Mysql5.7.13主从同步（复制）配置

主从同步是分布式mysql数据库相当重要的配置，现在我在虚拟机上完成主从配置，系统是CenterOS6.5，mysql版本是5.7.13

主服务器的ip是192.168.19.139 副服务器的ip是192.168.19.142

1.主服务器配置

(1)修改my.cnf(注意使用root)

 1 vim /etc/my.cnf
 2
 3
 4 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
 5 log-bin=mysqlbin-log
 6 server_id=1
 7 basedir=/home/mysql
 8 user=mysql
 9 datadir=/home/mysql/data
10 port=3306
11 innodb_flush_log_at_trx_commit=1
12 sync_binlog=1
13 log-slave-updates

(2)进入mysql安装目录下的bin，启动mysql

1 cd /home/mysql/bin 2 ./mysqld

(3)重开启mysql客户端，进入mysql安装目录下的bin，授权副服务器主从复制，用mysqld的好处是可以查看错误。

1 ./mysql -uroot -p 2 mysql> grant replication slave on *.* to [email protected]192.168.19.142 identified by ‘123‘;

(4)显示主服务器状态

1 mysql> show master status;
2 +---------------------+----------+--------------+------------------+-------------------+
3 | File                | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
4 +---------------------+----------+--------------+------------------+-------------------+
5 | mysqlbin-log.000019 |     1290 |              |                  |                   |
6 +---------------------+----------+--------------+------------------+-------------------+

2.副服务器配置

(1)修改my.cnf(注意使用root)

 1 vim /etc/my.cnf
 2
 3 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLE
 4 user=mysql
 5 server_id = 2
 6 replicate-do-db = sbfxd
 7 master-info-file = master.info
 8 relay-log = relay-relay-bin
 9 relay-log-index = relay-relay-bin.index
10 relay-log-info-file=relay-relay-log.info

(2)进入mysql安装目录下的bin，启动mysql

1 cd /home/mysql/bin 2 ./mysqld

(3)重开启mysql客户端，进入mysql安装目录下的bin，设置slave属性并开始服务

1 ./mysql -uroot -p
2 mysql> change master to master_host=‘192.168.19.139‘,master_port= 3306, master_log_file=‘mysqlbin-log.000019‘, master_log_pos= 1290, master_bind=‘‘;
3 mysql> start slave;

(4)显示副服务器的状态

 1 show slave status \G;
 2
 3             Slave_IO_State: Waiting for master to send event
 4                   Master_Host: 192.168.19.139
 5                   Master_User: test
 6                   Master_Port: 3306
 7                 Connect_Retry: 60
 8               Master_Log_File: mysqlbin-log.000019
 9           Read_Master_Log_Pos: 1290
10                Relay_Log_File: relay-relay-bin.000002
11                 Relay_Log_Pos: 323
12         Relay_Master_Log_File: mysqlbin-log.000019
13              Slave_IO_Running: Yes
14             Slave_SQL_Running: Yes
15               Replicate_Do_DB: sbfxd
16           Replicate_Ignore_DB:
17            Replicate_Do_Table:
18        Replicate_Ignore_Table:
19       Replicate_Wild_Do_Table:
20   Replicate_Wild_Ignore_Table:
21                    Last_Errno: 0
22                    Last_Error:
23                  Skip_Counter: 0
24           Exec_Master_Log_Pos: 1290
25               Relay_Log_Space: 530
26               Until_Condition: None
27                Until_Log_File:
28                 Until_Log_Pos: 0
29            Master_SSL_Allowed: No
30            Master_SSL_CA_File:
31            Master_SSL_CA_Path:
32               Master_SSL_Cert:
33             Master_SSL_Cipher:
34                Master_SSL_Key:
35         Seconds_Behind_Master: 0
36 Master_SSL_Verify_Server_Cert: No
37                 Last_IO_Errno: 0
38                 Last_IO_Error:
39                Last_SQL_Errno: 0
40                Last_SQL_Error:
41   Replicate_Ignore_Server_Ids:
42              Master_Server_Id: 1
43                   Master_UUID: 05408021-5ab2-11e6-869b-000c293990c1
44              Master_Info_File: /home/mysql/data/master.info
45                     SQL_Delay: 0
46           SQL_Remaining_Delay: NULL
47       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
48            Master_Retry_Count: 86400
49                   Master_Bind:
50       Last_IO_Error_Timestamp:
51      Last_SQL_Error_Timestamp:
52                Master_SSL_Crl:
53            Master_SSL_Crlpath:
54            Retrieved_Gtid_Set:
55             Executed_Gtid_Set:
56                 Auto_Position: 0
57          Replicate_Rewrite_DB:
58                  Channel_Name:
59            Master_TLS_Version:

出现两个yes表示slave可以跑了

3.注意事项：

(1)楼主的虚拟机是通过克隆产生的，所以不需要对mysql进行备份，然后在副服务器上恢复，这步对于数据库极其重要，否则就会出现如下错误:

1 2016-08-17T03:11:27.579193Z 5 [ERROR] Slave SQL for channel ‘‘: Error executing row event: ‘Table ‘sbfxd.sbtable‘ doesn‘t exist‘, Error_code: 1146
2 2016-08-17T03:11:27.584268Z 5 [Warning] Slave: Table ‘sbfxd.sbtable‘ doesn‘t exist Error_code: 1146

(2)如果将主服务器的属性配错了需要stop slave，然后设置好之后start slave