-# Create 3 virtual machine
-echo -e " - name: host3\n roles:\n - kube_node" >> deploy/conf/vm_environment/k8-nosdn-nofeature-noha.yml
-# Remove useless code
-sed -i "33,90d" deploy/adapters/ansible/kubernetes/ansible-kubernetes.yml
+config_vm(){
+ # Create 3 virtual machine
+ echo -e " - name: host3\n roles:\n - kube_node" >> deploy/conf/vm_environment/k8-nosdn-nofeature-noha.yml
+ # Remove useless code
+ # The ansible-kubernetes.yml file contains the list of softwares which will
+ # be installed on VM. But for IEC projects, some parts are not essnetial. So
+ # useless part will be removed.
+ # Delete some contents from line 28 to end.
+ sed -i '28,$d' deploy/adapters/ansible/kubernetes/ansible-kubernetes.yml