M #-: Add SQLite DB backend

roles/database/README.md

@@ -13,7 +13,7 @@ Role Variables
 
 | Name          | Type  | Default      | Example | Description                                           |
 |---------------|-------|--------------|---------|-------------------------------------------------------|
-| `db_backend`  | `str` | `MariaDB`    |         | Can be `MariaDB` or `PostgreSQL`.                     |
+| `db_backend`  | `str` | `MariaDB`    |         | Can be `MariaDB`, `PostgreSQL` or `SQLite`.           |
 | `db_name`     | `str` | `opennebula` |         | Name of the database/schema used by OpenNebula.       |
 | `db_owner`    | `str` | `oneadmin`   |         | User used by OpenNebula to access the database.       |
 | `db_password` | `str` | `opennebula` |         | Password used by OpenNebula to authenticate the user. |

roles/database/defaults/main.yml

@@ -2,10 +2,12 @@
 db_supported_backends:
   - MariaDB
   - PostgreSQL
+  - SQLite
 
 db_backend_types:
   MariaDB: mysql
   PostgreSQL: postgresql
+  SQLite: sqlite
 
 db_backend: MariaDB
 

roles/database/tasks/main.yml

@@ -11,9 +11,11 @@
       Debian:
         MariaDB: [mariadb-server]
         PostgreSQL: [postgresql]
+        SQLite: [sqlite]
       RedHat:
         MariaDB: [mariadb-server]
         PostgreSQL: [postgresql-server]
+        SQLite: [sqlite]
   register: package
   until: package is success
   retries: 12
@@ -50,6 +52,7 @@
       RedHat:
         MariaDB: mariadb
         PostgreSQL: postgresql
+  when: db_backend != 'SQLite'
 
 - name: Create DB instance for OpenNebula
   ansible.builtin.shell:
@@ -75,3 +78,4 @@
       MariaDB: root
       PostgreSQL: postgres
   changed_when: false
+  when: db_backend != 'SQLite'

roles/opennebula/server/README.md

@@ -20,7 +20,7 @@ Role Variables
 | `one_vip`           | `str`  | undefined    | `10.11.12.13` | When OpenNebula is in HA mode it points to the Leader.                                                          |
 | `one_vip_if`        | `str`  | undefined    | `eth0`        | NIC device to assign the `one_vip` address to (on Frontends).                                                   |
 | `one_vip_cidr`      | `int`  | undefined    | `24`          | CIDR prefix of the subnet `one_vip` is allocated in.                                                            |
-| `db_backend`        | `str`  | `MariaDB`    |               | Can be `MariaDB` or `PostgreSQL`.                                                                               |
+| `db_backend`        | `str`  | `MariaDB`    |               | Can be `MariaDB`, `PostgreSQL` or `SQLite`.                                                                     |
 | `db_name`           | `str`  | `opennebula` |               | Name of the database/schema used by OpenNebula.                                                                 |
 | `db_owner`          | `str`  | `oneadmin`   |               | User used by OpenNebula to access the database.                                                                 |
 | `db_password`       | `str`  | `opennebula` |               | Password used by OpenNebula to authenticate the user.                                                           |

roles/precheck/tasks/main.yml

@@ -107,3 +107,13 @@
       - "{{ groups[node_group | d('node')] if groups[node_group | d('node')] is defined else [] }}"
     _hosts: "{{ _tmp | flatten | unique }}"
   tags: [preinstall]
+
+- name: Check if DB backend is supported for the HA setup
+  ansible.builtin.assert:
+    that: ((_frontend_count | int == 1) and (_force_ha is false))
+          or
+          (db_backend != 'SQLite')
+    msg: Please use either PostgreSQL or MariaDB as DB backend for HA setup.
+  vars:
+    _frontend_count: "{{ groups[frontend_group | d('frontend')] | count }}"
+    _force_ha: "{{ force_ha | d(false) | bool }}"