diff --git a/roles/calico/defaults/main.yml b/roles/calico/defaults/main.yml
index 9146ebe..7666f2f 100644
--- a/roles/calico/defaults/main.yml
+++ b/roles/calico/defaults/main.yml
@@ -1,5 +1,8 @@
 # 部分calico相关配置，更全配置可以去roles/calico/templates/calico.yaml.j2自定义
 
+# 如果 node 节点有多块网卡，请设置 true
+NODE_WITH_MULTIPLE_NETWORKS: "false"
+
 # etcd 集群服务地址列表, 根据etcd组成员自动生成
 TMP_ENDPOINTS: "{% for h in groups['etcd'] %}https://{{ h }}:2379,{% endfor %}"
 ETCD_ENDPOINTS: "{{ TMP_ENDPOINTS.rstrip(',') }}"
diff --git a/roles/calico/templates/calico.yaml.j2 b/roles/calico/templates/calico.yaml.j2
index 371ff9e..9c03ad6 100644
--- a/roles/calico/templates/calico.yaml.j2
+++ b/roles/calico/templates/calico.yaml.j2
@@ -328,10 +328,12 @@ spec:
             - name: ENABLED_CONTROLLERS
               value: policy,profile,workloadendpoint,node
             # if hosts have multiple net interfaces, set following two ENVs
+{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
             - name: KUBERNETES_SERVICE_HOST
               value: "{{ MASTER_IP }}"
             - name: KUBERNETES_SERVICE_PORT
               value: "{{ KUBE_APISERVER.split(':')[2] }}"
+{% end if %}
           volumeMounts:
             # Mount in the etcd TLS secrets.
             - mountPath: /calico-secrets
diff --git a/roles/flannel/defaults/main.yml b/roles/flannel/defaults/main.yml
index 2a76171..7fabe7a 100644
--- a/roles/flannel/defaults/main.yml
+++ b/roles/flannel/defaults/main.yml
@@ -1,5 +1,8 @@
 # 部分flannel配置，详见roles/flannel/templates/kube-flannel.yaml.j2
 
+# 如果 node 节点有多块网卡，请设置 true
+NODE_WITH_MULTIPLE_NETWORKS: "false"
+ 
 # 设置flannel 后端
 #FLANNEL_BACKEND: "host-gw"
 FLANNEL_BACKEND: "vxlan"
diff --git a/roles/flannel/templates/kube-flannel.yaml.j2 b/roles/flannel/templates/kube-flannel.yaml.j2
index 302de9c..4245455 100644
--- a/roles/flannel/templates/kube-flannel.yaml.j2
+++ b/roles/flannel/templates/kube-flannel.yaml.j2
@@ -143,11 +143,14 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
+        # if hosts have multiple net interfaces, set following two ENVs
+{% if NODE_WITH_MULTIPLE_NETWORKS == 'true' %}
         - name: KUBERNETES_SERVICE_HOST
           value: "{{ MASTER_IP }}"
           #value: "{{ KUBE_APISERVER.split(':')[1].lstrip('/') }}"
         - name: KUBERNETES_SERVICE_PORT
           value: "{{ KUBE_APISERVER.split(':')[2] }}"
+{% end if %}
         volumeMounts:
         - name: run
           mountPath: /run