MYSQL 主从配置

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遇到的报错（都是数据库版本不同导致的问题）

主数据库5.7 从5.1的

Slave_IO_Running: NO 第一个问题对应下面1

Slave_SQL_Running: No 第二个问题对应下面2

1、mysql同步复制抛Got fatal error 1236 Slave can not handle replication events with the checksum

这应该也是版本的问题

解决办法1：

master2的数据库换成5.6.12；

解决办法2：

在master1中设置binlog_checksum =none；

参数资料：http://blog.csdn.net/wantingtingting/article/details/41944047

2、当往MASTER数据库插数据的时候

SLVAE报错！！

Last_SQL_Errno: 1594

Last_SQL_Error: Relay log read failure: Could not parse relay log event entry.

虽然网上很多说stop slave；change master to master_log_file='mysql-bin.000001' ,master_log_pos=150;start slave; 有效

但是重新添加数据的时候又报错，应该是binarylog版本的问题了

没去看binarylog的版本先把从数据升级

-----------------------------------------------------------------------------开始配置------------------------------------------------------------------------------------

1、准备两台主机

主 - 本地IP：192.168.10.225

从 - 虚拟机：192.168.11.96

在主数据库创建一个新的用户用于同步 ‘rep‘；

从数据库我还是用root的用户

2、登录主数据库

创建新用户用于同步

CREATE USER 'rep'@'localhost' IDENTIFIED BY 'hello';

主数据库登录 rep 的账号

授予从数据库权限

GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.11.96'IDENTIFIED BY '123456' WITH GRANT OPTION;
flush privileges;

GRANT REPLICATION SLAVE ON *.* TO 'root'@192.168.11.96 IDENTIFIED BY '123456';
GRANT FILE,SELECT,REPLICATION SLAVE ON *.* TO 'root'@192.168.11.96 IDENTIFIED BY '123456';

备注：如果想要在Slave上有权限执行"LOAD TABLE FROM MASTER" 或 "LOAD DATA FROM MASTER"语句的话，必须授予全局的 FILE 和 SELECT 权限：
GRANT FILE,SELECT,REPLICATION SLAVE ON *.* TO 'root'@192.168.11.96 IDENTIFIED BY '123456';

3、配置主数据master 的my.cnf

[mysqld]
#master configure
server-id = 1
log-bin=mysql-bin
binlog-do-db=test
binlog-ignore-db=mysql
#master configure
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

4、备份master的数据库

导出要同步的数据库这里是test

由于master数据库是Windows的，直接手动导出，如果是linux的就方便点。。

在MASTER数据库主机

mysql> FLUSH TABLES WITH READ LOCK; //先锁表
# mysqldump -uroot -pmydb test >e:\mysql\test.sql
# scp test.sql 192.168.11.96:/tmp/ //注意路径问题

在SLAVE数据库从机

# mysql -uroot -p123456 test < /tmp/test.sql //记得先建好数据库test

成功后，将master 解表

mysql> UNLOCK TABLES;

5、在从机（192.168.11.96）上登录主机的数据库检验从机是否有权限

mysql -h192.168.10.225 -urep -phello
SHOW GRANTS;

会看到下面的，如果登录不了改下权限

mysql> SHOW GRANTS;
+-------------------------------------------------------------------------------------------------------------------------------------------+
| Grants for rep@192.168.11.96 |
+-------------------------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, FILE, REPLICATION SLAVE ON *.* TO 'rep'@'192.168.11.96' IDENTIFIED BY PASSWORD '*6B4F89A54E2D27ECD7E8DA05B4AB8FD9D1D8B119' |
+-------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

6、关键的步骤！！！

在master数据库 show master status；

在SLAVE数据库

mysql> CHANGE MASTER TO MASTER_HOST='192.168.11.225',MASTER_USER='rep',MASTER_PASSWORD='hello',MASTER_LOG_FILE='mysql-bin.000003',MASTER_LOG_POS=2110;

mysql> start slave;
mysql> SHOW SLAVE STATUS\G

*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.225
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 1864
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 526
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test
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: 1864
Relay_Log_Space: 696
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: df35b1ba-2321-11e7-be6c-00e04c12323b
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)

完成！！！！！！！！

有空再跑一遍！！！！

参考http://blog.csdn.net/xluren/article/details/10144165

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