MySQL主从复制

CentOS7下安装MySQL，参考：https://www.cnblogs.com/silentdoer/articles/7258232.html

环境配置：

Master操作：
1.接入mysql并创建主从复制的用户
create user m2ssync identified by 'Qq123!@#';
2.给新建的用户赋权
GRANT REPLICATION SLAVE ON *.* TO 'm2ssync'@'%' IDENTIFIED BY 'Qq123!@#';
3.指定服务ID， 开启binlog日志记录， 在/etc/my.cnf中加入
server-id=137

#开启binlog日志
log-bin=dbstore_binlog

#binlog日志记录只做db_store这个db
binlog-do-db=db_store
4.通过SHOW MASTER STATUS;查看Master db状态

Slave操作：
1.指定服务器ID， 指定同步的binlog存储位置， 在/etc/my.cnf中加入
server-id=101
relay-log=slave-relay-bin
relay-log-index=slave-relay-bin.index
read_only=1

#slave只处理db_store的事件
replicate_do_db=db_store
2.接入slave的mysql服务，

在mysql下执行命令
change master to master_host='192.168.8.137',
master_port=3306,

master_user='m2ssync',

master_password='Qq123!@#',
master_log_file='dbstore_binlog.000002',
master_log_pos=369;

#master_log_file、master_log_pos分别是master通过SHOW MASTER STATUS;查询出来的File、Position
3.start slave;
4. show slave statusG ;查看slave服务器状态 

mysql> show slave statusG ;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.189.130
                  Master_User: m2ssync
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: dbstore_binlog.000002
          Read_Master_Log_Pos: 154
               Relay_Log_File: slave-relay-bin.000002
                Relay_Log_Pos: 325
        Relay_Master_Log_File: dbstore_binlog.000002
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: db_store
          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: 154
              Relay_Log_Space: 532
              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: 130
                  Master_UUID: 99c12a34-d9f2-11e8-97fc-000c29ebee73
             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 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: 
1 row in set (0.00 sec)

　看到两个yes说明配置成功，此时在master机器db_store库操作数据，slave同步数据成功

Slave_IO_Running: Yes
Slave_SQL_Running: Yes

参考文档：
https://www.cnblogs.com/silentdoer/articles/7258232.html
https://www.cnblogs.com/jirglt/p/3549047.html
https://blog.csdn.net/edwzhang/article/details/17226975