MariaDB 10.11 : Replication2024/02/02 |
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Configure MariaDB Replication. This is the general Primary/Replica setting. |
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| [1] |
On all Hosts, Install and Start MariaDB Server, refer to here. |
| [2] | Change settings and create a user for replication on MariaDB Primary Host. |
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root@www:~ #
vi /usr/local/etc/mysql/conf.d/server.cnf # line 18 : change to IP of this host bind-address = 10.0.0.31
# line 25 : add unique server ID server-id = 101
# line 26 : add the line log_bin = /var/log/mysql/mysql-bin.log
root@www:~ #
root@www:~ # service mysql-server restart
mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 3 Server version: 10.11.6-MariaDB FreeBSD Ports 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) root@localhost [(none)]> grant replication slave on *.* to replica@'%' identified by 'password'; Query OK, 0 rows affected (0.00 sec) root@localhost [(none)]> exit Bye |
| [3] | Change settings on Replica Host. |
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root@node01:~ #
vi /usr/local/etc/mysql/conf.d/server.cnf # line 18 : change to IP of this host bind-address = 10.0.0.51 # line 25 : add unique server ID (different one from Primary Host) server-id = 102 # line 26 : add follows log_bin = /var/log/mysql/mysql-bin.log read_only = 1 # specify this hostname report-host = node01.srv.worldroot@node01:~ # service mysql-server restart
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| [4] | Get Dump-Data on Primary Primary Host. After getting Data, transfer it to Replica Hosts with [sftp] or [rsync] and so on. |
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# create a directory and get Backup Data root@www:~ # mkdir /home/mariadb_backup root@www:~ # mariabackup --backup --target-dir /home/mariadb_backup -u root ..... ..... [00] 2024-02-02 14:29:53 ...done [00] 2024-02-02 14:29:53 Redo log (from LSN 49856 to 49872) was copied. [00] 2024-02-02 14:29:53 completed OK! |
| [5] | On Replica Host, Copy back Backup Data of Primary Host and Configure replication settings. After starting replication, verify replication works normally to create test database or insert test data and so on. |
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# stop MariaDB and remove existing data root@node01:~ # service mysql-server stop root@node01:~ # rm -rf /var/db/mysql/*
# transferred backup data root@node01:~ # ls -l mariadb_backup.tar.gz -rw-r--r-- 1 freebsd freebsd 696163 Feb 2 14:31 mariadb_backup.tar.gz root@node01:~ # tar zxvf mariadb_backup.tar.gz # run prepare task before restore task (OK if [completed OK]) root@node01:~ # mariabackup --prepare --target-dir /root/mariadb_backup ..... ..... 2024-02-02 14:33:26 0 [Note] InnoDB: End of log at LSN=49872 [00] 2024-02-02 14:33:26 Last binlog file , position 0 [00] 2024-02-02 14:33:26 completed OK! # run restore root@node01:~ # mariabackup --copy-back --target-dir /root/mariadb_backup ..... ..... [01] 2024-02-02 14:33:40 Copying ./test_database/test_table.frm to /var/db/mysql/test_database/test_table.frm [01] 2024-02-02 14:33:40 ...done [01] 2024-02-02 14:33:40 Copying ./xtrabackup_info to /var/db/mysql/xtrabackup_info [01] 2024-02-02 14:33:40 ...done [00] 2024-02-02 14:33:40 completed OK!
root@node01:~ #
chown -R mysql:mysql /var/db/mysql root@node01:~ # service mysql-server start # confirm [File] and [Position] value of logs of primary host root@node01:~ # cat /root/mariadb_backup/xtrabackup_binlog_info mysql-bin.000001 328 # set replication root@node01:~ # mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 4 Server version: 10.11.6-MariaDB-log FreeBSD Ports Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. # master_host = Primary Host IP address # master_user = replication user ID # master_password = replication user ID password # master_log_file = [File] value confirmed above # master_log_pos = [Position] value confirmed above root@localhost [(none)]> change master to master_host='10.0.0.31', master_user='replica', master_password='password', master_log_file='mysql-bin.000001', master_log_pos=328; Query OK, 0 rows affected (0.295 sec) # start replication root@localhost [(none)]> start slave; Query OK, 0 rows affected (0.00 sec) # show status root@localhost [(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: 328 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_Rewrite_DB: 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: 328 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: optimistic SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Slave_DDL_Groups: 0 Slave_Non_Transactional_Groups: 0 Slave_Transactional_Groups: 0 1 row in set (0.000 sec) |
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