下面一起来了解下配置MySQL数据库主从同步交互式的操作方法,相信大家看完肯定会受益匪浅,文字在精不在多,希望配置mysql数据库主从同步交互式的操作方法这篇短内容是你想要的。
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一.my.cnf文件配置
1.修改my.cnf配置文件,主数据库3306要打开log-bin,server-id不能一样
[root@mysql ~]# egrep"log-bin|server-id" /data/{3306,3307}/my.cnf
/data/3306/my.cnf:log-bin =/data/3306/mysql-bin
/data/3306/my.cnf:server-id = 1
/data/3307/my.cnf:#log-bin =/data/3307/mysql-bin
/data/3307/my.cnf:server-id = 3
2.重启数据库3306和3307
[root@mysql ~]#/data/3306/mysql stop
[root@mysql ~]#/data/3306/mysql start
[root@mysql ~]#/data/3307/mysql stop
[root@mysql ~]#/data/3307/mysql start
3.进入主数据库3306,查询log_bin是否打开,server_id是多少
[root@mysql ~]# mysql -uroot-p123456 -S /data/3306/mysql.sock
mysql> show variables like"log_bin";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin | ON |
+---------------+-------+
1 row in set (0.01 sec)
mysql> show variables like"server_id";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id | 1 |
+---------------+-------+
1 row in set (0.00 sec)
4.创建一个专门用来同步数据库的用户
mysql> grant replicationslave on *.* to rep@'10.0.0.%' identified by '123456';
###*.*代表所有库和所有表
mysql> flush privileges;
mysql> select user,hostmysql.user;
mysql> show grants forrep@'10.0.0.%';
二.主库3306备份
mysql> flush table with readlock; //锁表,这时为只读,不能写,此时mysql窗口不能退出,退出则锁表会失败,超出默认的锁表时间会自动解锁
mysql> show variables like'timeout%'; //查看默认的锁表时间
mysql> show master status; //查看binlog位置
+------------------+----------+--------------+------------------+-----------------------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+-----------------------------------+
| mysql-bin.000004 | 328| | |
+------------------+----------+--------------+------------------+-----------------------------------+
1 row in set (0.00 sec)
[root@mysql ~]# mysqldump-uroot -p123456 -S /data/3306/mysql.sock -A -B|gzip >/opt/bak_$(date+%F).sql.gz //从新打开一个CRT窗口,进行备份
[root@mysql ~]# ls /opt
bak_2017-06-28.sql.gz
mysql> show master status; //备份数据后,再次查看binlog位置,确认这期间没有新数据写入
mysql> unlock tables; //解锁
三.把主库3306备份出来的数据还原到从库3307
1.登陆3307,确认logbin是关闭状态,server id与3306不冲突
[root@mysql ~]# mysql -uroot-p123456 -S /data/3307/mysql.sock
mysql> show variables like"log_bin";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin | OFF |
+---------------+-------+
1 row in set (0.01 sec)
mysql> show variables like"server_id";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id | 3 |
+---------------+-------+
1 row in set (0.00 sec)
2.将3306备份的数据还原到3307上
[root@mysql ~]# cd /opt
[root@mysql opt]# ls
bak_2017-06-28.sql.gz
[root@mysql opt]# gzip -dbak_2017-06-28.sql.gz
[root@mysql opt]# ls
bak_2017-06-28.sql
[root@mysql opt]# mysql -uroot-p123456 -S /data/3307/mysql.sock 3.登陆3307,执行以下命令,连接主库3306 [root@mysql opt]# mysql -uroot-p123456 -S /data/3307/mysql.sock mysql> CHANGE MASTER TO -> MASTER_HOST='10.0.0.20', -> MASTER_PORT=3306, -> MASTER_USER='rep', -> MASTER_PASSWORD='123456', -> MASTER_LOG_FILE='mysql-bin.000004', -> MASTER_LOG_POS=328; mysql> start slave; //从库3307开启主从复制开关 mysql> show slave status\G //检查同步状态 *************************** 1.row *************************** Slave_IO_State: Waiting formaster to send event Master_Host: 10.0.0.20 Master_User: rep Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000004 Read_Master_Log_Pos: 328 Relay_Log_File: relay-bin.000002 Relay_Log_Pos: 253 Relay_Master_Log_File: mysql-bin.000004 Slave_IO_Running:Yes //确认这两条是yes状态 Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: mysql 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: 328 Relay_Log_Space: 403 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 //复制过程中从库比主库延迟的秒数 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 1 row in set (0.00 sec) 或者这样检查同步状态 [root@mysql ~]# mysql -uroot-p123456 -S /data/3307/mysql.sock -e"show slave status\G"|egrep -i "running|_behind" //-e的作用是不需要登陆mysql交互敲入命令 Slave_IO_Running: Yes Slave_SQL_Running: Yes Seconds_Behind_Master: 0 查看线程状态 [root@mysql ~]# mysql -uroot -p123456 -S/data/3307/mysql.sock -e "show processlist\G" [root@mysql ~]# mysql -uroot -p123456 -S/data/3306/mysql.sock -e "show processl 四.测试 在主库3306上创建数据库,然后再登陆3307查看是否正常同步,经测试已正常同步^_^ 看完配置mysql数据库主从同步交互式的操作方法这篇文章后,很多读者朋友肯定会想要了解更多的相关内容,如需获取更多的行业信息,可以关注我们的行业资讯栏目。
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