MariaDB Replication

MariaDB Replication 2015/03/23

	Configure MariaDB Replication settings. This configuration is general Master-Slave settings.
[1]	Change settings and create a user for replication on MariaDB Matser Host.

[root@www ~]#  vi /etc/my.cnf [mysqld] # add follows in [mysqld] section : get binary logs log-bin=mysql-bin # define server ID server-id=101 [root@www ~]#  systemctl restart mariadb  [root@www ~]#  mysql -u root -p  Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 2 Server version: 5.5.41-MariaDB-log MariaDB Server Copyright (c) 2000, 2014, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # create user (set any password for 'password' section) MariaDB [(none)]>  grant replication slave on *.* to replica@'%' identified by 'password';  Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]>  flush privileges;  Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]>  exit Bye

[2]	Install and start MariaDB Server on Slave Host, refer to here.
[3]	Change settings on Slave Host.

[root@repl01 ~]#  vi /etc/my.cnf [mysqld] # add follows in [mysqld] section : get binary logs log-bin=mysql-bin # define server ID (different one from Master Host) server-id=102 # read only read_only=1 # define own hostname report-host=repl01.server.world [root@repl01 ~]#  systemctl restart mariadb

[4]	Get Dump-Data on Master Host.

[root@www ~]#  mysql -u root -p  Enter password: Your MariaDB connection id is 3 Server version: 5.5.41-MariaDB-log MariaDB Server Copyright (c) 2000, 2014, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # lock all tables MariaDB [(none)]>  flush tables with read lock;  Query OK, 0 rows affected (0.00 sec) # show status (remember File, Position value) MariaDB [(none)]>  show master status;  +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000001 | 465 | | | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec) # remain the window above and open the another window and execute dump [root@www ~]#  mysqldump -u root -p --all-databases --lock-all-tables --events > mysql_dump.sql  Enter password: # back to the remained window and unlock MariaDB [(none)]>  unlock tables;  Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]>  exit Bye # transfer the dump to Slave Host [root@www ~]#  scp mysql_dump.sql repl01.server.world:/tmp/  root@repl01.server.world's password: mysql_dump.sql 100% 515KB 514.7KB/s 00:00

[5]	Configure replication settings on Slave Host. It's OK all, make sure the settings work normally to create databases on Master Host.

# import dump from Master Host [root@repl01 ~]#  mysql -u root -p < /tmp/mysql_dump.sql  Enter password: [root@repl01 ~]#  mysql -u root -p  Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 3 Server version: 5.5.41-MariaDB-log MariaDB Server Copyright (c) 2000, 2014, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]>  change master to      ->  master_host='10.0.0.31',     # Master Hosts's IP     ->  master_user='replica',     # replication ID     ->  master_password='password',     # replication ID's password     ->  master_log_file='mysql-bin.000001',     # File value confirmed on Master     ->  master_log_pos=465;     # Position value confirmed on Master Query OK, 0 rows affected (0.58 sec) # start replication MariaDB [(none)]>  start slave; Query OK, 0 rows affected (0.00 sec) # show status MariaDB [(none)]>  show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 10.0.0.31 Master_User: replica Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 536 Relay_Log_File: mariadb-relay-bin.000002 Relay_Log_Pos: 600 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 536 Relay_Log_Space: 896 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 101 1 row in set (0.00 sec)