MariaDB : Replication Setting2019/08/02 |
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Configure MariaDB Replication settings. This configuration is general Master-Slave setting.
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| [1] | Change settings and create a user for replication on MariaDB Matser Host. |
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root@www:~#
vi /etc/mysql/mariadb.conf.d/50-server.cnf # line 28: change to IP of this host bind-address = 10.0.0.31
# line 73: uncomment and change to any another ID server-id = 101
# line 74: uncomment log_bin = /var/log/mysql/mysql-bin.log
root@www:~#
root@www:~# systemctl restart mariadb
mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 12 Server version: 10.3.15-MariaDB-1-log Debian 10 Copyright (c) 2000, 2018, 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 |
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| [3] | Change settings on Slave Host. |
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root@node01:~#
vi /etc/mysql/mariadb.conf.d/50-server.cnf # line 28: change to IP of this host bind-address = 10.0.0.51
# line 73: uncomment and change to another ID(different one from Master Host) server-id = 102
# line 74: uncomment log_bin = /var/log/mysql/mysql-bin.log # line 79: add # read only read_only=1 # define own hostname report-host=node01.srv.world systemctl restart mariadb
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| [4] | Get Dump-Data on Master Host. |
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root@www:~# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 13 Server version: 10.3.15-MariaDB-1-log Debian 10 Copyright (c) 2000, 2018, 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 | 640 | | | +------------------+----------+--------------+------------------+ 1 row in set (0.001 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 debian@node01.srv.world:/tmp/ debian@node01.srv.world's password: mysql_dump.sql 100% 469KB 33.4MB/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. |
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# import dump from Master Host root@node01:~# mysql -u root -p < /tmp/mysql_dump.sql Enter password: root@node01:~# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 39 Server version: 10.3.15-MariaDB-1-log Debian 10 Copyright (c) 2000, 2018, 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=640; # Position value confirmed on Master Query OK, 0 rows affected (0.23 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: 640 Relay_Log_File: mysqld-relay-bin.000002 Relay_Log_Pos: 555 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: 640 Relay_Log_Space: 865 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 Master_SSL_Crl: Master_SSL_Crlpath: Using_Gtid: No Gtid_IO_Pos: Replicate_Do_Domain_Ids: Replicate_Ignore_Domain_Ids: Parallel_Mode: conservative SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it Slave_DDL_Groups: 0 Slave_Non_Transactional_Groups: 0 Slave_Transactional_Groups: 0 1 row in set (0.000 sec) |
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