MySQL 5.7.13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CentOS6.5,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=1
basedir=/home/mysql
user=mysql
datadir=/home/mysql/data
port=3306
innodb_flush_log_at_trx_commit=1
sync_binlog=1
log-slave-updates

(2)进入mysql安装目录下的bin,启动mysql

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。

./mysql -uroot -p 2 mysql> grant replication slave on *.* to test@192.168.19.142 identified by '123';

(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.000019 |    1290 |              |                  |                  |
+---------------------+----------+--------------+------------------+-------------------+

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 = 2
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

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= 3306, master_log_file='mysqlbin-log.000019', master_log_pos= 1290, 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: 3306
                Connect_Retry: 60
              Master_Log_File: mysqlbin-log.000019
          Read_Master_Log_Pos: 1290
              Relay_Log_File: relay-relay-bin.000002
                Relay_Log_Pos: 323
        Relay_Master_Log_File: mysqlbin-log.000019
            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: 0
                  Last_Error:
                Skip_Counter: 0
          Exec_Master_Log_Pos: 1290
              Relay_Log_Space: 530
              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: 05408021-5ab2-11e6-869b-000c293990c1
            Master_Info_File: /home/mysql/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
          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
        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:

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