Install tasks in seperated directory

tasks/install/default_mariadb.yml

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+---
+
+- name: SHELL | Get MariaDB target version
+  shell: LANG=C apt-cache depends mariadb-server | awk -F '-' '/Depends/ { print $NF }'
+  register: apt_mariadb_version
+  changed_when: false
+
+- name: DEBCONF | Prepare MariaDB silent installation (root password)
+  debconf: name='mariadb-server-{{ apt_mariadb_version.stdout }}' question='mysql-server/root_password' vtype='password' value='{{ mysql_root_password }}'
+  when: not mysql_exists.stat.exists
+
+- name: DEBCONF | Prepare MariaDB silent installation (root password again)
+  debconf: name='mariadb-server-{{ apt_mariadb_version.stdout }}' question='mysql-server/root_password_again' vtype='password' value='{{ mysql_root_password }}'
+  when: not mysql_exists.stat.exists
+
+- name: APT | Install MariaDB server
+  apt: pkg=mariadb-server state=latest
+

tasks/install/default_mysql.yml

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+---
+
+- name: SHELL | Get MySQL target version
+  shell: LANG=C apt-cache depends mysql-server | awk -F '-' '/Depends/ { print $NF }'
+  register: apt_mysql_version
+  changed_when: false
+
+- name: DEBCONF | Prepare MySQL silent installation (root password)
+  debconf: name='mysql-server-{{ apt_mysql_version.stdout }}' question='mysql-server/root_password' vtype='password' value='{{ mysql_root_password }}'
+  when: not mysql_exists.stat.exists
+
+- name: DEBCONF | Prepare MySQL silent installation (root password again)
+  debconf: name='mysql-server-{{ apt_mysql_version.stdout }}' question='mysql-server/root_password_again' vtype='password' value='{{ mysql_root_password }}'
+  when: not mysql_exists.stat.exists
+
+- name: APT | Install MySQL server
+  apt: pkg=mysql-server state=latest
+

tasks/install/main.yml

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+---
+
+- name: FAIL | If config asked is impossible
+  fail: msg="config asked is impossible origin -> {{ mysql_origin }} vendor -> {{ mysql_vendor }}"
+  when: >
+    not (
+    (mysql_origin == 'default' and mysql_vendor == 'mysql') or
+    (mysql_origin == 'default' and mysql_vendor == 'mariadb' and ansible_distribution_major_version > 7) or
+    (mysql_origin == 'upstream' and mysql_vendor == 'mariadb') or
+    (mysql_origin ==  'upstream' and mysql_vendor == 'percona')
+    )
+
+- name: APT_KEY | Install Percona key
+  apt_key: keyserver="keyserver.ubuntu.com" id="1C4CBDCDCD2EFD2A" state=present
+#apt_key: keyserver="keys.gnupg.net" id="1C4CBDCDCD2EFD2A" state=present
+
+#- name: TEMPLATE | Deploy APT pinning (prevent upgrades from Debian)
+#  template: src=etc/apt/preferences.d/95-percona.j2 dest=/etc/apt/preferences.d/95-percona
+
+- name: APT_REPOSITORY | Add Percona repository
+  apt_repository: repo='deb {{ percona_repository }} {{ ansible_distribution_release }} main' state=present
+
+- name: APT_RESPOSITORY | Add Percona (src) repository
+  apt_repository: repo='deb-src {{ percona_repository }} {{ ansible_distribution_release }} main' state=present
+
+- name: INCLUDE | Install MySQL from default repo
+  include: 'default_mysql.yml'
+  when: mysql_origin == 'default' and mysql_vendor == 'mysql'
+
+- name: INCLUDE | Install MariaDB from Debian repo
+  include: 'default_mariadb.yml'
+  when: mysql_origin == 'default' and mysql_vendor == 'mariadb' and ansible_distribution_major_version > 7
+
+- name: INCLUDE | Install MariaDB from MariaDB repo
+  include: 'upstream_mariadb.yml'
+  when: mysql_origin == 'upstream' and mysql_vendor == 'mariadb'
+
+- name: INCLUDE | Install Percona Server from Percona repo
+  include: 'upstream_percona.yml'
+  when: mysql_origin ==  'upstream' and mysql_vendor == 'percona'
+
+- name: APT | Install few MySQL related tools
+  apt: pkg={{ item }} state=latest
+  with_items:
+    - mytop
+    - percona-toolkit
+    - python-mysqldb
+    - percona-xtrabackup
+    - mysqltuner
+

tasks/install/upstream_mariadb.yml

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+---
+
+- name: APT | Install MariaDB key
+  apt_key: keyserver="keyserver.ubuntu.com" id="0xcbcb082a1bb943db" state=present
+
+- name: APT | Add MariaDB repository
+  apt_repository: repo='deb {{ mariadb_repository }} {{ ansible_distribution_release }} main' state=present
+
+- name: APT | Add MariaDB (src) repository
+  apt_repository: repo='deb-src {{ mariadb_repository }} {{ ansible_distribution_release }} main' state=present
+
+- name: INCLUDE | Normal Install
+  include: default_mariadb.yml
+

tasks/install/upstream_percona.yml

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+---
+
+- name: DEBCONF | Prepare MySQL silent installation (root password)
+  debconf: name='percona-server-server-{{ percona_version }}' question='percona-server-server/root_password' vtype='password' value='{{ mysql_root_password }}'
+  when: not mysql_exists.stat.exists
+
+- name: DEBCONF | Prepare MySQL silent installation (root password)
+  debconf: name='percona-server-server-{{ percona_version }}' question='percona-server-server/root_password_again' vtype='password' value='{{ mysql_root_password }}'
+  when: not mysql_exists.stat.exists
+
+- name: APT | Install Percona
+  apt: update_cache=yes cache_valid_time=3600 pkg='percona-server-server-{{ percona_version }}' state=latest
+