
 		**out = **in
 	}
 	if in.PulseSeconds != nil {
diff --git a/config/crd/bases/seaweed.seaweedfs.com_seaweeds.yaml b/config/crd/bases/seaweed.seaweedfs.com_seaweeds.yaml
index 46ba57d..81bb00a 100644
--- a/config/crd/bases/seaweed.seaweedfs.com_seaweeds.yaml
+++ b/config/crd/bases/seaweed.seaweedfs.com_seaweeds.yaml
@@ -3525,6 +3525,9 @@ spec:
                   description: Annotations of the component. Merged into the cluster-level
                     annotations if non-empty
                   type: object
+                config:
+                  description: Config in raw toml string
+                  type: string
                 env:
                   description: List of environment variables to set in the container,
                     like v1.Container.Env. Note that following env names cannot be
@@ -6715,6 +6718,11 @@ spec:
                   description: Annotations of the component. Merged into the cluster-level
                     annotations if non-empty
                   type: object
+                config:
+                  description: Config in raw toml string
+                  type: string
+                defaultReplication:
+                  type: string
                 env:
                   description: List of environment variables to set in the container,
                     like v1.Container.Env. Note that following env names cannot be
@@ -6824,6 +6832,7 @@ spec:
                     - name
                     type: object
                   type: array
+                garbageThreshold: {}
                 hostNetwork:
                   description: Whether Hostnetwork of the component is enabled. Override
                     the cluster-level setting if present
@@ -6866,6 +6875,9 @@ spec:
                   description: PriorityClassName of the component. Override the cluster-level
                     one if present
                   type: string
+                pulseSeconds:
+                  format: int32
+                  type: integer
                 replicas:
                   description: The desired ready replicas
                   format: int32
@@ -6968,6 +6980,11 @@ spec:
                   description: Version of the component. Override the cluster-level
                     version if non-empty
                   type: string
+                volumePreallocate:
+                  type: boolean
+                volumeSizeLimitMB:
+                  format: int32
+                  type: integer
               required:
               - replicas
               type: object
diff --git a/controllers/controller_master_statefulset.go b/controllers/controller_master_statefulset.go
index e4099f1..0e79b38 100644
--- a/controllers/controller_master_statefulset.go
+++ b/controllers/controller_master_statefulset.go
@@ -24,7 +24,7 @@ func buildMasterStartupScript(m *seaweedv1.Seaweed) string {
 	}
 
 	if spec.GarbageThreshold != nil {
-		command = append(command, fmt.Sprintf("-garbageThreshold=%f", *spec.GarbageThreshold))
+		command = append(command, fmt.Sprintf("-garbageThreshold=%s", *spec.GarbageThreshold))
 	}
 
 	if spec.PulseSeconds != nil {