Adding feature : auto-generated inventory file

README.md

@@ -1,7 +1,7 @@
 openstack-bootstrap
 ===================
 
-Create OpenStack instances and volume. also, attach and mount the volumes to the instances.
+Create OpenStack instances and volume. and, attach and mount the volumes to the instances. It also generates the Ansible inventory file automatically as a result.
 
 Requirements
 ------------
@@ -83,6 +83,21 @@ openstack_bootstrap_specs:
           path: /path/mount/02
 ```
 
+
+This role also generates the inventory file automatically under `inventory_dir`
+
+```yaml
+openstack_bootstrap_inventory:
+  filename: os_inventory.ini
+  force: yes
+  backup: no
+```
+
+- `filename` : The auto-generated inventory file name.
+- `force` : It will overwrites the file if it is `yes`.
+- `backup` : It will create backup file if it is `yes`.
+
+
 Dependencies
 ------------
 

defaults/main.yml

@@ -1,6 +1,11 @@
 ---
 # defaults file for openstack-bootstrap
 
+openstack_bootstrap_inventory:
+  filename: os_inventory.ini
+  force: yes
+  backup: no
+
 openstack_bootstrap_specs:
   - name: instance-name-01
     ansible:

tasks/inventory.yml

@@ -0,0 +1,15 @@
+---
+
+# ----------------------------------------------------------------------------------------------------------------------
+#  Generate the inventory file
+# ----------------------------------------------------------------------------------------------------------------------
+
+- name: "Generate the inventory file"
+  delegate_to: localhost
+  template:
+    src: os_inventory.ini.j2
+    dest: "{{ inventory_dir }}/{{ openstack_bootstrap_inventory.filename | default('os_inventory.ini') }}"
+    force: "{{ openstack_bootstrap_inventory.force | default(yes) }}"
+    backup: "{{ openstack_bootstrap_inventory.backup | default(no) }}"
+  tags:
+    - inventory

tasks/main.yml

@@ -7,3 +7,5 @@
   loop_control:
     loop_var: openstack_bootstrap_spec
 
+- name: "Generate the inventory file from result of openstack_bootstrap_specs"
+  include_tasks: inventory.yml

templates/os_inventory.ini.j2

@@ -0,0 +1,17 @@
+# Generated inventory file by openstack-bootstrap
+
+{% for os_group_name, os_hosts in groups.iteritems() %}
+{% if 'ungrouped' != os_group_name %}
+[{{ os_group_name }}]
+{% for os_host_name in os_hosts %}
+{% if 'localhost' != os_host_name %}
+{% if 'all' == os_group_name %}
+{{ os_host_name }}								ansible_host={{ hostvars[os_host_name].ansible_host }}
+{% else %}
+{{ os_host_name }}
+{% endif %}
+{% endif %}
+{% endfor %}
+{% endif %}
+
+{% endfor %}