diff --git a/scheduler/complex/potassium.go b/scheduler/complex/potassium.go
index 98573c677..71827ac34 100644
--- a/scheduler/complex/potassium.go
+++ b/scheduler/complex/potassium.go
@@ -147,7 +147,7 @@ func (m *Potassium) SelectCPUNodes(ctx context.Context, scheduleInfos []resource
 	}
 	log.Infof(ctx, "[SelectCPUNodes] resources %v, need cpu: %f memory: %d", resources, quota, memory)
 	if quota <= 0 {
-		return nil, nil, 0, errors.WithStack(types.ErrNegativeQuota)
+		return nil, nil, 0, errors.WithStack(types.ErrNegativeCPU)
 	}
 	if len(scheduleInfos) == 0 {
 		return nil, nil, 0, errors.WithStack(types.ErrZeroNodes)
diff --git a/store/etcdv3/pod.go b/store/etcdv3/pod.go
index 6429eb453..a13318584 100644
--- a/store/etcdv3/pod.go
+++ b/store/etcdv3/pod.go
@@ -21,7 +21,13 @@ func (m *Mercury) AddPod(ctx context.Context, name, desc string) (*types.Pod, er
 	if err != nil {
 		return nil, err
 	}
-	_, err = m.Put(ctx, key, string(bytes))
+	resp, err := m.BatchCreate(ctx, map[string]string{key: string(bytes)})
+	if err != nil {
+		return nil, err
+	}
+	if !resp.Succeeded {
+		return nil, types.ErrTxnConditionFailed
+	}
 	return pod, err
 }
 
diff --git a/store/etcdv3/pod_test.go b/store/etcdv3/pod_test.go
index 2c6d1fedd..5c637cfdd 100644
--- a/store/etcdv3/pod_test.go
+++ b/store/etcdv3/pod_test.go
@@ -18,6 +18,9 @@ func TestPod(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, pod.Name, podname)
 
+	_, err = m.AddPod(ctx, podname, "CPU")
+	assert.Equal(t, err, types.ErrKeyExists)
+
 	pod2, err := m.GetPod(ctx, podname)
 	assert.NoError(t, err)
 	assert.Equal(t, pod2.Name, podname)
diff --git a/store/redis/pod.go b/store/redis/pod.go
index 8a697b2f9..4cde7442c 100644
--- a/store/redis/pod.go
+++ b/store/redis/pod.go
@@ -17,7 +17,7 @@ func (r *Rediaron) AddPod(ctx context.Context, name, desc string) (*types.Pod, e
 	if err != nil {
 		return nil, err
 	}
-	_, err = r.cli.Set(ctx, key, string(bytes), 0).Result()
+	err = r.BatchCreate(ctx, map[string]string{key: string(bytes)})
 	return pod, err
 }
 
diff --git a/store/redis/pod_test.go b/store/redis/pod_test.go
index f9c5288af..260a5108e 100644
--- a/store/redis/pod_test.go
+++ b/store/redis/pod_test.go
@@ -14,6 +14,9 @@ func (s *RediaronTestSuite) TestPod() {
 	s.NoError(err)
 	s.Equal(pod.Name, podname)
 
+	_, err = s.rediaron.AddPod(ctx, podname, "CPU")
+	s.Equal(err, ErrAlreadyExists)
+
 	pod2, err := s.rediaron.GetPod(ctx, podname)
 	s.NoError(err)
 	s.Equal(pod2.Name, podname)
diff --git a/types/errors.go b/types/errors.go
index 80b1535c9..ac6ddb4ec 100644
--- a/types/errors.go
+++ b/types/errors.go
@@ -17,10 +17,6 @@ var (
 	ErrInsufficientNodes   = errors.New("not enough nodes")
 	ErrAlreadyFilled       = errors.New("Cannot alloc a fill node plan, each node has enough workloads")
 
-	ErrNegativeMemory  = errors.New("memory must be positive")
-	ErrNegativeStorage = errors.New("storage must be positive")
-	ErrNegativeQuota   = errors.New("quota must be positive")
-
 	ErrZeroNodes = errors.New("no nodes provide to choose some")
 
 	ErrNodeFormat    = errors.New("bad endpoint name")
@@ -119,13 +115,19 @@ func NewDetailedErr(err error, details interface{}) error {
 
 // validation errors
 var (
-	ErrEmptyNodeName     = errors.New("node name is empty")
-	ErrEmptyAppName      = errors.New("app name is empty")
-	ErrEmptyPodName      = errors.New("pod name is empty")
-	ErrEmptyNodeEndpoint = errors.New("node endpoint is empty")
-	ErrEmptyImage        = errors.New("image is empty")
-	ErrEmptyCount        = errors.New("count is 0")
-	ErrEmptyWorkloadID   = errors.New("workload id is empty")
+	ErrEmptyNodeName      = errors.New("node name is empty")
+	ErrEmptyAppName       = errors.New("app name is empty")
+	ErrEmptyPodName       = errors.New("pod name is empty")
+	ErrEmptyNodeEndpoint  = errors.New("node endpoint is empty")
+	ErrEmptyImage         = errors.New("image is empty")
+	ErrEmptyCount         = errors.New("count is 0")
+	ErrEmptyWorkloadID    = errors.New("workload id is empty")
+	ErrNegativeCPU        = errors.New("cpu is negative")
+	ErrNegativeShare      = errors.New("share is negative")
+	ErrNegativeMemory     = errors.New("memory is negative")
+	ErrNegativeNUMAMemory = errors.New("numa memory is negative")
+	ErrNegativeStorage    = errors.New("storage is negative")
+	ErrNegativeVolumeSize = errors.New("volume size is negative")
 
 	ErrEmptyEntrypointName       = errors.New("entrypoint name is empty")
 	ErrUnderlineInEntrypointName = errors.New("entrypoint name has '_' character")
diff --git a/types/options.go b/types/options.go
index 83d772c04..a7eb60cb0 100644
--- a/types/options.go
+++ b/types/options.go
@@ -204,6 +204,28 @@ func (o *AddNodeOptions) Validate() error {
 	if o.Endpoint == "" {
 		return errors.WithStack(ErrEmptyNodeEndpoint)
 	}
+	if o.CPU < 0 {
+		return errors.WithStack(ErrNegativeCPU)
+	}
+	if o.Share < 0 {
+		return errors.WithStack(ErrNegativeShare)
+	}
+	if o.Memory < 0 {
+		return errors.WithStack(ErrNegativeMemory)
+	}
+	for _, m := range o.NumaMemory {
+		if m < 0 {
+			return errors.WithStack(ErrNegativeNUMAMemory)
+		}
+	}
+	for _, size := range o.Volume {
+		if size < 0 {
+			return errors.WithStack(ErrNegativeVolumeSize)
+		}
+	}
+	if o.Storage < 0 {
+		return errors.WithStack(ErrNegativeStorage)
+	}
 	return nil
 }
 
diff --git a/types/options_test.go b/types/options_test.go
index b3fe695d4..727f6f304 100644
--- a/types/options_test.go
+++ b/types/options_test.go
@@ -138,6 +138,25 @@ func TestValidatingAddNodeOptions(t *testing.T) {
 	assert.Equal(ErrEmptyNodeEndpoint, errors.Unwrap(o.Validate()))
 
 	o.Endpoint = "tcp://endpoint:2376"
+	o.CPU = -1
+	o.Share = -1
+	o.Memory = -1
+	o.NumaMemory = NUMAMemory{"0": -1}
+	o.Volume = VolumeMap{"/data": -1}
+	o.Storage = -1
+
+	assert.Equal(ErrNegativeCPU, errors.Unwrap(o.Validate()))
+	o.CPU = 1
+	assert.Equal(ErrNegativeShare, errors.Unwrap(o.Validate()))
+	o.Share = 100
+	assert.Equal(ErrNegativeMemory, errors.Unwrap(o.Validate()))
+	o.Memory = 100
+	assert.Equal(ErrNegativeNUMAMemory, errors.Unwrap(o.Validate()))
+	o.NumaMemory = nil
+	assert.Equal(ErrNegativeVolumeSize, errors.Unwrap(o.Validate()))
+	o.Volume = nil
+	assert.Equal(ErrNegativeStorage, errors.Unwrap(o.Validate()))
+	o.Storage = 1
 	assert.NoError(o.Validate())
 }