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

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_socket: '/var/run/mysqld/mysqld.sock'
+mariadb_pid_file: '/run/mysqld/mysqld.pid'
+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_sort_buffer_size: '1M'
+mariadb_max_connections: 100
+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_myisam_sort_buffer_size: '64M'
-mariadb_thread_cache_size: '8'
+mariadb_read_rnd_buffer_size: '2M'
+mariadb_myisam_sort_buffer_size: '128M'
+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 }}"