Sane defaults

[calind]

• https://tools.percona.com/wizard
• innodb
• utf8mb4 everywhere
• proper binnary logging (log slave updates, same binlog name)
  • http://mysqlhighavailability.com/mysql-8-0-3-defaults-story-binary-logging-log-bin-and-replication-chains-log-slave-updates-are-on/
• row based replication (safer replication)
  • https://dev.mysql.com/doc/refman/5.7/en/replication-features-functions.html
  • https://dev.mysql.com/doc/refman/5.7/en/replication-sbr-rbr.html
  • https://dev.mysql.com/doc/refman/5.7/en/replication-features-limit.html
  • https://dev.mysql.com/doc/refman/5.7/en/replication-options-binary-log.html#sysvar_binlog_rows_query_log_events
• gtid enabled
• start read-only

[calind]

# Generated by Percona Configuration Wizard (http://tools.percona.com/) version REL5-20120208
# Configuration name server-8 generated for calin.don@gmail.com at 2017-11-29 11:44:34

[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

# 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

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

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

# 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 = 2
innodb-file-per-table          = 1
innodb-buffer-pool-size        = 1456M

# 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

[calind]

Let's check again for them. Maybe write some tests.