Full buster optim (#38)

* Remove Stretch and Percona support
* Delete root password management (On Buster, it uses socket auth)
* Fix sync backups files master -> slave
* Cleanup legacy code on replication slave
* Use modern configuration
* Debian buster configuration style
* Drop logrotate management (useless)
* Add new default values in defaults/main.yml (according with MariaDB doc)
* Travis with Ansible 2.8+
* Drop feature "don't replicate mysql database"
* Fully compatible with python3

.travis.yml

@@ -1,20 +1,12 @@
 env:
-  - PLATFORM='docker-stretch-default-master'    ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-default-master'     ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-stretch-upstream-master'   ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-upstream-master'    ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-stretch-default-galera-1'  ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-default-galera-1'   ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-stretch-upstream-galera-1' ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-upstream-galera-1'  ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-buster-default-master'     ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-default-master'     ANSIBLE_VERSION='ansible>=2.9,<2.10'
-  - PLATFORM='docker-buster-upstream-master'    ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-upstream-master'    ANSIBLE_VERSION='ansible>=2.9,<2.10'
-  - PLATFORM='docker-buster-default-galera-1'   ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-default-galera-1'   ANSIBLE_VERSION='ansible>=2.9,<2.10'
-  - PLATFORM='docker-buster-upstream-galera-1'  ANSIBLE_VERSION='ansible>=2.6,<2.7'
+  - PLATFORM='docker-buster-upstream-galera-1'  ANSIBLE_VERSION='ansible>=2.9,<2.10'
-  - PLATFORM='docker-stretch-default-master'    ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-stretch-upstream-master'   ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-stretch-default-galera-1'  ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-stretch-upstream-galera-1' ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-buster-default-master'     ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-buster-upstream-master'    ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-buster-default-galera-1'   ANSIBLE_VERSION='ansible>=2.7,<2.8'
-  - PLATFORM='docker-buster-upstream-galera-1'  ANSIBLE_VERSION='ansible>=2.7,<2.8'
 
 sudo: required
 

README.md

@@ -7,8 +7,6 @@ Install and configure MariaDB (Galera Cluster). Manage replication (master/slave
 
 | OS              | Origin    | MariaDB versions          |
 | --------------- | --------- | ------------------------- |
-| Debian Stretch  | Debian    | 10.1                      |
-| Debian Stretch  | Upstream  | 10.1 / 10.2 / 10.3 / 10.4 |
 | Debian Buster   | Debian    | 10.3                      |
 | Debian Buster   | Upstream  | 10.3 / 10.4               |
 
@@ -18,12 +16,11 @@ Notes
 * Galera Cluster is experimental
 * Due to Vagrant + Docker limitation (private network), replication/galera can't be checked with Travis
 * If you need to test this role with Vagrant, you must install hostmanager plugin: `vagrant plugin install vagrant-hostmanager`
-* Percona Xtrabackup is not available in upstream repository. This feature is disabled in the role.
 
 Requirements
 ------------
 
-Ansible 2.5+
+Ansible 2.8+
 
 Role Variables
 --------------
@@ -32,8 +29,6 @@ Role Variables
 
 ### Configuration
 
-- `mariadb_root_password`: root password (should be protected with [vault](http://docs.ansible.com/playbooks_vault.html))
-
 If you need a feature you can't configure, you can use this list. These config will go to `/etc/mysql/conf.d/01-extra`.
 
 - `mariadb_extra_config`: key/value hash see [default vars file](defaults/main.yml)
@@ -64,8 +59,6 @@ Check "priv" syntax in [mysql\_user module documentation](http://docs.ansible.co
 
 - `mariadb_version`: depends Debian version
 - `mariadb_repository`: MariaDB upstream APT repository (see: [MariaDB repositories tool](https://downloads.mariadb.org/mariadb/repositories))
-- `mariadb_percona_repository`: Percona upstream APT repository (see: [Percona APT doc](http://www.percona.com/doc/percona-server/5.5/installation/apt_repo.html))
-- `mariadb_use_percona_apt`: Force using Percona APT repository (useful when you want to use latest version of percona toolkits, xtrabackup... etc)
 
 Dependencies
 ------------

Vagrantfile

@@ -5,8 +5,6 @@
 
 Vagrant.configure("2") do |config|
 
-  vbox_deb_stretch = 'debian/stretch64'
-  dk_deb_stretch = 'hanxhx/vagrant-ansible:debian9'
   vbox_deb_buster = 'debian/buster64'
   dk_deb_buster = 'hanxhx/vagrant-ansible:debian10'
 
@@ -17,39 +15,17 @@ Vagrant.configure("2") do |config|
   config.hostmanager.include_offline = false
 
   cases = [
-    # ========================
-    # Debian Stretch
-    # ========================
-
-    # Default replication
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: dk_deb_stretch, vars: {mariadb_origin: 'default'  }, groups: ['master'] },
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: nil,            vars: {mariadb_origin: 'default'  }, groups: ['slave'] },
-
-    # Upstream replication
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: dk_deb_stretch, vars: {mariadb_origin: 'upstream' }, groups: ['master'] },
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: nil,            vars: {mariadb_origin: 'upstream' }, groups: ['slave'] },
-
-    # Galera Debian
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: dk_deb_stretch, vars: {mariadb_origin: 'default'  }, groups: ['galera', '1'] },
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: nil,            vars: {mariadb_origin: 'default'  }, groups: ['galera', '2'] },
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: nil,            vars: {mariadb_origin: 'default'  }, groups: ['galera', '3'] },
-
-    # Galera Upstream
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: dk_deb_stretch, vars: {mariadb_origin: 'upstream' }, groups: ['galera', '1'] },
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: nil,            vars: {mariadb_origin: 'upstream' }, groups: ['galera', '2'] },
-    { os_name: 'stretch', vbox: vbox_deb_stretch, docker: nil,            vars: {mariadb_origin: 'upstream' }, groups: ['galera', '3'] },
-
     # ========================
     # Debian Buster
     # ========================
 
     # Default replication
     { os_name: 'buster', vbox: vbox_deb_buster, docker: dk_deb_buster, vars: {mariadb_origin: 'default'  }, groups: ['master'] },
-#   { os_name: 'buster', vbox: vbox_deb_buster, docker: nil,           vars: {mariadb_origin: 'default'  }, groups: ['slave'] },
+    { os_name: 'buster', vbox: vbox_deb_buster, docker: nil,           vars: {mariadb_origin: 'default'  }, groups: ['slave'] },
 
     # Upstream replication
     { os_name: 'buster', vbox: vbox_deb_buster, docker: dk_deb_buster, vars: {mariadb_origin: 'upstream' }, groups: ['master'] },
-#   { os_name: 'buster', vbox: vbox_deb_buster, docker: nil,           vars: {mariadb_origin: 'upstream' }, groups: ['slave'] },
+    { os_name: 'buster', vbox: vbox_deb_buster, docker: nil,           vars: {mariadb_origin: 'upstream' }, groups: ['slave'] },
 
     # Galera Debian
     { os_name: 'buster', vbox: vbox_deb_buster, docker: dk_deb_buster, vars: {mariadb_origin: 'default'  }, groups: ['galera', '1'] },

defaults/main.yml

@@ -5,24 +5,19 @@
 # -------------------------------------
 mariadb_origin: 'default'
 mariadb_use_galera: false
-mariadb_root_password: 'change_me_NOW'
 mariadb_notify_restart: true
 mariadb_upstream_apt_src: false
-mariadb_manage_logrotate: true
 
 # -------------------------------------
 # Configuration
 # -------------------------------------
 
-# MariaDB configuration template
-mariadb_config_template: 'etc/mysql/my.cnf.j2'
-
 # MariaDB connection settings.
 mariadb_port: "3306"
 mariadb_bind_address: '127.0.0.1'
 mariadb_datadir: '/var/lib/mysql'
-mariadb_pid_file: '/var/run/mysqld/mysqld.pid'
+mariadb_pid_file: '/run/mysqld/mysqld.pid'
-mariadb_socket: '/var/run/mysqld/mysqld.sock'
+mariadb_socket: '/run/mysqld/mysqld.sock'
 
 # Slow query log settings.
 mariadb_slow_query_log_enabled: false
@@ -30,37 +25,38 @@ mariadb_slow_query_log_file: '/var/log/mysql/mysql_slow.log'
 mariadb_slow_query_time: 2
 
 # Memory settings (default values optimized ~512MB RAM).
+# Fine Tuning
 mariadb_key_buffer_size: '256M'
 mariadb_max_allowed_packet: '64M'
-mariadb_table_open_cache: '256'
+mariadb_max_connections: 100
-mariadb_sort_buffer_size: '1M'
+mariadb_thread_concurrency: "{{ ansible_processor_cores * 2 }}"
+
+
+mariadb_table_open_cache: '2000'
+mariadb_sort_buffer_size: '2M'
 mariadb_read_buffer_size: '1M'
-mariadb_read_rnd_buffer_size: '4M'
+mariadb_read_rnd_buffer_size: '2M'
-mariadb_myisam_sort_buffer_size: '64M'
+mariadb_myisam_sort_buffer_size: '128M'
-mariadb_thread_cache_size: '8'
+mariadb_thread_cache_size: '256'
 mariadb_query_cache_size: '16M'
 
 # Other settings.
 mariadb_wait_timeout: 28800
 
-# Try number of CPU's * 2 for thread_concurrency.
-mariadb_thread_concurrency: "{{ ansible_processor_cores * 2 }}"
-
 # InnoDB settings.
-mariadb_innodb_file_per_table: '1'
 mariadb_innodb_buffer_pool_size: "{{ (ansible_memtotal_mb * 0.2) | round | int }}M"
 mariadb_innodb_log_file_size: "64M" # If this setting changes on a running system, you will break it! http://dev.mysql.com/doc/refman/5.6/en/innodb-data-log-reconfiguration.html
 mariadb_innodb_log_buffer_size: '8M'
 mariadb_innodb_flush_log_at_trx_commit: '1'
 mariadb_innodb_lock_wait_timeout: 50
 
-# mysqldump settings.
-mariadb_mysqldump_max_allowed_packet: '64M'
-
 # Logging settings.
 mariadb_log_error: '/var/log/mysql/mysql_error.log'
 mariadb_syslog_tag: 'mysql'
 
+# mysqldump settings.
+mariadb_mysqldump_max_allowed_packet: '64M'
+
 # -------------------------------------
 # Extra configuration
 # -------------------------------------
@@ -101,8 +97,6 @@ mariadb_slave_import_data: true
 mariadb_slave_import_from: "{{ mariadb_replication_host }}"
 # Delete dump after slave configuration (set false if you have many slaves to install, it avoids to create many dumps)
 mariadb_slave_import_flush_dump: true
-# Slave uses mysql database from master?
-mariadb_slave_replicate_mysqldb: true
 # Don't replicate these DBs/tables
 mariadb_slave_ignore_db: []
 mariadb_slave_ignore_table: []
@@ -139,11 +133,3 @@ mariadb_wsrep_node_address: false # Set primary node IP
 mariadb_galera_members: []
 mariadb_galera_primary_node: 'change_me' # See: https://github.com/ansible/ansible/issues/17453
 mariadb_wsrep_stt_method: 'rsync'
-
-# -------------------------------------
-# Percona
-# -------------------------------------
-mariadb_percona_repository: 'http://repo.percona.com/apt'
-mariadb_use_percona_apt: false
-mariadb_install_xtrabackup_package: false
-mariadb_xtrabackup_package: "{{ mariadb_default_xtrabackup_package }}"

meta/main.yml

@@ -4,11 +4,10 @@ galaxy_info:
   description: Install and configure MariaDB (and Galera Cluster) on Debian
   company:
   license: GPLv2
-  min_ansible_version: 2.5
+  min_ansible_version: 2.8
   platforms:
   - name: Debian
     versions:
-    - stretch
     - buster
   galaxy_tags:
   - database
@@ -19,6 +18,5 @@ galaxy_info:
   - debian
   - galera
   - cluster
-  - stretch
 dependencies: []
 

tasks/galera/main.yml

@@ -2,8 +2,8 @@
 
 - name: TEMPLATE | Deploy Galera configuration
   template:
-    src: etc/mysql/conf.d/09-galera.cnf.j2
+    src: etc/mysql/mariadb.conf.d/20-galera.cnf.j2
-    dest: /etc/mysql/conf.d/09-galera.cnf
+    dest: /etc/mysql/mariadb.conf.d/20-galera.cnf
   register: galeraconfig
 
 - name: INCLUDE | Bootstrap first node

tasks/install/main.yml

@@ -1,9 +1,5 @@
 ---
 
-- name: INCLUDE | Setup Percona repository
-  import_tasks: 'percona/apt.yml'
-  when: mariadb_use_percona_apt | bool
-
 - name: INCLUDE | Setup MariaDB repository
   import_tasks: 'mariadb/upstream.yml'
   when: mariadb_origin == 'upstream'
@@ -15,8 +11,3 @@
   apt:
     pkg: "{{ mariadb_tools }}"
     install_recommends: no
-
-- name: APT | Install percona-xtrabackup if needed
-  apt:
-    pkg: "{{ mariadb_xtrabackup_package }}"
-  when: mariadb_install_xtrabackup_package | bool

tasks/install/mariadb/default.yml

@@ -1,26 +1,5 @@
 ---
 
-- 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: '{{ mariadb_root_password }}'
-  when: not mariadb_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: '{{ mariadb_root_password }}'
-  when: not mariadb_exists.stat.exists
-
 - name: APT | Install MariaDB server
   apt:
     pkg: mariadb-server

tasks/install/percona/apt.yml

@@ -1,16 +0,0 @@
----
-
-- name: APT | Install Percona repository
-  apt:
-    deb: https://repo.percona.com/apt/percona-release_latest.generic_all.deb
-
-- name: COMMAND | Enable percona tools repository
-  command: percona-release enable tools release
-  args:
-    creates: /etc/apt/sources.list.d/percona-tools-release.list
-  register: p
-
-- name: APT | Update cache
-  apt:
-    update_cache: yes
-  when: p.changed

tasks/main.yml

@@ -1,13 +1,5 @@
 ---
 
-- block:
-
-    - name: SET_FACT | Bypass https://github.com/ansible/ansible/issues/19874
-      set_fact:
-        ansible_distribution_release: 'buster'
-
-  when: ansible_facts.distribution_major_version == "buster/sid"
-
 - name: INCLUDE_VARS | Related to OS version
   include_vars: "{{ ansible_distribution }}-{{ ansible_distribution_release }}.yml"
 
@@ -20,35 +12,27 @@
 - name: INCLUDE | Install
   import_tasks: install/main.yml
 
-- name: TEMPLATE | Deploy configuration
+- name: TEMPLATE | Deploy config files
   template:
-    src: "{{ mariadb_config_template }}"
+    src: "{{ item }}"
-    dest: /etc/mysql/my.cnf
+    dest: "/{{ item | replace('.j2', '') }}"
+  loop:
+    - etc/mysql/my.cnf
+    - etc/mysql/conf.d/mysqldump.cnf.j2
+    - etc/mysql/mariadb.conf.d/10-extra.cnf.j2
+    - etc/mysql/mariadb.conf.d/50-client.cnf.j2
+    - etc/mysql/mariadb.conf.d/50-mysqld_safe.cnf.j2
+    - etc/mysql/mariadb.conf.d/50-server.cnf.j2
   register: config
 
-- name: TEMPLATE | Deploy extra configuration
-  template:
-    src: etc/mysql/conf.d/10-extra.cnf.j2
-    dest: /etc/mysql/conf.d/10-extra.cnf
-  register: extraconfig
-
 - name: SERVICE | Restart now (prevent bugs)
   service:
     name: mysql
     state: restarted
   when:
-    (config.changed or extraconfig.changed) and
+    config.changed and
     not mariadb_galera_resetup
 
-- name: TEMPLATE Create .my.cnf for root
-  template:
-    src: root/my.cnf
-    dest: /root/.my.cnf
-    owner: root
-    group: root
-    mode: 0600
-    backup: yes
-
 - name: INCLUDE | Galera
   import_tasks: galera/main.yml
   when: mariadb_use_galera
@@ -80,9 +64,3 @@
     host_all: "{{ item.host_all | default(omit) }}"
     state: present
   loop: "{{ mariadb_users }}"
-
-- name: TEMPLATE | Deploy logrotate configuration
-  template:
-    src: "etc/logrotate.d/mysql-server.j2"
-    dest: "/etc/logrotate.d/mysql-server"
-  when: mariadb_manage_logrotate | bool

tasks/replication/master.yml

@@ -2,6 +2,6 @@
 
 - name: TEMPLATE | Deploy master configuration
   template:
-    src: etc/mysql/conf.d/50-master.cnf.j2
+    src: etc/mysql/mariadb.conf.d/40-master.cnf.j2
-    dest: /etc/mysql/conf.d/50-master.cnf
+    dest: /etc/mysql/mariadb.conf.d/40-master.cnf
   notify: restart mariadb

tasks/replication/slave.yml

@@ -8,8 +8,8 @@
 
 - name: TEMPLATE | Deploy slave configuration
   template:
-    src: etc/mysql/conf.d/51-slave.cnf.j2
+    src: etc/mysql/mariadb.conf.d/40-slave.cnf.j2
-    dest: /etc/mysql/conf.d/51-slave.cnf
+    dest: /etc/mysql/mariadb.conf.d/40-slave.cnf
   notify: restart mariadb
 
 - name: MYSQL_REPLICATION | Get slave status
@@ -18,27 +18,16 @@
   ignore_errors: yes
   register: slave_status
 
-- name: INCLUDE | Transfert /etc/mysql/debian.cnf from master
-  import_tasks: slave/ssh.yml
-  when: mariadb_slave_replicate_mysqldb or ((slave_status.failed is defined or not slave_status.Is_Slave) and mariadb_slave_import_data)
-
 - name: INCLUDE | Import data
   import_tasks: slave/import_data.yml
-  when: (slave_status.failed is defined or not slave_status.Is_Slave) and mariadb_slave_import_data
+  when: (slave_status.failed or not slave_status.Is_Slave) and mariadb_slave_import_data
 
-- name: INCLUDE | Configure replication
+- name: Configure GTID Recplication
-  import_tasks: slave/replication.yml
+  import_tasks: slave/gtid.yml
-  when: (slave_status.failed is defined or not slave_status.Is_Slave) or mariadb_slave_force_setup
+  when: slave_status.failed or not slave_status.Is_Slave or mariadb_slave_force_setup
-
-- name: INCLUDE | Transfert /etc/mysql/debian.cnf from master
-  import_tasks: slave/debiancnf.yml
-  when: mariadb_slave_replicate_mysqldb
 
 - name: MYSQL_REPLICATION | Get slave status
   mysql_replication:
     mode: getslave
   ignore_errors: yes
   register: slave_status
-
-- name: Configure GTID
-  import_tasks: slave/gtid.yml

tasks/replication/slave/debiancnf.yml

@@ -1,25 +0,0 @@
----
-
-- name: FETCH | Get /etc/mysql/debian.cnf on master
-  fetch:
-    src: /etc/mysql/debian.cnf
-    dest: /tmp/{{ mariadb_slave_import_from }}/debian.cnf
-    flat: yes
-  changed_when: false
-  delegate_to: "{{ mariadb_slave_import_from }}"
-
-- name: LOCAL_ACTION FILE | Secure fetched file
-  local_action:
-    module: file
-    path: "/tmp/{{ mariadb_slave_import_from }}/debian.cnf"
-    mode: 0600
-  become: no
-
-- name: COPY | Fetched file to /etc/mysql/debian.cnf
-  copy:
-    src: "/tmp/{{ mariadb_slave_import_from }}/debian.cnf"
-    dest: /etc/mysql/debian.cnf
-    owner: root
-    group: root
-    mode: 0600
-  notify: restart mariadb

tasks/replication/slave/gtid.yml

@@ -1,15 +1,25 @@
 ---
 
-# Need this hack before:
-# - https://github.com/ansible/ansible/issues/29214
-# - https://mariadb.com/kb/en/mariadb/global-transaction-id/#switching-an-existing-old-style-slave-to-use-gtid
-
 - name: MYSQL_REPLICATION | Stop slave
   mysql_replication:
     mode: stopslave
 
-- name: COMMAND | Migrate to MariaDB GTID
+- name: MYSQL_REPLICATION | Configure master host
+  mysql_replication:
+    mode: changemaster
+    master_host: "{{ mariadb_replication_host }}"
+    master_port: "{{ mariadb_replication_port }}"
+    master_user: "{{ mariadb_replication_user }}"
+    master_password: "{{ mariadb_replication_password }}"
+
+# -- Wait this PR in Ansible released version (https://github.com/ansible/ansible/pull/62648)
+# name: MYSQL_REPLICATION | Setup replication with GTID
+# mysql_replication:
+#   master_use_gtid: current_pos
+
+- name: COMMAND | Configure GTID
   command: mariadb -e "CHANGE MASTER TO master_use_gtid=current_pos";
+  changed_when: true
 
 - name: MYSQL_REPLICATION | Start slave
   mysql_replication:

tasks/replication/slave/import_data.yml

@@ -1,39 +1,51 @@
 ---
 
-# Doc: https://www.percona.com/doc/percona-xtrabackup/2.1/howtos/recipes_ibkx_gtid.html
+- name: FILE | Create SSH client dir
-- name: WAIT_FOR | source data (prevent rsync bug) - TODO find another hack
+  file:
-  wait_for:
+    path: "{{ ansible_env.HOME }}/.ssh"
-    host: "{{ mariadb_slave_import_from }}"
+    state: directory
-    port: 22
+    mode: 0700
 
-- name: COMMAND | Prepare backup another server
+- name: OPENSSH_KEYPAIR | Create SSH key
-  command: innobackupex --no-timestamp {{ mariadb_backup_dir }}
+  openssh_keypair:
+    path: "{{ ansible_env.HOME }}/.ssh/id_rsa"
+  register: gen_ssh
+
+- block:
+
+  - name: AUTHORIZED_KEY | Auth slave to backup host
+    authorized_key:
+      user: "{{ mariadb_backup_user }}"
+      state: present
+      key: "{{ gen_ssh.public_key }}"
+
+  - name: FILE | Create backup directory
+    file:
+      path: "{{ mariadb_backup_dir }}"
+      state: directory
+
+  - name: COMMAND | Prepare backup another server
+    command: "mariabackup --backup -u root --target-dir={{ mariadb_backup_dir }}"
     args:
-    creates: "{{ mariadb_backup_dir }}"
+      creates: "{{ mariadb_backup_dir }}/xtrabackup_info"
-  delegate_to: "{{ mariadb_slave_import_from }}"
     register: backup
 
-- name: SHELL | Dump
+  - name: SHELL | Dump
-  shell: "innobackupex --apply-log {{ mariadb_backup_dir }}"
+    shell: "mariabackup --prepare --target-dir={{ mariadb_backup_dir }}"
-  delegate_to: "{{ mariadb_slave_import_from }}"
     when: backup.changed
+    register: prep
+    changed_when: "'This target seems to be not prepared yet' in prep.stderr"
 
-- name: FILE | Remove mysql db from backup
-  file:
-    path: "{{ mariadb_backup_dir }}/mysql"
-    state: absent
   delegate_to: "{{ mariadb_slave_import_from }}"
-  when: backup.changed and not mariadb_slave_replicate_mysqldb
 
 - name: MYSQL_VARIABLES | Get datadir
   mysql_variables:
     variable: datadir
   register: datadir
 
-- name: SET_FACT | related to mysql datadir
+- name: SET_FACT | Get MariaDB datadir
   set_fact:
     mariadb_datadir: "{{ datadir.msg }}"
-    mariadb_binlog_info: "{{ datadir.msg }}/xtrabackup_binlog_info"
 
 - name: SERVICE | Stop MariaDB before importing data
   service:
@@ -53,29 +65,17 @@
     group: mysql
     recurse: yes
 
+- name: SHELL | Remove InnoDB redo logs
+  shell: "rm -f {{ mariadb_datadir }}/ib_logfile*"
+  args:
+    removes: "{{ mariadb_datadir }}/ib_logfile0"
+    warn: false
+
 - name: SERVICE | Start MariaDB
   service:
     name: mysql
     state: started
 
-- name: SHELL | Get master_log_file
-  command: "awk '{ print $1 }' {{ mariadb_binlog_info }}"
-  register: master_log_file
-
-- name: SHELL | Get master_log_pos
-  command: "awk '{ print $2 }' {{ mariadb_binlog_info }}"
-  register: master_log_pos
-
-- name: SHELL | Get master GTID
-  command: "awk '{ print $3 }' {{ mariadb_binlog_info }}"
-  register: master_gtid
-
-- name: SET_FACT | master_log_file
-  set_fact:
-    mariadb_master_log_file: "{{ master_log_file.stdout }}"
-    mariadb_master_log_pos: "{{ master_log_pos.stdout }}"
-    mariadb_master_gtid: "{{ master_gtid.stdout }}"
-
 - name: FILE | Delete dump
   file:
     path: "{{ mariadb_backup_dir }}"

tasks/replication/slave/ssh.yml

@@ -1,19 +0,0 @@
----
-
-- name: SHELL | Create SSH key if needed on slave
-  shell: "ssh-keygen -b 2048 -t rsa -f {{ ansible_env.HOME }}/.ssh/id_rsa -q -N ''"
-  args:
-    creates: "{{ ansible_env.HOME }}/.ssh/id_rsa"
-
-- name: COMMAND | Get pub key
-  command: cat {{ ansible_env.HOME }}/.ssh/id_rsa.pub
-  register: pub_key
-  changed_when: false
-
-- name: AUTHORIZED_KEY | Auth slave to backup host
-  authorized_key:
-    user: "{{ mariadb_backup_user }}"
-    state: present
-    key: "{{ pub_key.stdout }}"
-  delegate_to: "{{ mariadb_slave_import_from }}"
-  become: yes

tasks/secure.yml

@@ -1,16 +1,5 @@
 ---
 
-- name: MYSQL_USER | Update mysql root password for all root accounts
-  mysql_user:
-    name: root
-    host: "{{ item }}"
-    password: "{{ mariadb_root_password }}"
-  loop:
-    - "{{ ansible_hostname }}"
-    - 127.0.0.1
-    - ::1
-    - localhost
-
 - name: MYSQL_USER | Remove all anonymous users
   mysql_user:
     name: ''

templates/etc/apt/preferences.d/95-percona.j2

@@ -1,6 +0,0 @@
-# {{ ansible_managed }}
-
-Explanation: Prevent Debian upgrades on percona packages
-Package: *
-Pin: release o=Percona Development Team
-Pin-Priority: 1001

templates/etc/mysql/conf.d/mysqldump.cnf.j2

@@ -0,0 +1,4 @@
+[mysqldump]
+quick
+quote-names
+max_allowed_packet	= {{ mariadb_mysqldump_max_allowed_packet }} 

templates/etc/mysql/mariadb.conf.d/20-galera.cnf.j2

@@ -29,6 +29,3 @@ binlog_format=ROW
 default_storage_engine=InnoDB
 innodb_autoinc_lock_mode=2
 innodb_doublewrite=1
-{% if mariadb_version == '10.0'%}
-query_cache_size=0
-{% endif %}

templates/etc/mysql/mariadb.conf.d/40-master.cnf.j2

@@ -2,7 +2,6 @@
 # {{ ansible_managed }}
 #
 
-#
 # Replication master
 
 [mysqld]

templates/etc/mysql/mariadb.conf.d/40-slave.cnf.j2

@@ -12,9 +12,6 @@ read-only
 {% endif %}
 
 # --> Ignore DB/tables
-{% if not mariadb_slave_replicate_mysqldb %}
-replicate-ignore-db=mysql
-{% endif %}
 {% for db in mariadb_slave_ignore_db %}
 replicate-ignore-db={{ db }}
 {% endfor %}

templates/etc/mysql/mariadb.conf.d/50-client.cnf.j2

@@ -0,0 +1,29 @@
+#
+# {{ ansible_managed }}
+#
+
+#
+# This group is read by the client library
+# Use it for options that affect all clients, but not the server
+#
+
+[client]
+# Default is Latin1, if you need UTF-8 set this (also in server section)
+default-character-set = utf8mb4
+
+# socket location
+socket = {{ mariadb_socket }}
+
+# Example of client certificate usage
+# ssl-cert=/etc/mysql/client-cert.pem
+# ssl-key=/etc/mysql/client-key.pem
+#
+# Allow only TLS encrypted connections
+# ssl-verify-server-cert=on
+
+# This group is *never* read by mysql client library, though this
+# /etc/mysql/mariadb.cnf.d/client.cnf file is not read by Oracle MySQL
+# client anyway.
+# If you use the same .cnf file for MySQL and MariaDB,
+# use it for MariaDB-only client options
+[client-mariadb]

templates/etc/mysql/mariadb.conf.d/50-mysqld_safe.cnf.j2

@@ -0,0 +1,34 @@
+#
+# {{ ansible_managed }}
+#
+
+# NOTE: This file is read only by the traditional SysV init script, not systemd.
+# MariaDB systemd does _not_ utilize mysqld_safe nor read this file.
+#
+# For similar behaviour, systemd users should create the following file:
+# /etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf
+#
+# To achieve the same result as the default 50-mysqld_safe.cnf, please create
+# /etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf
+# with the following contents:
+#
+# [Service]
+# User=mysql
+# StandardOutput=syslog
+# StandardError=syslog
+# SyslogFacility=daemon
+# SyslogLevel=err
+# SyslogIdentifier=mysqld
+#
+# For more information, please read https://mariadb.com/kb/en/mariadb/systemd/
+#
+
+[mysqld_safe]
+# This will be passed to all mysql clients
+# It has been reported that passwords should be enclosed with ticks/quotes
+# especially if they contain "#" chars...
+# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
+socket		= {{ mariadb_socket }}
+nice		= 0
+skip_log_error
+syslog

templates/etc/mysql/mariadb.conf.d/50-server.cnf.j2

@@ -0,0 +1,163 @@
+#
+# {{ ansible_managed }}
+#
+
+#
+# These groups are read by MariaDB server.
+# Use it for options that only the server (but not clients) should see
+#
+# See the examples of server my.cnf files in /usr/share/mysql
+
+# this is read by the standalone daemon and embedded servers
+[server]
+
+# this is only for the mysqld standalone daemon
+[mysqld]
+
+#
+# * Basic Settings
+#
+user                    = mysql
+pid-file                = {{ mariadb_pid_file }}
+socket                  = {{ mariadb_socket }}
+port                    = {{ mariadb_port }}
+basedir                 = /usr
+datadir                 = {{ mariadb_datadir }}
+tmpdir                  = /tmp
+lc-messages-dir         = /usr/share/mysql
+#skip-external-locking
+
+# Instead of skip-networking the default is now to listen only on
+# localhost which is more compatible and is not less secure.
+bind-address            = {{ mariadb_bind_address }}
+
+#
+# * Fine Tuning
+#
+key_buffer_size         = {{ mariadb_key_buffer_size }}
+max_allowed_packet      = {{ mariadb_max_allowed_packet }}
+#thread_stack           = 192K
+thread_cache_size       = {{ mariadb_thread_cache_size }}
+# This replaces the startup script and checks MyISAM tables if needed
+# the first time they are touched
+#myisam_recover_options = BACKUP
+max_connections         = {{ mariadb_max_connections }}
+#table_cache            = 64
+thread_concurrency      = {{ mariadb_thread_concurrency }}
+
+# Other tuning setting
+table_open_cache        = {{ mariadb_table_open_cache }}
+sort_buffer_size        = {{ mariadb_sort_buffer_size }}
+read_buffer_size        = {{ mariadb_read_buffer_size }}
+read_rnd_buffer_size    = {{ mariadb_read_rnd_buffer_size }}
+myisam_sort_buffer_size = {{ mariadb_myisam_sort_buffer_size }}
+
+#
+# * Query Cache Configuration
+#
+query_cache_size        = {{ mariadb_query_cache_size }}
+
+#
+# * Logging and Replication
+#
+# Both location gets rotated by the cronjob.
+# Be aware that this log type is a performance killer.
+# As of 5.1 you can enable the log at runtime!
+#general_log_file       = /var/log/mysql/mysql.log
+#general_log            = 1
+#
+# Error log - should be very few entries.
+#
+{% if mariadb_log_error == 'syslog' %}
+syslog
+syslog-tag = {{ mariadb_syslog_tag }}
+{% else %}
+log-error = {{ mariadb_log_error }}
+{% endif %}
+
+#
+# Enable the slow query log to see queries with especially long duration
+#slow_query_log_file    = /var/log/mysql/mariadb-slow.log
+#long_query_time        = 10
+#log_slow_rate_limit    = 1000
+#log_slow_verbosity     = query_plan
+#log-queries-not-using-indexes
+{% if mariadb_slow_query_log_enabled %}
+slow_query_log_file = {{ mariadb_slow_query_log_file }}
+long_query_time = {{ mariadb_slow_query_time }}
+slow_query_log = 1
+{% endif %}
+
+#
+# The following can be used as easy to replay backup logs or for replication.
+# note: if you are setting up a replication slave, see README.Debian about
+#       other settings you may need to change.
+#server-id              = 1
+#log_bin                = /var/log/mysql/mysql-bin.log
+#expire_logs_days       = 10
+#max_binlog_size        = 100M
+#binlog_do_db           = include_database_name
+#binlog_ignore_db       = exclude_database_name
+
+#
+# * Security Features
+#
+# Read the manual, too, if you want chroot!
+#chroot = /var/lib/mysql/
+#
+# For generating SSL certificates you can use for example the GUI tool "tinyca".
+#
+#ssl-ca = /etc/mysql/cacert.pem
+#ssl-cert = /etc/mysql/server-cert.pem
+#ssl-key = /etc/mysql/server-key.pem
+#
+# Accept only connections using the latest and most secure TLS protocol version.
+# ..when MariaDB is compiled with OpenSSL:
+#ssl-cipher = TLSv1.2
+# ..when MariaDB is compiled with YaSSL (default in Debian):
+#ssl = on
+
+#
+# * Character sets
+#
+# MySQL/MariaDB default is Latin1, but in Debian we rather default to the full
+# utf8 4-byte character set. See also client.cnf
+#
+character-set-server  = utf8mb4
+collation-server      = utf8mb4_general_ci
+
+#
+# * InnoDB
+#
+# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
+# Read the manual for more InnoDB related options. There are many!
+innodb_file_per_table = 1
+innodb_buffer_pool_size = {{ mariadb_innodb_buffer_pool_size }}
+innodb_log_buffer_size = {{ mariadb_innodb_log_buffer_size }}
+innodb_flush_log_at_trx_commit = {{ mariadb_innodb_flush_log_at_trx_commit }}
+innodb_lock_wait_timeout = {{ mariadb_innodb_lock_wait_timeout }}
+innodb_log_file_size = {{ mariadb_innodb_log_file_size }}
+
+
+#
+# * Unix socket authentication plugin is built-in since 10.0.22-6
+#
+# Needed so the root database user can authenticate without a password but
+# only when running as the unix root user.
+#
+# Also available for other users if required.
+# See https://mariadb.com/kb/en/unix_socket-authentication-plugin/
+
+# this is only for embedded server
+[embedded]
+
+# This group is only read by MariaDB servers, not by MySQL.
+# If you use the same .cnf file for MySQL and MariaDB,
+# you can put MariaDB-only options here
+[mariadb]
+
+# This group is only read by MariaDB-10.3 servers.
+# If you use the same .cnf file for MariaDB of different versions,
+# use this group for options that older servers don't understand
+[mariadb-10.3]
+

templates/etc/mysql/my.cnf

@@ -0,0 +1,23 @@
+# The MariaDB configuration file
+#
+# The MariaDB/MySQL tools read configuration files in the following order:
+# 1. "/etc/mysql/mariadb.cnf" (this file) to set global defaults,
+# 2. "/etc/mysql/conf.d/*.cnf" to set global options.
+# 3. "/etc/mysql/mariadb.conf.d/*.cnf" to set MariaDB-only options.
+# 4. "~/.my.cnf" to set user-specific options.
+#
+# If the same option is defined multiple times, the last one will apply.
+#
+# One can use all long options that the program supports.
+# Run program with --help to get a list of available options and with
+# --print-defaults to see which it would actually understand and use.
+
+#
+# This group is read both both by the client and the server
+# use it for options that affect everything
+#
+[client-server]
+
+# Import all .cnf files from configuration directory
+!includedir /etc/mysql/conf.d/
+!includedir /etc/mysql/mariadb.conf.d/

templates/etc/mysql/my.cnf.j2

@@ -1,81 +0,0 @@
-#
-# {{ ansible_managed }}
-#
-
-[client]
-port = {{ mariadb_port }}
-socket = {{ mariadb_socket }}
-
-[mysqld]
-port = {{ mariadb_port }}
-bind-address = {{ mariadb_bind_address }}
-datadir = {{ mariadb_datadir }}
-socket = {{ mariadb_socket }}
-
-{# TODO: FIX later #}
-# Logging configuration.
-{% if mariadb_log_error == 'syslog' %}
-syslog
-syslog-tag = {{ mariadb_syslog_tag }}
-{% else %}
-log-error = {{ mariadb_log_error }}
-{% endif %}
-
-{% if mariadb_slow_query_log_enabled %}
-# Slow query log configuration.
-slow_query_log = 1
-slow_query_log_file = {{ mariadb_slow_query_log_file }}
-long_query_time = {{ mariadb_slow_query_time }}
-{% endif %}
-
-# Disabling symbolic-links is recommended to prevent assorted security risks
-symbolic-links = 0
-
-# User is ignored when systemd is used (fedora >= 15).
-user = mysql
-
-# http://dev.mysql.com/doc/refman/5.5/en/performance-schema.html
-;performance_schema
-
-# Memory settings.
-key_buffer_size = {{ mariadb_key_buffer_size }}
-max_allowed_packet = {{ mariadb_max_allowed_packet }}
-table_open_cache = {{ mariadb_table_open_cache }}
-sort_buffer_size = {{ mariadb_sort_buffer_size }}
-read_buffer_size = {{ mariadb_read_buffer_size }}
-read_rnd_buffer_size = {{ mariadb_read_rnd_buffer_size }}
-myisam_sort_buffer_size = {{ mariadb_myisam_sort_buffer_size }}
-thread_cache_size = {{ mariadb_thread_cache_size }}
-query_cache_size = {{ mariadb_query_cache_size }}
-
-# Other settings.
-wait_timeout = {{ mariadb_wait_timeout }}
-
-# Try number of CPU's * 2 for thread_concurrency.
-thread_concurrency = {{ mariadb_thread_concurrency }}
-
-# InnoDB settings.
-innodb_file_per_table = {{ mariadb_innodb_file_per_table }}
-innodb_buffer_pool_size = {{ mariadb_innodb_buffer_pool_size }}
-innodb_log_buffer_size = {{ mariadb_innodb_log_buffer_size }}
-innodb_flush_log_at_trx_commit = {{ mariadb_innodb_flush_log_at_trx_commit }}
-innodb_lock_wait_timeout = {{ mariadb_innodb_lock_wait_timeout }}
-{# If this setting changes on a running system, you will break it! #}
-{# See how tho change it here: http://dev.mysql.com/doc/refman/5.6/en/innodb-data-log-reconfiguration.html #}
-{# TODO FIX -> Maybe detect a change and fail, just to be safe? #}
-innodb_log_file_size = {{ mariadb_innodb_log_file_size }}
-
-[mysqldump]
-quick
-max_allowed_packet = {{ mariadb_mysqldump_max_allowed_packet }}
-
-[mysqld_safe]
-pid-file = {{ mariadb_pid_file }}
-
-#
-# * IMPORTANT: Additional settings that can override those from this file!
-#   The files must end with '.cnf', otherwise they'll be ignored.
-#
-!includedir /etc/mysql/conf.d/
-
-# vim: set ft=dosini :

templates/root/my.cnf

@@ -1,7 +0,0 @@
-# ------------------------------------------
-# {{ ansible_managed }}
-# ------------------------------------------
-
-[client]
-user=root
-password="{{ mariadb_root_password }}"

tests/README.md

@@ -5,19 +5,19 @@ IMPORTANT
 ---------
 
 - DO NOT `vagrant up`! My Vagrantfile provides many VMs...
-- Each slave communicate to his master. You can't mix mysql and mariadb.
+- Each slave communicate to his master.
 
 Tests
 -----
 
-- vagrant up the master
+- vagrant up the-master
-- vagrant up the slave
+- vagrant up the-slave
 
 Wait master fully installed before run slave.
 
 Example:
 
 ```
-vagrant up stretch-upstream-mariadb-master
+vagrant up vbox-buster-default-master
-vagrant up stretch-upstream-mariadb-slave
+vagrant up vbox-buster-default-slave
 ```

tests/group_vars/all

@@ -1,6 +1,5 @@
 mariadb_bind_address: '0.0.0.0'
 mariadb_extra_configuration:
   innodb_commit_concurrency: 0
-mariadb_use_percona_apt: true
 mariadb_install_xtrabackup_package: true
 mariadb_slow_query_log_enabled: true

tests/test.yml

@@ -3,13 +3,16 @@
 - hosts: all
   gather_facts: false
   pre_tasks:
+
     - name: SETUP | Get facts
       setup:
       register: s
+
     - name: DEBUG | Show facts
       debug:
         var: s
   tasks:
+
     - name: APT | Install some packages
       apt:
         name: "{{ p }}"
@@ -22,11 +25,13 @@
   roles:
     - ../../
   tasks:
+
     - name: COPY | Deploy first dump
       copy:
         src: import1.sql
         dest: /tmp/import1.sql
       register: c
+
     - name: MYSQL_DB | Import first dump
       mysql_db:
         name: "{{ item }}"
@@ -37,37 +42,47 @@
 
 - hosts: slave
   pre_tasks:
+
     - name: SHELL | Get master IP
       shell: getent hosts {{ ansible_hostname | replace ('slave', 'master') }} | cut -d ' ' -f 1
       register: ip
       changed_when: false
+
     - name: SET_FACT | Apply some configuration
       set_fact:
         # MariaDB don't read /etc/hosts (from vagrant host plugin)
         mariadb_replication_host: "{{ ip.stdout }}"
         # Need this to use vagrant 'delegate_to'
         mariadb_slave_import_from: "{{ ansible_hostname | replace ('slave', 'master') }}"
+
   roles:
     - ../../
   tasks:
+
+    - block:
+
       - name: COPY | Deploy dump
         copy:
           src: import2.sql
           dest: /tmp/import2.sql
         delegate_to: "{{ mariadb_slave_import_from }}"
         register: c
+
       - name: MYSQL_DB | Import another dump
         mysql_db:
           name: "{{ item }}"
           state: import
           target: /tmp/import2.sql
         loop: ['testrepl', 'norepl']
-      delegate_to: "{{ mariadb_slave_import_from }}"
         when: c.changed
+
+      delegate_to: "{{ mariadb_slave_import_from }}"
+
     - name: MYSQL_REPLICATION | Get slave infos
       mysql_replication:
         mode: getslave
       register: slave
+
     - name: FAIL | if slave threads are not running
       fail:
         msg: "Slave issue"
@@ -75,14 +90,12 @@
 
 - hosts: galera
   pre_tasks:
-    - name: SET_FACT | Bypass https://github.com/ansible/ansible/issues/19874
+
-      set_fact:
-        ansible_distribution_release: 'buster'
-      when: ansible_facts.distribution_major_version == "buster/sid"
     - name: SET_FACT | Apply some configuration
       set_fact:
         mariadb_galera_primary_node: '{% if is_docker %}docker-{% else %}vbox-{% endif %}{{ ansible_distribution_release }}-{{ mariadb_origin }}-galera-1'
         mariadb_wsrep_node_address: "{{ '127.0.0.1' if is_docker else ansible_eth1.ipv4.address }}"
         mariadb_version: '10.3'
+
   roles:
     - ../../

vars/Debian-buster.yml

@@ -1,6 +1,5 @@
 mariadb_tools:
-  - percona-toolkit
+  - mariadb-backup
-  - python-mysqldb
   - mysqltuner
-
+  - percona-toolkit
-mariadb_default_xtrabackup_package: 'percona-xtrabackup-24'
+  - python{% if ansible_python_version is version('3', '>=') %}3{% endif %}-mysqldb

vars/Debian-stretch.yml

@@ -1,6 +0,0 @@
-mariadb_tools:
-  - percona-toolkit
-  - python-mysqldb
-  - mysqltuner
-
-mariadb_default_xtrabackup_package: 'percona-xtrabackup-24'