Improve doc

README.md

@@ -2,7 +2,7 @@
 
 [![travis build status](https://img.shields.io/travis/fauust/ansible-role-mariadb?logo=travis)](https://travis-ci.org/fauust/ansible-role-mariadb)
 
-Install and configure MariaDB server on Debian/Ubuntu.
+Install and configure MariaDB Server on Debian/Ubuntu.
 
 Optionally, this role also permits to:
 
@@ -46,7 +46,7 @@ deploy the version packaged by the MariaDB Foundation.
 You will find the repositories URL here:
 <https://downloads.mariadb.org/mariadb/repositories/>
 
-By default we deploy the MariaDB Server version that comes with the distribution.
+By default, we deploy the MariaDB Server version that comes with the distribution.
 
 ### MariaDB service activation and restart
 
@@ -56,7 +56,7 @@ mariadb_can_restart: true
 ```
 
 **Warning:** you may consider setting `mariadb_can_restart` to `false` on
-production systems to prevent ansible runs to restart the MariaDB server.
+production systems to prevent ansible runs to restart the MariaDB Server.
 
 ### General configuration
 
@@ -64,15 +64,13 @@ To populate the MariaDB Server configuration file, we use almost only raw
 variables. This permits more flexibility and a very simple
 [`templates/my.cnf.j2`](./templates/my.cnf.j2) file.
 
-By default, some common and standard options are deployed.
+By default, some common and standard options are deployed based on MariaDB
+Foundation package and it should be easy to change all of them.
 
 #### Basic settings
 
-The following variables are also needed by playbooks so we can not use raw
-variables.
-
 ```yaml
-mariadb_config_file: /etc/mysql/my.cnf
+mariadb_config_file: "/etc/mysql/my.cnf"
 mariadb_datadir: "/var/lib/mysql"
 mariadb_port: "3306"
 mariadb_bind_address: "127.0.0.1"
@@ -224,10 +222,10 @@ mariadb_backup_db_name: []
 Database dump is done serially and compression (`gzip`) is done at the end to
 avoid too long locks.
 
-## Example Playbook
+## Example playbook
 
 ```yaml
-- hosts: database
+- hosts: db
   roles:
     - fauust.mariadb
 ```

my.cnf

@@ -0,0 +1,47 @@
+# Ansible managed
+
+[mariadb]
+
+# Basic settings
+user                  = mysql
+pid-file              = /run/mysqld/mysqld.pid
+socket                = /run/mysqld/mysqld.sock
+basedir               = /usr
+datadir               = /var/lib/mysql
+tmpdir                = /tmp
+lc-messages-dir       = /usr/share/mysql
+lc_messages           = en_US
+skip-external-locking
+port                  = 3306
+bind-address          = 127.0.0.1
+
+# Fine tuning
+max_connections         = 100
+connect_timeout         = 5
+wait_timeout            = 600
+max_allowed_packet      = 16M
+thread_cache_size       = 128
+sort_buffer_size        = 4M
+bulk_insert_buffer_size = 16M
+tmp_table_size          = 32M
+max_heap_table_size     = 32M
+
+# Logging
+log_error = /var/log/mysql/error.log
+
+# Query cache
+query_cache_size        = 16M
+
+# Character sets
+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!
+
+
+[mysqldump]
+quick
+quote-names
+max_allowed_packet = 16M