diff --git a/deployment/helm/datamate/charts/ray-cluster/values.yaml b/deployment/helm/datamate/charts/ray-cluster/values.yaml
index 7627f0f..9e7c650 100644
--- a/deployment/helm/datamate/charts/ray-cluster/values.yaml
+++ b/deployment/helm/datamate/charts/ray-cluster/values.yaml
@@ -97,7 +97,7 @@ head:
     limits:
       cpu: "2"
       # To avoid out-of-memory issues, never allocate less than 2G memory for the Ray head.
-      memory: "4G"
+      memory: "8G"
     requests:
       cpu: "1"
       memory: "2G"
diff --git a/deployment/helm/milvus/charts/minio/templates/deployment.yaml b/deployment/helm/milvus/charts/minio/templates/deployment.yaml
index ffa880b..b8e8ad5 100644
--- a/deployment/helm/milvus/charts/minio/templates/deployment.yaml
+++ b/deployment/helm/milvus/charts/minio/templates/deployment.yaml
@@ -72,7 +72,7 @@ spec:
 {{- end }}
       containers:
         - name: {{ .Chart.Name }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          image: "{{ .Values.global.imageRegistry }}{{ .Values.image.repository }}:{{ .Values.image.tag }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           {{- if .Values.s3gateway.enabled }}
           command:
diff --git a/deployment/helm/milvus/charts/minio/values.yaml b/deployment/helm/milvus/charts/minio/values.yaml
index 8ec27e2..949e012 100644
--- a/deployment/helm/milvus/charts/minio/values.yaml
+++ b/deployment/helm/milvus/charts/minio/values.yaml
@@ -10,6 +10,9 @@ fullnameOverride: ""
 ##
 clusterDomain: cluster.local
 
+global:
+  imageRegistry: ""
+
 ## Set default image, imageTag, and imagePullPolicy. mode is used to indicate the
 ##
 image:
diff --git a/deployment/helm/milvus/templates/streamingnode-deployment.yaml b/deployment/helm/milvus/templates/streamingnode-deployment.yaml
index d7d241b..87f1921 100644
--- a/deployment/helm/milvus/templates/streamingnode-deployment.yaml
+++ b/deployment/helm/milvus/templates/streamingnode-deployment.yaml
@@ -69,7 +69,7 @@ spec:
       {{- end }}
       containers:
       - name: streamingnode
-        image: "{{ .Values.image.all.repository }}:{{ .Values.image.all.tag }}"
+        image: "{{ .Values.global.imageRegistry }}{{ .Values.image.all.repository }}:{{ .Values.image.all.tag }}"
         imagePullPolicy: {{ .Values.image.all.pullPolicy }}
         {{ if and (.Values.containerSecurityContext) (not .Values.streamingNode.containerSecurityContext) }}
         securityContext:
diff --git a/deployment/helm/milvus/values.yaml b/deployment/helm/milvus/values.yaml
index 3731964..584cdcc 100644
--- a/deployment/helm/milvus/values.yaml
+++ b/deployment/helm/milvus/values.yaml
@@ -8,6 +8,9 @@ fullnameOverride: ""
 cluster:
   enabled: false
 
+global:
+  imageRegistry: ""
+
 image:
   all:
     repository: milvusdb/milvus