[GALERA] Install and configuration: first and other nodes

tasks/galera/bootstrap.yml

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+---
+- set_fact:
+    booboo: /var/lib/mysql/.ansible_galera_boostrap
+
+- name: STAT | Bootstrap mark
+  stat: path={{ booboo }}
+  register: s
+
+- block:
+
+    - name: COMMAND | Stop MariaDB
+      service: name=mysql state=stopped
+
+    - name: COMMAND | Bootstrap first node
+      command: galera_new_cluster
+      register: bootstrap_run
+
+  when: not s.stat.exists
+
+- name: COMMAND | Create Bootstrap mark
+  command: "touch {{ booboo }}"
+  args:
+    creates: "{{ booboo }}"

tasks/galera/main.yml

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+---
+
+- name: TEMPLATE | Deploy Galera configuration
+  template: src=etc/mysql/conf.d/09-galera.cnf.j2 dest=/etc/mysql/conf.d/09-galera.cnf
+  register: galeraconfig
+
+- name: INCLUDE | Bootstrap first node
+  include: 'bootstrap.yml'
+  when: inventory_hostname == mysql_galera_primary_node
+
+- name: INCLUDE | Configure other nodes
+  include: 'nodes.yml'
+  when: inventory_hostname != mysql_galera_primary_node
+
+- name: SERVICE | Restart MariaDB if needed
+  service: name=mysql state=restarted
+  when: >
+    (galeraconfig or (p is defined and p.changed)) and
+    (bootstrap_run is not defined)

tasks/galera/nodes.yml

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+---
+
+- name: COMMAND | GET debian.cnf from primary node
+  command: cat /etc/mysql/debian.cnf
+  register: debiancnf
+  delegate_to: '{{ mysql_galera_primary_node }}'
+
+- name: COMMAND | Get current debian.cnf
+  command: cat /etc/mysql/debian.cnf
+  register: ondc
+
+- block:
+
+  - name: SERVICE | Stop MariaDB
+    service: name=mysql state=stopped
+
+  - name: COPY | Paste primary node's debian.cnf
+    copy: >
+      content={{ debiancnf.stdout }}
+      dest=/etc/mysql/debian.cnf
+      mode=0600
+      owner=root
+      group=root
+    register: paste
+
+  - name: SERVICE | Start MariaDB
+    service: name=mysql state=started
+
+  when: debiancnf.stdout != ondc.stdout