service: Add support for mariadb

roles/service/meta/argument_specs.yaml

@@ -251,6 +251,7 @@ argument_specs:
         type: str
         choices:
           - postgres
+          - mariadb
           - none
         required: false
         default: none

roles/service/tasks/database.yaml

@@ -1,22 +1,23 @@
 ---
+- name: Incude variables for database {{ service_database_type }}
+  ansible.builtin.include_vars:
+    file: database/{{ service_database_type }}.yaml
+
 - name: Database container for {{ service_name }}
   ansible.builtin.import_role:
     name: container
   vars:
     container_name: "{{ service_name }}-{{ service_database_type }}" # This doesn't use _service_database_name to allow container role handlers to work
-    container_image: "{{ service_postgres_image }}:{{ service_postgres_tag }}"
+    container_image: "{{ _service_database_image }}"
     container_mounts:
       - type: volume
         source: "{{ _service_database_name }}"
-        destination: /var/lib/postgresql/data
+        destination: "{{ _service_database_mount_destination }}"
     container_networks: "{{ _service_database_networks }}"
     container_ip: >-
       {{ service_container_ip | ansible.utils.ipmath(1) if _service_static_ip else '' }}
     container_secrets:
       - name: "{{ _service_database_name }}"
         target: "{{ service_database_type }}"
-    container_env:
+    container_env: "{{ _service_database_env }}"
-      POSTGRES_USER: "{{ service_name | replace('-', '_') }}"
-      POSTGRES_PASSWORD_FILE: "/run/secrets/{{ service_database_type }}"
-      POSTGRES_INITDB_ARGS: "--encoding=UTF-8 --lc-collate=C --lc-ctype=C"
     container_auto_update: "{{ service_auto_update }}"

roles/service/vars/database/mariadb.yaml

@@ -0,0 +1,8 @@
+---
+_service_database_image: docker.io/library/mariadb:lts
+_service_database_mount_destination: /var/lib/mysql
+_service_database_env:
+  MARIADB_RANDOM_ROOT_PASSWORD: "1"
+  MARIADB_USER: "{{ service_name | replace('-', '_') }}"
+  MARIADB_DATABASE: "{{ service_name | replace('-', '_') }}"
+  MARIADB_PASSWORD_FILE: "/run/secrets/{{ service_database_type }}"

roles/service/vars/database/postgres.yaml

@@ -0,0 +1,7 @@
+---
+_service_database_image: "{{ service_postgres_image }}:{{ service_postgres_tag }}"
+_service_database_mount_destination: /var/lib/postgresql/data
+_service_database_env:
+  POSTGRES_USER: "{{ service_name | replace('-', '_') }}"
+  POSTGRES_PASSWORD_FILE: "/run/secrets/{{ service_database_type }}"
+  POSTGRES_INITDB_ARGS: "--encoding=UTF-8 --lc-collate=C --lc-ctype=C"