diff --git a/comac/sample/kubespray-inventory/extra-vars.yaml b/comac/sample/kubespray-inventory/extra-vars.yaml
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+# Copyright 2019-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Sample kubespray override variables for COMAC deploy.
+# Pass this file as an extra variables when running kubespray. For example,
+# ansible-playbook -b -i inventory/comac/hosts.ini -e @inventory/comac/extra-vars.yaml cluster.yml
+# Tested with Kubespray release-2.11
+
+# OS
+disable_swap: true
+populate_inventory_to_hosts_file: true
+
+# etcd
+etcd_deployment_type: docker
+etcd_memory_limit: 8192M
+
+# Docker
+docker_iptables_enabled: true
+
+# K8S
+kubeadm_enabled: true
+kubelet_deployment_type: host
+kubectl_localhost: true
+kubeconfig_localhost: true
+
+kube_feature_gates: [SCTPSupport=True]
+kube_pods_subnet: 172.18.0.0/17
+kube_service_addresses: 172.18.128.0/17
+kube_apiserver_node_port_range: 2000-36767
+kube_network_plugin: calico
+kube_network_plugin_multus: true
+multus_version: stable
+ipip: false
+
+local_volume_provisioner_enabled: true
+
+# Applications
+dns_mode: coredns
+dns_cores_per_replica: 256
+dns_min_replicas: 1
+
+helm_enabled: true
+helm_deployment_type: host
+helm_version: v2.14.2