-openstack_username, openstack_tenant_id (password), and openstack_api_key are user's credentials to access the Openstack-based cloud. Note that in the Rackspace web interface, openstack_api_key can be found by clicking on the username on the top-right corner of the GUI and then "Account Settings".
+openstack_username, openstack_tenant_id (password), and openstack_api_key are user's credentials to access the OpenrStack-based cloud. Note that in the Rackspace web interface, openstack_api_key can be found by clicking on the username on the top-right corner of the GUI and then "Account Settings".
+
+Some global parameters used for all components are also required:
+ ubuntu_1404_image: PUT THE UBUNTU 14.04 IMAGE NAME HERE
+ ubuntu_1604_image: PUT THE UBUNTU 16.04 IMAGE NAME HERE
+ flavor_small: PUT THE SMALL FLAVOR NAME HERE
+ flavor_medium: PUT THE MEDIUM FLAVOR NAME HERE
+ flavor_large: PUT THE LARGE FLAVOR NAME HERE
+ flavor_xlarge: PUT THE XLARGE FLAVOR NAME HERE
+ flavor_xxlarge: PUT THE XXLARGE FLAVOR NAME HERE
+
+To get the images in your OpenStack environment, use the following OpenStack CLI command:
+
+ openstack image list | grep 'ubuntu'
+
+To get the flavor names used in your OpenStack environment, use the following OpenStack CLI command:
+
+ openstack flavor list
+
+Some network parameters must be configured
+ dns_list: PUT THE ADDRESS OF THE EXTERNAL DNS HERE (e.g. a comma-separated list of IP addresses in your /etc/resolv.conf in UNIX-based Operating Systems). THIS LIST MUST INCLUDE THE DNS SERVER THAT OFFERS DNS AS AS SERVICE (see DCAE section below for more details)
+ external_dns: PUT THE FIRST ADDRESS OF THE EXTERNAL DNS LIST HERE
+ oam_network_cidr: 10.0.0.0/16
+
+You can use the Google Public DNS 8.8.8.8 and 4.4.4.4 address or your internal DNS servers