Mysql5.6主从复制-基于binlog

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mb5fe55acf14b1a 2016-06-10 02:27:00

文章标签 mysql 5.6 主从复制 binlog 文章分类 代码人生

MySQL5.6开始主从复制有两种方式：基于日志（binlog）；基于GTID（全局事务标示符）。

此文章是基于日志方式的配置步骤

环境：

master数据库IP：192.168.247.128

slave数据库IP：192.168.247.130

mysql版本：5.6.14

1.修改master配置文件并重启服务：

[mysqld]

server-id=11

binlog-ignore-db=test #不记录binlog

replicate-ignore-db=test #不复制test库的binlog

log-bin=mysql-bin

binlog_cache_size = 1M

binlog_format=mixed

expire_logs_days=3

2.修改slave配置文件并重启服务：

[mysqld]

server-id=22

binlog-do-db = mydb

binlog-ignore-db=test #不记录binlog

replicate-ignore-db=test #不复制test库的binlog

log-bin=mysql-bin

binlog_cache_size = 1M

binlog_format=mixed

expire_logs_days=3

3.在master上建立用于复制的用户

mysql>grant replication slave, replication client on *.* to 'repl'@'192.168.247.130' identified by 'pwd';

4.备份master的数据

方法1：数据前先锁表，保证数据一致性

mysql> FLUSH TABLES WITH READ LOCK;

mysql> SHOW MASTER STATUS;

+—————–+————+—————-+——————–+

+—————–+————+—————-+——————–+

|mysql-bin.000015 | 1273 | | |

+—————–+————+—————-+——————–+

记录文件名和pos号

开始备份数据库

# mysqldump -uroot -p mydb > /tmp/mydb.sql

备份完毕，现在可以解锁数据库表

方法2：使用--lock-all-tables和--master-data参数结合，导出数据

# mysqldump -uroot -p --hex-blob --lock-all-tables -R --triggers --databases mydb --master-data=2 --default-character-set='utf8' --quick> /tmp/mydb.sql

5.拷贝备份文件到slave，并导入

#scp /tmp/mydb.sql

#mysql -uroot -p -B mydb </tmp/mydb.sql

6.在slave上同步binlog

mysql>

CHANGE MASTER TO MASTER_HOST='192.168.247.128',MASTER_USER='repl',MASTER_PASSWORD='pwd',MASTER_LOG_FILE='mysql-bin.000015',MASTER_LOG_POS=1273;

CHANGE MASTER TO MASTER_HOST='127.0.0.1',MASTER_USER='repl',MASTER_PASSWORD='P@$$w0rd',MASTER_PORT=5869,MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=349;

如果是方法2导出的数据，则通过以下语句查询binlog文件名和pos位置：

# grep -i "CHANGE MASTER TO" /tmp/mydb.sql

--CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000015', MASTER_LOG_POS=1273;

7.开启复制

mysql> START slave;

Query OK, 0 rows affected, 1 warning (0.00 sec)

8.查看slave状态

mysql> show slave status\G

*************************** 1. row ***************************

Slave_IO_State:

Master_Host: 192.168.247.128

Master_User: repl

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: mysql-bin.000015

Read_Master_Log_Pos: 1273

Relay_Log_File: DBtest1-relay-bin.000001

Relay_Log_Pos: 4

Relay_Master_Log_File: mysql-bin.000015

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: 1273

Relay_Log_Space: 120

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: 1593

Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work.

Last_SQL_Errno: 0

Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id: 1

Master_UUID:

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: 131210 19:04:04