diff --git a/ansible/group_vars/all/bifrost b/ansible/group_vars/all/bifrost
index 9a5d4c1b845a428a5230a68dd3153d9eeecb39cb..53b6d0b3da4cac22110c24a6ba1ef9336444eea0 100644
--- a/ansible/group_vars/all/bifrost
+++ b/ansible/group_vars/all/bifrost
@@ -7,6 +7,9 @@
 # DIB base OS element.
 kolla_bifrost_dib_os_element: "centos7"
 
+# DIB image OS release.
+kolla_bifrost_dib_os_release: "GenericCloud"
+
 # List of DIB elements.
 kolla_bifrost_dib_elements:
   - "serial-console"
diff --git a/ansible/roles/kolla-bifrost/defaults/main.yml b/ansible/roles/kolla-bifrost/defaults/main.yml
index d0fed6d54c1b3f1e20a7d0eaf1120a6cd050c068..e9b47372a1a4053ac827ffcf5c7b48f9ed5c6aff 100644
--- a/ansible/roles/kolla-bifrost/defaults/main.yml
+++ b/ansible/roles/kolla-bifrost/defaults/main.yml
@@ -5,6 +5,9 @@ kolla_node_custom_config_path:
 # DIB image OS element.
 kolla_bifrost_dib_os_element:
 
+# DIB image OS release.
+kolla_bifrost_dib_os_release:
+
 # List of DIB image elements.
 kolla_bifrost_dib_elements: []
 
diff --git a/ansible/roles/kolla-bifrost/templates/dib.yml.j2 b/ansible/roles/kolla-bifrost/templates/dib.yml.j2
index 65147b3118b48099b2f771e38b4cf38a4e412bd7..e3456414f5ff050b5612182b4d06703485c92a13 100644
--- a/ansible/roles/kolla-bifrost/templates/dib.yml.j2
+++ b/ansible/roles/kolla-bifrost/templates/dib.yml.j2
@@ -2,11 +2,14 @@
 # Diskimage-builder element for base OS.
 dib_os_element: "{{ kolla_bifrost_dib_os_element }}"
 
+# DIB OS release.
+dib_os_release: "{{ kolla_bifrost_dib_os_release }}"
+
 # List of DIB image elements.
 dib_elements: "{{ (kolla_bifrost_dib_elements + [kolla_bifrost_dib_init_element]) | join(' ') }}"
 
 # DIB image environment variables.
-dib_env_vars: "{{ kolla_bifrost_dib_env_vars }}"
+{{ {'dib_env_vars': kolla_bifrost_dib_env_vars} | to_nice_yaml }}
 
 # List of DIB image packages.
 dib_packages: "{{ kolla_bifrost_dib_packages | join(',') }}"
diff --git a/etc/kayobe/bifrost.yml b/etc/kayobe/bifrost.yml
index d88eeabd81200f864107d30ac2ba9d920cc113cb..a9860f947b0e00efbb6ce5e3bb4e074a19ba268c 100644
--- a/etc/kayobe/bifrost.yml
+++ b/etc/kayobe/bifrost.yml
@@ -7,6 +7,9 @@
 # DIB base OS element.
 #kolla_bifrost_dib_os_element:
 
+# DIB image OS release.
+#kolla_bifrost_dib_os_release:
+
 # List of DIB elements.
 #kolla_bifrost_dib_elements: