ansible-personal/roles/mariadb/defaults/main.yml

---
# file: roles/mariadb/defaults/main.yml
#
# Based on my running of mysqltuner.pl on a host with three WordPress databases
#

# default is 128MB but is a waste because it seems only the mysql table uses it
key_buffer_size: 8M

# default is 128MB but is a waste because it seems only information_schema uses
# AriaDB, see: https://mariadb.com/kb/en/mariadb/aria-system-variables
aria_pagecache_buffer_size: 8M

# default is 128M, but set to at least the size of your InnoDB data
innodb_buffer_pool_size: 256M

# Ansible 2.7.x with PyMySQL seems to default to TCP connection so we should
# force it to use a Unix socket.
# See: https://github.com/ansible/ansible/issues/47736
mariadb_login_unix_socket: /var/run/mysqld/mysqld.sock

# default is 100 but the max I've seen used is 5, so let's reduce it
max_connections: 33

# disable the query cache by default
query_cache_size: 0
query_cache_type: 0

# mysqltuner says we should use larger than 32M on our setup
tmp_table_size: 64M
max_heap_table_size: 64M

# vim: set ts=2 sw=2:
roles/mariadb: Manage /etc/mysql/my.cnf Set some sane defaults and manage the config file with a template. 2016-04-22 09:08:32 +02:00			`---`
			`# file: roles/mariadb/defaults/main.yml`
			`#`
			`# Based on my running of mysqltuner.pl on a host with three WordPress databases`
			`#`

			`# default is 128MB but is a waste because it seems only the mysql table uses it`
roles/mariadb: Reduce key buffer size mysqltuner.pl shows currently 6M out of 33M being used. 2020-12-29 09:58:12 +01:00			`key_buffer_size: 8M`
roles/mariadb: Manage /etc/mysql/my.cnf Set some sane defaults and manage the config file with a template. 2016-04-22 09:08:32 +02:00
			`# default is 128MB but is a waste because it seems only information_schema uses`
			`# AriaDB, see: https://mariadb.com/kb/en/mariadb/aria-system-variables`
			`aria_pagecache_buffer_size: 8M`

			`# default is 128M, but set to at least the size of your InnoDB data`
			`innodb_buffer_pool_size: 256M`

roles/mariadb: Use Unix socket for MariaDB tasks Otherwise Ansible fails due to PyMySQL using a TCP connection. See: https://github.com/ansible/ansible/issues/47736 2019-07-23 16:26:23 +02:00			`# Ansible 2.7.x with PyMySQL seems to default to TCP connection so we should`
			`# force it to use a Unix socket.`
			`# See: https://github.com/ansible/ansible/issues/47736`
			`mariadb_login_unix_socket: /var/run/mysqld/mysqld.sock`

roles/mariadb: Manage /etc/mysql/my.cnf Set some sane defaults and manage the config file with a template. 2016-04-22 09:08:32 +02:00			`# default is 100 but the max I've seen used is 5, so let's reduce it`
			`max_connections: 33`

roles/mariadb: Disable the query cache by default It seems that the usefulness of the query cache is diminishing in recent years. If your cache is large then the time taken to scan the cache can be longer than the SQL query itself. See: https://haydenjames.io/mysql-query-cache-size-performance/ 2020-12-29 10:07:33 +01:00			`# disable the query cache by default`
			`query_cache_size: 0`
			`query_cache_type: 0`

roles/mariadb: Tweak temp table size mysqltuner.pl said: When making adjustments, make tmp_table_size/max_heap_table_size equal 2020-12-29 10:10:31 +01:00			`# mysqltuner says we should use larger than 32M on our setup`
			`tmp_table_size: 64M`
			`max_heap_table_size: 64M`

roles/mariadb: Manage /etc/mysql/my.cnf Set some sane defaults and manage the config file with a template. 2016-04-22 09:08:32 +02:00			`# vim: set ts=2 sw=2:`