一、为mysql运营主库添加一个repl 账号
[root@zabbix_server ~]# mysql -uroot -p -S /var/lib/mysql/mysql.sock Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 15778982 Server version: 5.7.25 MySQL Community Server (GPL) Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. mysql>
mysql> grant replication slave,replication client on *.* to ‘repl‘@‘%‘ identified by ‘xxxxxxxxxx‘;
二、修改主库my.cnf
增加以下字段
server_id=IP+PORT 标识服务器ID
log-bin=master-221 设置log_bin日志文件名
binlog_format=row 指定日志格式为row
server_id=693306 log-bin=master-18-69 binlog_format=row
三、重启主库mysql
停止mysql实例
[root@server-1 ~]# mysqladmin -uroot -p -S /home/mysql-5.7.26/mysql.sock shutdown
重启mysql实例
[root@server-1 ~]# mysqld_safe --defaults-file=/etc/mysql/my.cnf &
进入mysql
[root@server-1 ~]# mysql -uroot -p -S /home/mysql-5.7.26/mysql.sock Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. mysql>
查看server_id变量
mysql> show variables like ‘%servier_id%‘; Empty set (0.01 sec) mysql> show variables like ‘%server_id%‘; +----------------+--------+ | Variable_name | Value | +----------------+--------+ | server_id | 693306 | | server_id_bits | 32 | +----------------+--------+ 2 rows in set (0.01 sec) mysql>
已经看到server_id变量已经成功设置。
四、修改从库my.cnf
添加server_id=IP+PORT
server_id=713306
五、重启mysql
[root@localhost mysql]# systemctl restart mysqld
[root@localhost mysql]#
进入mysql,查看server_id变量
[root@localhost data]# mysql -uroot -p -S /home/mysql-5.7.26/mysql.sock Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.7.26 MySQL Community Server (GPL) Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. mysql> show variables like ‘%server_id%‘; +----------------+--------+ | Variable_name | Value | +----------------+--------+ | server_id | 713306 | | server_id_bits | 32 | +----------------+--------+ 2 rows in set (0.01 sec) mysql>
已经变成我们设置值了，
六、接下来执行从库命令
mysql> change master to -> master_host=‘172.28.18.69‘, -> master_port=3306, -> master_user=‘repl‘, -> master_password=‘Zaq1xsw@‘, -> master_log_file=‘master-18-69.000001‘, -> master_log_pos=419; Query OK, 0 rows affected, 2 warnings (0.10 sec) mysql>
这里的 master_log_file和master_log_pos值，我们可以在主库上运行如下命令得到
mysql> show master status\G; *************************** 1. row *************************** File: master-18-69.000001 Position: 419 Binlog_Do_DB: Binlog_Ignore_DB: Executed_Gtid_Set: d24d8a53-880d-11e9-b1f3-842b2b5cdc15:1-7, ee3e292b-866b-11e9-9df8-14feb5dc2c77:1-23 1 row in set (0.00 sec) ERROR: No query specified mysql>
执行成功后，我们启动从库操作
mysql> start slave; Query OK, 0 rows affected (0.00 sec) mysql>
查询从库状态
mysql> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 172.28.18.69 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-18-69.000001 Read_Master_Log_Pos: 1593 Relay_Log_File: localhost-relay-bin.000002 Relay_Log_Pos: 1497 Relay_Master_Log_File: master-18-69.000001 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: 1593 Relay_Log_Space: 1708 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: 693306 Master_UUID: ee3e292b-866b-11e9-9df8-14feb5dc2c77 Master_Info_File: /home/mysql-5.7.26/data/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates 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: d24d8a53-880d-11e9-b1f3-842b2b5cdc15:1-79, ee3e292b-866b-11e9-9df8-14feb5dc2c77:1-15 Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) ERROR: No query specified mysql>
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
从库启动成功，同步成功
Exec_Master_Log_Pos: 1593
目前同步到主库数据库文件位置：1593
在主库上进入mysql，并查看主库状态
mysql> show master status\G; *************************** 1. row *************************** File: master-18-69.000001 Position: 1593 Binlog_Do_DB: Binlog_Ignore_DB: Executed_Gtid_Set: d24d8a53-880d-11e9-b1f3-842b2b5cdc15:1-7, ee3e292b-866b-11e9-9df8-14feb5dc2c77:1-23 1 row in set (0.00 sec) ERROR: No query specified mysql>
同样主库文件最后位置也是1593，说明从库同步设置完毕
原文：https://www.cnblogs.com/sky-cheng/p/12030598.html