roles/mariadb: Manage /etc/mysql/my.cnf #25
25
roles/mariadb/defaults/main.yml
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25
roles/mariadb/defaults/main.yml
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---
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# file: roles/mariadb/defaults/main.yml
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#
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# Based on my running of mysqltuner.pl on a host with three WordPress databases
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# and a Piwik instance monitoring three sites.
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#
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# default is 128MB but is a waste because it seems only the mysql table uses it
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key_buffer_size: 32M
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# default is 128MB but is a waste because it seems only information_schema uses
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# AriaDB, see: https://mariadb.com/kb/en/mariadb/aria-system-variables
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aria_pagecache_buffer_size: 8M
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# default is 128M, but set to at least the size of your InnoDB data
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innodb_buffer_pool_size: 256M
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# Unless you have a pool size over 1GB, use a single instance
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# See: https://mariadb.com/kb/en/mariadb/xtradbinnodb-server-system-variables
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innodb_buffer_pool_instances: 1
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# default is 100 but the max I've seen used is 5, so let's reduce it
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max_connections: 33
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# vim: set ts=2 sw=2:
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5
roles/mariadb/handlers/main.yml
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5
roles/mariadb/handlers/main.yml
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---
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- name: restart mysql
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service: name=mysql state=restarted
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# vim: set ts=2 sw=2:
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@ -14,6 +14,12 @@
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- python-mysqldb # for ansible
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tags: mariadb
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- name: Create system my.cnf
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template: src=my.cnf.j2 dest=/etc/mysql/my.cnf owner=root group=root mode=0644
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notify:
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- restart mysql
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tags: mariadb
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- name: Start and enable MariaDB Service
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service: name=mysql state=started enabled=true
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tags: mariadb
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192
roles/mariadb/templates/my.cnf.j2
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192
roles/mariadb/templates/my.cnf.j2
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# MariaDB database server configuration file.
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#
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# You can copy this file to one of:
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# - "/etc/mysql/my.cnf" to set global options,
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# - "~/.my.cnf" to set user-specific options.
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#
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# One can use all long options that the program supports.
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# Run program with --help to get a list of available options and with
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# --print-defaults to see which it would actually understand and use.
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#
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# For explanations see
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# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
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# This will be passed to all mysql clients
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# It has been reported that passwords should be enclosed with ticks/quotes
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# escpecially if they contain "#" chars...
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# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
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[client]
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port = 3306
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socket = /var/run/mysqld/mysqld.sock
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# Here is entries for some specific programs
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# The following values assume you have at least 32M ram
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# This was formally known as [safe_mysqld]. Both versions are currently parsed.
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[mysqld_safe]
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socket = /var/run/mysqld/mysqld.sock
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nice = 0
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[mysqld]
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#
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# * Basic Settings
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#
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user = mysql
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pid-file = /var/run/mysqld/mysqld.pid
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socket = /var/run/mysqld/mysqld.sock
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port = 3306
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basedir = /usr
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datadir = /var/lib/mysql
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tmpdir = /tmp
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lc_messages_dir = /usr/share/mysql
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lc_messages = en_US
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skip-external-locking
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#
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# Instead of skip-networking the default is now to listen only on
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# localhost which is more compatible and is not less secure.
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bind-address = 127.0.0.1
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#
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# * Fine Tuning
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#
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max_connections = {{ max_connections }}
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connect_timeout = 5
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wait_timeout = 600
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max_allowed_packet = 16M
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thread_cache_size = 128
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sort_buffer_size = 4M
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bulk_insert_buffer_size = 16M
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tmp_table_size = 32M
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max_heap_table_size = 32M
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#
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# * MyISAM
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#
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# This replaces the startup script and checks MyISAM tables if needed
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# the first time they are touched. On error, make copy and try a repair.
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myisam_recover_options = BACKUP
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key_buffer_size = {{ key_buffer_size }}
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#open-files-limit = 2000
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table_open_cache = 400
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myisam_sort_buffer_size = 512M
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concurrent_insert = 2
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read_buffer_size = 2M
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read_rnd_buffer_size = 1M
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#
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# * Query Cache Configuration
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#
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# Cache only tiny result sets, so we can fit more in the query cache.
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query_cache_limit = 128K
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query_cache_size = 64M
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# for more write intensive setups, set to DEMAND or OFF
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#query_cache_type = DEMAND
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#
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# * Logging and Replication
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#
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# Both location gets rotated by the cronjob.
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# Be aware that this log type is a performance killer.
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# As of 5.1 you can enable the log at runtime!
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#general_log_file = /var/log/mysql/mysql.log
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#general_log = 1
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#
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# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
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#
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# we do want to know about network errors and such
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log_warnings = 2
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#
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# Enable the slow query log to see queries with especially long duration
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#slow_query_log[={0|1}]
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slow_query_log_file = /var/log/mysql/mariadb-slow.log
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long_query_time = 10
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#log_slow_rate_limit = 1000
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log_slow_verbosity = query_plan
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#log-queries-not-using-indexes
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#log_slow_admin_statements
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#
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# The following can be used as easy to replay backup logs or for replication.
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# note: if you are setting up a replication slave, see README.Debian about
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# other settings you may need to change.
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#server-id = 1
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#report_host = master1
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#auto_increment_increment = 2
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#auto_increment_offset = 1
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log_bin = /var/log/mysql/mariadb-bin
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log_bin_index = /var/log/mysql/mariadb-bin.index
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# not fab for performance, but safer
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#sync_binlog = 1
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expire_logs_days = 10
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max_binlog_size = 100M
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# slaves
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#relay_log = /var/log/mysql/relay-bin
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#relay_log_index = /var/log/mysql/relay-bin.index
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#relay_log_info_file = /var/log/mysql/relay-bin.info
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#log_slave_updates
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#read_only
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#
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# If applications support it, this stricter sql_mode prevents some
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# mistakes like inserting invalid dates etc.
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#sql_mode = NO_ENGINE_SUBSTITUTION,TRADITIONAL
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#
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# * InnoDB
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#
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# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
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# Read the manual for more InnoDB related options. There are many!
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default_storage_engine = InnoDB
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# you can't just change log file size, requires special procedure
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#innodb_log_file_size = 50M
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innodb_buffer_pool_size = {{ innodb_buffer_pool_size }}
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innodb_log_buffer_size = 8M
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innodb_file_per_table = 1
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innodb_open_files = 400
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innodb_io_capacity = 400
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innodb_flush_method = O_DIRECT
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innodb_buffer_pool_instances = {{ innodb_buffer_pool_instances }}
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aria_pagecache_buffer_size = {{ aria_pagecache_buffer_size }}
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#
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# * Security Features
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#
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# Read the manual, too, if you want chroot!
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# chroot = /var/lib/mysql/
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#
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# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
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#
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# ssl-ca=/etc/mysql/cacert.pem
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# ssl-cert=/etc/mysql/server-cert.pem
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# ssl-key=/etc/mysql/server-key.pem
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#
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# * Galera-related settings
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#
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[galera]
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# Mandatory settings
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#wsrep_on=ON
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#wsrep_provider=
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#wsrep_cluster_address=
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#binlog_format=row
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#default_storage_engine=InnoDB
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#innodb_autoinc_lock_mode=2
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#
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# Allow server to accept connections on all interfaces.
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#
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#bind-address=0.0.0.0
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#
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# Optional setting
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#wsrep_slave_threads=1
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#innodb_flush_log_at_trx_commit=0
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[mysqldump]
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quick
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quote-names
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max_allowed_packet = 16M
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[mysql]
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#no-auto-rehash # faster start of mysql but no tab completion
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[isamchk]
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key_buffer = 16M
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#
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# * IMPORTANT: Additional settings that can override those from this file!
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# The files must end with '.cnf', otherwise they'll be ignored.
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#
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!includedir /etc/mysql/conf.d/
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Block a user