Mariadb version bump and check (#174)

* Bump the default mariadb_version to 10.11
* Drop hardcoded version in debian-12
* Set default mariadb_upgrade: false
* Implement a mariadb_version check

defaults/main.yml

@@ -4,7 +4,7 @@
 # MariaDB setting
 
 # Define mariadb version
-mariadb_version: "10.6"
+mariadb_version: "10.11"
 
 # Defines if we should enable the MariaDB repo or use version within OS repos.
 galera_enable_mariadb_repo: true
@@ -85,6 +85,11 @@ mariadb_charset_client: "utf8"
 #   mariadb:
 #     max_connections: 2048
 
+# Defines if mariadb is already available on the target hosts
+# It will compare version between ansible and system and exit early if missmatch
+# This prevent unexpected change on role upgrade
+mariadb_upgrade: false
+
 # Galera settings
 
 # Defines if the galera cluster should be reconfigured

tasks/checks.yml

@@ -34,3 +34,40 @@
   tags:
     - install
     - config
+
+- name: Check mariadb_version on target system
+  command: "mariadb -V"
+  check_mode: false
+  register: mariadb_version_check
+  failed_when: '"mariadb" not in mariadb_version_check.stdout and mariadb_version_check.rc == 0'
+  changed_when: not 'mariadb_version_check.rc == 0'
+  when: not mariadb_upgrade|bool
+  tags:
+    - install
+    - config
+
+- name: Extract MariaDB version
+  set_fact:
+    mariadb_version_checked: "{{ mariadb_version_check.stdout.split(' ')[5] }}"
+  check_mode: false
+  when: not mariadb_upgrade|bool and mariadb_version_check.rc == 0
+  tags:
+    - install
+    - config
+
+- name:
+  debug:
+    msg: "Installed {{ mariadb_version_checked }} - mariadb_version: {{ mariadb_version }}"
+  when: not mariadb_upgrade|bool and mariadb_version_check.rc == 0
+
+- name: Verify the expected mariadb_version
+  assert:
+    that: 'mariadb_version_checked.startswith("{{ mariadb_version }}")'
+    fail_msg: >-
+      The mariadb_version "{{ mariadb_version }}" doesn't match the one
+      installed on the system: {{ mariadb_version_checked }}.
+      Use the correct mariadb_version or set mariadb_upgrade: True
+  when: not mariadb_upgrade|bool and mariadb_version_check.rc == 0
+  tags:
+    - install
+    - config

vars/debian-12.yml

@@ -1,5 +1,4 @@
 ---
-mariadb_version: "10.11"
 mariadb_login_unix_socket: "/var/run/mysqld/mysqld.sock"
 mariadb_pre_req_packages:
   - "apt-transport-https"