This is MariaDB (MySQL) checklist for setting up Master-Slave replication.

Master

• modify configuration (my.cnf)

  [mariadb]
  log-bin
  server_id=1
  log-basename=master1
  

• create/grant replication user

  CREATE USER 'replication_user'@'HOST' IDENTIFIED BY 'PASSWORD';
  GRANT REPLICATION SLAVE ON *.* TO 'replication_user'@'HOST';
  

• lock databases and find start position (do not exit mysql client until next step is completed !)

  FLUSH TABLES WITH READ LOCK;
  SHOW MASTER STATUS;
  +--------------------+----------+--------------+------------------+
  | File               | Position | Binlog_Do_DB | Binlog_Ignore_DB |
  +--------------------+----------+--------------+------------------+
  | mariadb-bin.000096 |      568 |              |                  |
  +--------------------+----------+--------------+------------------+
  

• copy data to slave using mysqldump

Slave

• modify configuration (my.cnf)

  [mariadb]
  server_id=100
  ## restrict only to this database (specify multiple times for multiple dbs)
  #replicate-do-db=db1
  ## ignore this database
  #replicate_ignore_db=db2
  ## skip CREATE USER errors
  slave_skip_errors=1396
  

• setup master using position data from master status

  CHANGE MASTER TO
    MASTER_HOST='MASTER-HOST',
    MASTER_USER='replication_user',
    MASTER_PASSWORD='PASSWORD',
    MASTER_PORT=3306,
    MASTER_LOG_FILE='mariadb-bin.000096',
    MASTER_LOG_POS=568,
    MASTER_CONNECT_RETRY=10;
  CHANGE MASTER TO MASTER_USE_GTID = current_pos;
  

• start slave

  START SLAVE;
  SHOW SLAVE STATUS; --- to check replication status