mysql主从复制搭建

Posted 2020-08-27 focus

1、准备工作：

     准备一台主服务器，我的IP地址为192.168.13.138，和一台从服务器：192.168.13.137，数据库版本一致，主从库都建好相应的库和表；

2、修改主从服务器的mysql配置：    

　　#vi /etc/my.cnf
　　[mysqld]
　　log-bin=mysql-bin //[必须]启用二进制日志
　　server-id=222 //[必须]服务器唯一ID，取服务器IP最后一段

3、重启主从库的mysql服务：

     #service mysqld restart

4、在主服务器上创建mysql账户并授权给从服务器：

　　mysql>GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO [email protected]‘192.168.13.%‘ IDENTIFIED BY ‘repl‘;

5、查询master的状态：

　　mysql>show master status;　　

+------------------+----------+--------------+------------------+--------------- ----+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_ Set |
+------------------+----------+--------------+------------------+--------------- ----+
| mysql-bin.000001 | 329 | | | |
+------------------+----------+--------------+------------------+--------------- ----+

6、开放主服务器的mysql端口：

　 #firewall-cmd --add-port=3306/tcp

7、配置从服务器：

　　mysql>change master to master_host=‘192.168.13.138‘,master_user=‘repl‘,master_password=‘repl‘,
         　　master_log_file=‘mysql-bin.000001‘,master_log_pos=329;

　　mysql>start slave;

8、检查从服务器复制功能的状态：

　　mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.13.138
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 329
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 283
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: 329
Relay_Log_Space: 457
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: 138
Master_UUID: bd54c392-d746-11e6-8ea3-000c29fd50ed
Master_Info_File: /var/lib/mysql/master.info
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
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)