Allow extra free-form configuration for nova

ansible/kolla-openstack.yml

@@ -20,6 +20,7 @@
             - { name: magnum, file: magnum.conf }
             - { name: neutron, file: neutron.conf }
             - { name: neutron_ml2, file: neutron/ml2_conf.ini }
+            - { name: nova, file: nova.conf }
 
         - name: Initialise a fact containing extra configuration
           set_fact:
@@ -92,3 +93,4 @@
       kolla_extra_magnum: "{{ kolla_extra_config.magnum | default }}"
       kolla_extra_neutron: "{{ kolla_extra_config.neutron | default }}"
       kolla_extra_neutron_ml2: "{{ kolla_extra_config.neutron_ml2 | default }}"
+      kolla_extra_nova: "{{ kolla_extra_config.nova | default }}"

ansible/roles/kolla-openstack/defaults/main.yml

@@ -219,3 +219,12 @@ kolla_extra_neutron:
 
 # Free form extra configuration to append to ml2_conf.ini.
 kolla_extra_neutron_ml2:
+
+###############################################################################
+# Nova configuration.
+
+# Whether to enable Nova.
+kolla_enable_nova:
+
+# Free form extra configuration to append to nova.conf.
+kolla_extra_nova:

ansible/roles/kolla-openstack/tasks/config.yml

@@ -23,6 +23,7 @@
     - { src: magnum.conf.j2, dest: magnum.conf, enabled: "{{ kolla_enable_magnum }}" }
     - { src: ml2_conf.ini.j2, dest: neutron/ml2_conf.ini, enabled: "{{ kolla_enable_neutron }}" }
     - { src: neutron.conf.j2, dest: neutron.conf, enabled: "{{ kolla_enable_neutron }}" }
+    - { src: nova.conf.j2, dest: nova.conf, enabled: "{{ kolla_enable_nova }}" }
     - { src: pxelinux.default.j2, dest: ironic/pxelinux.default, enabled: "{{ kolla_enable_ironic }}" }
   when: "{{ item.enabled | bool }}"
 

ansible/roles/kolla-openstack/templates/nova.conf.j2

@@ -0,0 +1,26 @@
+# {{ ansible_managed }}
+
+[DEFAULT]
+{% if kolla_enable_ironic | bool %}
+# Taken from the ironic configuration guide.
+
+# Flag to decide whether to use baremetal_scheduler_default_filters or not.
+# (boolean value)
+scheduler_use_baremetal_filters=True
+
+# Determines if the Scheduler tracks changes to instances to help with
+# its filtering decisions (boolean value)
+scheduler_tracks_instance_changes=False
+
+# For ironic, this should be set to a number >= the number of ironic nodes
+# to more evenly distribute instances across the nodes.
+scheduler_host_subset_size=9999999
+{% endif %}
+
+{% if kolla_extra_nova %}
+#######################
+# Extra configuration
+#######################
+
+{{ kolla_extra_nova }}
+{% endif %}