my-cluster.cnf

[mysql]

# CLIENT #
port                           = 3306
socket                         = /var/lib/mysql/mysql.sock

[mysqld]

# GENERAL #
user                           = mysql
default-storage-engine         = InnoDB
socket                         = /var/lib/mysql/mysql.sock
pid-file                       = /var/lib/mysql/mysql.pid

# SSL #
ssl-ca                         = /etc/ssl/mysql/ca.pem
ssl-cert                       = /etc/ssl/mysql/server-cert.pem
ssl-key                        = /etc/ssl/mysql/server-key.pem

# MyISAM #
key-buffer-size                = 32M
myisam-recover                 = FORCE,BACKUP

# SAFETY #
max-allowed-packet             = 16M
max-connect-errors             = 1000000
skip-name-resolve
sql-mode                       = STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ONLY_FULL_GROUP_BY
sysdate-is-now                 = 1
innodb                         = FORCE
innodb-strict-mode             = 1
innodb-autoinc-lock-mode       = 2
innodb-doublewrite             = 1
innodb_flush_log_at_trx_commit = 2
innodb_file_per_table          = 1

# DATA STORAGE #
datadir                        = /var/lib/mysql/

# BINARY LOGGING #
log-bin                        = /var/lib/mysql/mysql-bin
expire-logs-days               = 14
sync-binlog                    = 1
binlog-format                  = row

# CACHES AND LIMITS #
tmp-table-size                 = 32M
max-heap-table-size            = 32M
query-cache-type               = 0
query-cache-size               = 0
max-connections                = 500
thread-cache-size              = 50
open-files-limit               = 65535
table-definition-cache         = 4096
table-open-cache               = 4096

# INNODB #
innodb-flush-method            = O_DIRECT
innodb-log-files-in-group      = 2
innodb-log-file-size           = 128M
innodb-flush-log-at-trx-commit = 1
innodb-file-per-table          = 1
innodb-buffer-pool-size        = 128M

# LOGGING #
log-error                      = /var/lib/mysql/mysql-error.log
log-queries-not-using-indexes  = 1
slow-query-log                 = 1
slow-query-log-file            = /var/lib/mysql/mysql-slow.log

[mariadb]
wsrep_provider                 = /usr/lib/galera/libgalera_smm.so
wsrep_sst_method               = xtrabackup-v2

[sst]
streamfmt                      = xbstream
transferfmt                    = socat
progress                       = 1
tca                            = /etc/ssl/mysql/ca.pem
tcert                          = /etc/ssl/mysql/server-cert.pem
tkey                           = /etc/ssl/mysql/server-key.pem
encrypt                        = 3