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/mysql/mariadb.conf.d/50-server.cnf
# line 29: change to IP of this host
bind-address = 10.0.0.31
# line 74: uncomment and change to another ID
server-id = 101
# line 75: uncomment
log_bin = /var/log/mysql/mysql-bin.log
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 3
Server version: 10.1.23-MariaDB-9+deb9u1 Debian 9.0
Copyright (c) 2000, 2017, 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@node01:~# vi /etc/mysql/mariadb.conf.d/50-server.cnf
# line 29: change to IP of this host
bind-address = 10.0.0.51
# line 74: uncomment and change to another ID (different one from Master Host)
server-id = 102
# line 75: uncomment
log_bin = /var/log/mysql/mysql-bin.log
# line 80: add
# read only
read_only=1
# define own hostname
report-host=node01.srv.world (example master.gazduiredns.ro)
root@node01:~# systemctl restart mariadb[4] Get Dump-Data on Master Host.
root@www:~# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 4
Server version: 10.1.23-MariaDB-9+deb9u1 Debian 9.0
Copyright (c) 2000, 2017, 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 | 609 | | |
+------------------+----------+--------------+------------------+
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 debian@ns1.gazduiredns.ro:/tmp/
debian@ns1.gazduiredns.ro 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@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 4
Server version: 10.1.23-MariaDB-9+deb9u1 Debian 9.0
Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
# stop replication
MariaDB [(none)]> stop slave;
Query OK, 0 rows affected (0.00 sec)
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=609; # 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: 609
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 537
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: 609
Relay_Log_Space: 836
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
1 row in set (0.00 sec)