roles/mariadb: rework to use Debian's mariadb

There are no MariaDB builds for Debian 13 (trixie) yet. This seems
to happen every new release. Surprisingly Debian's mariadb-server
is very new and we can simplify our tasks and templates a lot.

roles/mariadb/defaults/main.yml

@@ -1,15 +1,4 @@
 ---
-# ansible.builtin.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
@@ -22,10 +11,6 @@ mariadb_login_unix_socket: /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

roles/mariadb/tasks/main.yml

@@ -1,44 +1,4 @@
 ---
-- name: Check MariaDB package signing key
-  ansible.builtin.stat:
-    path: /etc/apt/keyrings/mariadb_release_signing_key.asc
-  register: mariadb_signing_key_stat
-  tags:
-    - packages
-    - mariadb
-
-- name: Download MariaDB package signing key
-  when: not mariadb_signing_key_stat.stat.exists
-  ansible.builtin.get_url:
-    url: https://mariadb.org/mariadb_release_signing_key.asc
-    dest: /etc/apt/keyrings/mariadb_release_signing_key.asc
-    owner: root
-    group: root
-    mode: "0644"
-  register: download_mariadb_signing_key
-  tags:
-    - packages
-    - mariadb
-
-- name: Add MariaDB 10.11 repo
-  ansible.builtin.apt_repository:
-    repo: deb [arch=amd64 signed-by=/etc/apt/keyrings/mariadb_release_signing_key.asc] https://dlm.mariadb.com/repo/mariadb-server/10.11/repo/debian {{ ansible_distribution_release
-      }} main
-    filename: mariadb
-    state: present
-  register: add_mariadb_apt_repository
-  tags:
-    - packages
-    - mariadb
-
-- name: Update apt cache
-  when: (download_mariadb_signing_key.status_code is defined and download_mariadb_signing_key.status_code == 200) or add_mariadb_apt_repository is changed
-  ansible.builtin.apt: # noqa no-handler
-    update_cache: true
-  tags:
-    - packages
-    - mariadb
-
 - name: Install mariadb-server
   ansible.builtin.apt:
     name: [mariadb-server, python3-pymysql]
@@ -46,10 +6,10 @@
     cache_valid_time: 3600
   tags: mariadb, packages
 
-- name: Create system my.cnf
+- name: Add MariaDB configuration overrides
   ansible.builtin.template:
-    src: my.cnf.j2
-    dest: /etc/mysql/my.cnf
+    src: 70-local.cnf.j2
+    dest: /etc/mysql/mariadb.conf.d/70-local.cnf
     owner: root
     group: root
     mode: "0644"

roles/mariadb/templates/70-local.cnf.j2

@@ -0,0 +1,10 @@
+{{ ansible_managed | comment }}
+
+[mysqld]
+# don't resolve connection IPs to hostnames (make sure user accounts are using
+# IPs instead of "localhost")
+skip-name-resolve=1
+max_connections		= {{ max_connections }}
+tmp_table_size		= {{ tmp_table_size }}
+max_heap_table_size	= {{ max_heap_table_size }}
+innodb_buffer_pool_size	= {{ innodb_buffer_pool_size }}

roles/mariadb/templates/my.cnf.j2

@@ -1,196 +0,0 @@
-{{ ansible_managed | comment }}
-
-# MariaDB database server configuration file.
-#
-# You can copy this file to one of:
-# - "/etc/mysql/my.cnf" to set global options,
-# - "~/.my.cnf" to set user-specific options.
-# 
-# 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.
-#
-# For explanations see
-# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
-
-# This will be passed to all mysql clients
-# It has been reported that passwords should be enclosed with ticks/quotes
-# escpecially if they contain "#" chars...
-# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
-[client]
-port		= 3306
-socket		= /run/mysqld/mysqld.sock
-
-# Here is entries for some specific programs
-# The following values assume you have at least 32M ram
-
-# This was formally known as [safe_mysqld]. Both versions are currently parsed.
-[mysqld_safe]
-socket		= /run/mysqld/mysqld.sock
-nice		= 0
-
-[mysqld]
-#
-# * Basic Settings
-#
-user		= mysql
-pid-file	= /run/mysqld/mysqld.pid
-socket		= /run/mysqld/mysqld.sock
-port		= 3306
-basedir		= /usr
-datadir		= /var/lib/mysql
-tmpdir		= /tmp
-lc_messages_dir	= /usr/share/mysql
-lc_messages	= en_US
-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		= 127.0.0.1
-
-# don't resolve connection IPs to hostnames (make sure user accounts are using
-# IPs instead of "localhost")
-skip-name-resolve=1
-#
-# * Fine Tuning
-#
-max_connections		= {{ max_connections }}
-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		= {{ tmp_table_size }}
-max_heap_table_size	= {{ max_heap_table_size }}
-#
-# * MyISAM
-#
-# This replaces the startup script and checks MyISAM tables if needed
-# the first time they are touched. On error, make copy and try a repair.
-myisam_recover_options = BACKUP
-key_buffer_size		= {{ key_buffer_size }}
-#open-files-limit	= 2000
-table_open_cache	= 400
-myisam_sort_buffer_size	= 512M
-concurrent_insert	= 2
-read_buffer_size	= 2M
-read_rnd_buffer_size	= 1M
-#
-# * Query Cache Configuration
-#
-query_cache_limit		= 128K
-query_cache_size		= {{ query_cache_size }}
-query_cache_type		= {{ query_cache_type }}
-#
-# * 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 logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
-#
-# we do want to know about network errors and such
-log_warnings		= 2
-#
-# Enable the slow query log to see queries with especially long duration
-#slow_query_log[={0|1}]
-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
-#log_slow_admin_statements
-#
-# 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
-#report_host		= master1
-#auto_increment_increment = 2
-#auto_increment_offset	= 1
-log_bin			= /var/log/mysql/mariadb-bin
-log_bin_index		= /var/log/mysql/mariadb-bin.index
-# not fab for performance, but safer
-#sync_binlog		= 1
-expire_logs_days	= 10
-max_binlog_size         = 100M
-# slaves
-#relay_log		= /var/log/mysql/relay-bin
-#relay_log_index	= /var/log/mysql/relay-bin.index
-#relay_log_info_file	= /var/log/mysql/relay-bin.info
-#log_slave_updates
-#read_only
-#
-# If applications support it, this stricter sql_mode prevents some
-# mistakes like inserting invalid dates etc.
-#sql_mode		= NO_ENGINE_SUBSTITUTION,TRADITIONAL
-#
-# * 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!
-default_storage_engine	= InnoDB
-# you can't just change log file size, requires special procedure
-#innodb_log_file_size	= 50M
-innodb_buffer_pool_size	= {{ innodb_buffer_pool_size }}
-innodb_log_buffer_size	= 8M
-innodb_file_per_table	= 1
-innodb_open_files	= 400
-innodb_io_capacity	= 400
-innodb_flush_method	= O_DIRECT
-
-aria_pagecache_buffer_size = {{ aria_pagecache_buffer_size }}
-#
-# * Security Features
-#
-# Read the manual, too, if you want chroot!
-# chroot = /var/lib/mysql/
-#
-# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
-#
-# ssl-ca=/etc/mysql/cacert.pem
-# ssl-cert=/etc/mysql/server-cert.pem
-# ssl-key=/etc/mysql/server-key.pem
-
-#
-# * Galera-related settings
-#
-[galera]
-# Mandatory settings
-#wsrep_on=ON
-#wsrep_provider=
-#wsrep_cluster_address=
-#binlog_format=row
-#default_storage_engine=InnoDB
-#innodb_autoinc_lock_mode=2
-#
-# Allow server to accept connections on all interfaces.
-#
-#bind-address=0.0.0.0
-#
-# Optional setting
-#wsrep_slave_threads=1
-#innodb_flush_log_at_trx_commit=0
-
-[mysqldump]
-quick
-quote-names
-max_allowed_packet	= 16M
-
-[mysql]
-#no-auto-rehash	# faster start of mysql but no tab completion
-
-[isamchk]
-key_buffer		= 16M
-
-#
-# * IMPORTANT: Additional settings that can override those from this file!
-#   The files must end with '.cnf', otherwise they'll be ignored.
-#
-!include /etc/mysql/mariadb.cnf
-!includedir /etc/mysql/conf.d/

roles/nginx/tasks/main.yml

@@ -1,12 +1,4 @@
 ---
-- name: Remove nginx apt signing key from apt-key
-  ansible.builtin.apt_key:
-    id: "053473772654754373614404074646527257655730117366337542"
-    state: absent
-  tags:
-    - packages
-    - nginx
-
 - name: Download nginx apt signing key
   ansible.builtin.get_url:
     url: https://nginx.org/keys/nginx_signing.key