Mariadb的主从复制
- mysql的扩展模式:主从
- 读写分离基于MHA实现
主服务器配置
*修改配置文件
[[email protected] ~]# vim /etc/my.cnf.d/server.cnf
[mysqld]server-id=1log-bin=master-loginnodb_file_per_table=ONskip_name_resolve=ON
- 启动mariadb服务
[[email protected] ~]# systemctl start mariadb [[email protected] ~]# mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 2 Server version: 5.5.44-MariaDB-log MariaDB Server Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others. Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. MariaDB [(none)]> show binary logs;+-------------------+-----------+| Log_name | File_size | +-------------------+-----------+| master-log.000001 | 245 | +-------------------+-----------+1 row in set (0.00 sec) MariaDB [(none)]> grant replication slave,replication client on *.* to ‘repluser‘@‘172.16.%.%‘ identified by ‘replpass‘; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> show binary logs;+-------------------+-----------+| Log_name | File_size | +-------------------+-----------+| master-log.000001 | 496 | +-------------------+-----------+1 row in set (0.00 sec) MariaDB [(none)]>
从服务器配置
- 修改配置文件
[[email protected] ~]# vim /etc/my.cnf.d/server.cnf
[mysqld]server-id=2relay-log=relay-loginnodb_file_per_table=ONskip_name_resolve=ON
- 启动服务器并授权
[[email protected] ~]# systemctl start mariadb[[email protected] ~]# mysqlWelcome to the MariaDB monitor. Commands end with ; or \g.Your MariaDB connection id is 2Server version: 5.5.44-MariaDB MariaDB Server Copyright (c) 2000, 2015, 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=‘172.16.80.6‘,master_user=‘repluser‘,master_password=‘replpass‘,master_log_file=‘master-log.000003,master_log_pos=496‘; Query OK, 0 rows affected (0.01 sec) MariaDB [(none)]>
- 授权完成后会生成两个文件
/var/lib/mysql/relay-log.info 该文件记录从主服务器的哪个日志开始复制
/var/lib/mysql/relay-master.info 该文件记录主服务器地址,账号密码信息
- 启动从服务器的复制功能
MariaDB [(none)]> start slave; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> show slave status\G;*************************** 1. row *************************** Slave_IO_State: Master_Host: 172.16.80.6 Master_User: repluser Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-log.000001,master_log_pos=496 Read_Master_Log_Pos: 4 Relay_Log_File: relay-log.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: master-log.000001,master_log_pos=496 Slave_IO_Running: No 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: 4 Relay_Log_Space: 245 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: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 1236 Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: ‘Could not find first log file name in binary log index file‘ Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1
此时,Slave_IO_Running,Slave_SQL_Running均应为yes,即可开始从主服务器上复制
主主模式
就是使用AB双服务器分别进行授权;
时间: 2024-10-29 04:12:59