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MySQL5.7主從復制-異步復制搭建

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兩臺服務器,系統是Redhat6.5,MySQL版本是5.7.18。
1、在主庫上,創建復制使用的用戶,並授予replication slave權限。這裏創建用戶repl,可以從IP為10.10.10.210的主機進行連接。
grant replication slave on *.* to ‘repl‘@‘10.10.10.210‘ identified by ‘mysql‘;

2、修改主服務器配置,加入如下配置:
cat /etc/my.cnf
[mysqld]
server-id=1
log-bin=mysql-bin
log-bin-index=mysql-bin.index
binlog_format=mixed

3、在主庫上,設置讀鎖,確保沒有數據操作,獲得一個一致性的快照
flush tables with read lock;

4、然後在主庫上獲得當前二進制日誌名和偏量值,改操作的目的是從庫啟動之後,從這個點開始恢復數據。
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000006 | 120 | | | |
+------------------+----------+--------------+------------------+-------------------+

5、利用mysqldump導出數據,拷貝至從庫服務器。

6、主庫備份完成,恢復寫操作
unlock tables;

7、修改從庫的配置文件,添加如下參數,註意server-id必須是唯一的,不能和主庫相同,多個從庫的話,server-id不能有重復。
cat /etc/my.cnf
[mysqld]
server-id=2

8、在從庫上,使用--skip-slave-start啟動數據庫,這樣不會立即啟動從庫上的復制進程,方便我們進行下一步配置。
./bin/mysqld_safe --skip-slave-start &

9、對從庫進行配置,指定復制使用的用戶,主庫的IP、端口以及開始執行復制的日誌文件和位置等:
change master to
master_host=‘10.10.10.200‘,
master_port=3306,
master_user=‘real‘,
master_password=‘mysql‘,
master_log_file=‘mysql-bin.000006‘,
master_log_pos=120;

10、在從庫上啟動slave線程
start slave;

11、在從庫上查看slave狀態
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.10.10.200
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000006
Read_Master_Log_Pos: 120
Relay_Log_File: mysql-relay-bin.000026
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000006
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: 120
Relay_Log_Space: 619
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: 1
Master_UUID: 4adfcd1d-4059-11e7-9532-080027d597f9
Master_Info_File: mysql.slave_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
12、在主庫進行DDL或者DML測試,在從庫查看數據同步情況

原文鏈接:http://blog.itpub.net/30135314/viewspace-2144710/

MySQL5.7主從復制-異步復制搭建