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)

 vim /etc/my.cnf

 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
 log-bin=mysqlbin-log
 server_id=
 basedir=/home/mysql
 user=mysql
 datadir=/home/mysql/data
 port=
 innodb_flush_log_at_trx_commit=
 sync_binlog=
 log-slave-updates

(2)进入mysql安装目录下的bin，启动mysql

cd /home/mysql/bin ./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。

./mysql -uroot -p mysql> grant replication slave on *.* to test@192.168.19.142 identified by '';

(4)显示主服务器状态

 mysql> show master status;
 +---------------------+----------+--------------+------------------+-------------------+
 | File                | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
 +---------------------+----------+--------------+------------------+-------------------+
 | mysqlbin-log. |      |              |                  |                   |
 +---------------------+----------+--------------+------------------+-------------------+

2.副服务器配置

(1)修改my.cnf(注意使用root)

 vim /etc/my.cnf

 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLE
 user=mysql
 server_id =
 replicate-do-db = sbfxd
 master-info-file = master.info
 relay-log = relay-relay-bin
 relay-log-index = relay-relay-bin.index
 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

 ./mysql -uroot -p
 mysql> change master to master_host='192.168.19.139',master_port= , master_log_file='mysqlbin-log.000019', master_log_pos= , master_bind='', master_user='test',master_password='123';
 mysql> start slave;

(4)显示副服务器的状态

 show slave status \G;

             Slave_IO_State: Waiting for master to send event
                   Master_Host: 192.168.19.139
                   Master_User: test
                   Master_Port:
                 Connect_Retry:
               Master_Log_File: mysqlbin-log.
           Read_Master_Log_Pos:
                Relay_Log_File: relay-relay-bin.
                 Relay_Log_Pos:
         Relay_Master_Log_File: mysqlbin-log.
              Slave_IO_Running: Yes
             Slave_SQL_Running: Yes
               Replicate_Do_DB: sbfxd
           Replicate_Ignore_DB:
            Replicate_Do_Table:
        Replicate_Ignore_Table:
       Replicate_Wild_Do_Table:
   Replicate_Wild_Ignore_Table:
                    Last_Errno:
                    Last_Error:
                  Skip_Counter:
           Exec_Master_Log_Pos:
               Relay_Log_Space:
               Until_Condition: None
                Until_Log_File:
                 Until_Log_Pos:
            Master_SSL_Allowed: No
            Master_SSL_CA_File:
            Master_SSL_CA_Path:
               Master_SSL_Cert:
             Master_SSL_Cipher:
                Master_SSL_Key:
         Seconds_Behind_Master:
 Master_SSL_Verify_Server_Cert: No
                 Last_IO_Errno:
                 Last_IO_Error:
                Last_SQL_Errno:
                Last_SQL_Error:
   Replicate_Ignore_Server_Ids:
              Master_Server_Id:
                   Master_UUID: -5ab2-11e6-869b-000c293990c1
              Master_Info_File: /home/mysql/data/master.info
                     SQL_Delay:
           SQL_Remaining_Delay: NULL
       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
            Master_Retry_Count:
                   Master_Bind:
       Last_IO_Error_Timestamp:
      Last_SQL_Error_Timestamp:
                Master_SSL_Crl:
            Master_SSL_Crlpath:
            Retrieved_Gtid_Set:
             Executed_Gtid_Set:
                 Auto_Position:
          Replicate_Rewrite_DB:
                  Channel_Name:
            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:

 --17T03::.579193Z  [ERROR] Slave SQL for channel '': Error executing row event: 'Table 'sbfxd.sbtable' doesn't exist', Error_code: 1146
 --17T03::.584268Z  [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