|
MariaDB Replication
2016/06/27 |
|
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.d/mariadb-server.cnf
[mysqld]
# add follows in [mysqld] section : get binary logs log-bin=mysql-bin # define server ID server-id=101
[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 3 Server version: 10.1.14-MariaDB MariaDB Server Copyright (c) 2000, 2016, 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)]>
MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.00 sec) exit Bye |
| [2] | If Firewalld is running on Master Host, allow service like follows. If you connect to read Slave Host, too, allow service on Slave Host, too. |
|
[root@dlp ~]# firewall-cmd --add-service=mysql --permanent success [root@dlp ~]# firewall-cmd --reload success |
| [3] | |
| [4] | Change settings on MariaDB Slave Host. |
|
[root@node01 ~]#
vi /etc/my.cnf.d/mariadb-server.cnf
[mysqld]
[root@node01 ~]# # 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=node01.srv.world systemctl restart mariadb |
| [5] | Get Dump-Data on MariaDB 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: 10.1.14-MariaDB MariaDB Server Copyright (c) 2000, 2016, 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 node01.srv.world:/tmp/ root@node01.srv.world's password: mysql_dump.sql 100% 515KB 514.7KB/s 00:00 |
| [6] | 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: 10.1.14-MariaDB MariaDB Server Copyright (c) 2000, 2016, 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=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: mariadb-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: 837
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)
|