diff --git a/tasks/cassandra.yml b/tasks/cassandra.yml
index d36c647..8538a27 100644
--- a/tasks/cassandra.yml
+++ b/tasks/cassandra.yml
@@ -14,20 +14,20 @@
     msg: 'ds group is not defined in the inventory file, please define the ds group in the inventory file'
   when: groups['ds'] is not defined
 
-- name: Fail if dc1 group is not provided
+- name: Fail if dc-1 group is not provided
   fail:
-    msg: 'dc1 group is not defined in the inventory file, please define the dc1 group in the inventory file'
-  when: groups['dc1'] is not defined
+    msg: 'dc-1 group is not defined in the inventory file, please define the dc-1 group in the inventory file'
+  when: groups['dc-1'] is not defined
 
-- name: Fail if dc1-ds group is not provided
+- name: Fail if dc-1-ds group is not provided
   fail:
-    msg: 'dc1-ds group is not defined in the inventory file, please define the dc1-ds group in the inventory file'
-  when: groups['dc1-ds'] is not defined
+    msg: 'dc-1-ds group is not defined in the inventory file, please define the dc-1-ds group in the inventory file'
+  when: groups['dc-1-ds'] is not defined
 
-- name: Fail if dc1-ms group is not provided
+- name: Fail if dc-1-ms group is not provided
   fail:
-    msg: 'dc1-ms group is not defined in the inventory file, please define the dc1-ms group in the inventory file'
-  when: groups['dc1-ms'] is not defined
+    msg: 'dc-1-ms group is not defined in the inventory file, please define the dc-1-ms group in the inventory file'
+  when: groups['dc-1-ms'] is not defined
 
 - name: Construct cassandra hosts configuration
   become: yes
diff --git a/templates/silent-install.conf.j2 b/templates/silent-install.conf.j2
index 1635131..73fe40d 100644
--- a/templates/silent-install.conf.j2
+++ b/templates/silent-install.conf.j2
@@ -7,13 +7,13 @@
 
 LDAP_TYPE='{{ opdk_ldap_type }}'
 {% if opdk_ldap_type == '2' %}
-{% if groups['dc1-ldap'] is defined and groups['dc2-ldap'] is defined and inventory_hostname in groups['dc1'] %}
+{% if groups['dc-1-ldap'] is defined and groups['dc-2-ldap'] is defined and inventory_hostname in groups['dc-1'] %}
 LDAP_SID=1
-LDAP_PEER={{ hostvars[groups['dc2-ldap'][0]]['private_address']  }}
+LDAP_PEER={{ hostvars[groups['dc-2-ldap'][0]]['private_address']  }}
 {% endif %}
-{% if groups['dc1-ldap'] is defined and groups['dc2-ldap'] is defined and inventory_hostname in groups['dc2'] %}
+{% if groups['dc-1-ldap'] is defined and groups['dc-2-ldap'] is defined and inventory_hostname in groups['dc-2'] %}
 LDAP_SID=2
-LDAP_PEER={{ hostvars[groups['dc1-ldap'][0]]['private_address']  }}
+LDAP_PEER={{ hostvars[groups['dc-1-ldap'][0]]['private_address']  }}
 {% endif %}
 {% endif %}
 APIGEE_LDAPPW={{ opdk_ldap_pass }}
@@ -22,10 +22,10 @@
 MP_POD={{ opdk_mp_pod | default(default_mp_pod) }}
 
 {# TODO: Build a module that discover the region of the inventory_hostname and update the REGION dynamically #}
-{% if groups['dc1'] is defined and inventory_hostname in groups['dc1'] %}
-REGION=dc1
-{% elif groups['dc2'] is defined and inventory_hostname in groups['dc2'] %}
-REGION=dc2
+{% if groups['dc-1'] is defined and inventory_hostname in groups['dc-1'] %}
+REGION=dc-1
+{% elif groups['dc-2'] is defined and inventory_hostname in groups['dc-2'] %}
+REGION=dc-2
 {% elif groups['dc-3'] is defined and inventory_hostname in groups['dc-3'] %}
 REGION=dc-3
 {% endif %}
@@ -35,10 +35,10 @@
 ZK_HOSTS="{% for host in groups['ds'] %}{{ hostvars[host]['private_address'] }}{% if hostvars[host]['zk_observer'] is defined and hostvars[host]['zk_observer'] == 'true' %}:observer{% endif %}{% if not loop.last %} {% endif %}{% endfor %}"
 
 {# TODO: Build a module to construct the ZK_CLIENT_HOSTS value#}
-{% if groups['dc1'] is defined and inventory_hostname in groups['dc1'] %}
-ZK_CLIENT_HOSTS="{% for host in groups['dc1-ds'] %}{{ hostvars[host]['private_address'] }}{% if not loop.last %} {% endif %}{% endfor %}"
-{% elif groups['dc2'] is defined and inventory_hostname in groups['dc2']%}
-ZK_CLIENT_HOSTS="{% for host in groups['dc2-ds'] %}{{ hostvars[host]['private_address'] }}{% if not loop.last %} {% endif %}{% endfor %}"
+{% if groups['dc-1'] is defined and inventory_hostname in groups['dc-1'] %}
+ZK_CLIENT_HOSTS="{% for host in groups['dc-1-ds'] %}{{ hostvars[host]['private_address'] }}{% if not loop.last %} {% endif %}{% endfor %}"
+{% elif groups['dc-2'] is defined and inventory_hostname in groups['dc-2']%}
+ZK_CLIENT_HOSTS="{% for host in groups['dc-2-ds'] %}{{ hostvars[host]['private_address'] }}{% if not loop.last %} {% endif %}{% endfor %}"
 {% else %}
 ZK_CLIENT_HOSTS="{% for host in groups['ds'] %}{{ hostvars[host]['private_address'] }}{% if not loop.last %} {% endif %}{% endfor %}"
 {% endif %}
@@ -75,10 +75,10 @@
 MO_PG_PASSWD={{ pg_pass }}
 CASS_CLUSTERNAME={{ opdk_cass_clustername }}
 APIGEE_PORT_HTTP_MS={{ ms_ext_mgmt_port }}
-{% if groups['dc1-qpid'] is defined and inventory_hostname in groups['dc1-qpid'] %}
-QPID_HOST="{{  groups['dc1-qpid'] | join(' ') }}"
+{% if groups['dc-1-qpid'] is defined and inventory_hostname in groups['dc-1-qpid'] %}
+QPID_HOST="{{  groups['dc-1-qpid'] | join(' ') }}"
 {% else %}
-QPID_HOST="{{  groups['dc2-qpid'] | join(' ') }}"
+QPID_HOST="{{  groups['dc-2-qpid'] | join(' ') }}"
 {% endif %}
 QPID_PORT={{ qpid_ext_mgmt_port }}
 MX_GROUP=mxgroup
diff --git a/tests/test_cassandra_hosts.yml b/tests/test_cassandra_hosts.yml
index e59e7a5..5f7247f 100644
--- a/tests/test_cassandra_hosts.yml
+++ b/tests/test_cassandra_hosts.yml
@@ -15,7 +15,7 @@
   roles:
   - apigee-opdk-setup-default-settings
 
-- hosts: dc1-rmp[0]
+- hosts: dc-1-rmp[0]
   become: yes
   vars:
     opdk_cass_password: 'cassandra'