1、主库上执行备份：

mysqldump  --single-transaction  --master-data=2  -uroot cjp>/tmp/back.sql

 

2、将备份传到从库上

 

3、从库上执行恢得

[root@mysqlslave ~]# mysql --socket=/data/3306/mysql.sock

mysql>create database cjp;

mysql>source /tmp/backup.sql

 

4、主库上建用户并授权

grant replication slave,replication client on *.* to repl@'%' identified by 'abcd';  

 

5、查看主从库上的各自server_id

mysql> show variables like '%server_id%';
+----------------+-------+
| Variable_name  | Value |
+----------------+-------+
| server_id      | 1     |
| server_id_bits | 32    |
+----------------+-------+
2 rows in set (0.00 sec)

 

mysql> show variables like '%server_id%' ; 
+----------------+-------+
| Variable_name  | Value |
+----------------+-------+
| server_id      | 3     |
| server_id_bits | 32    |
+----------------+-------+
2 rows in set (0.00 sec)


6、从库上开启同步

mysql> change master to
    -> master_host='10.xx.xx.xx',
    -> master_port=3306,
    -> master_user='repl',
    -> master_password='abcd',
    -> master_log_file='mysql-bin.000004',
    -> master_log_pos=1297
    -> ;
Query OK, 0 rows affected, 2 warnings (0.31 sec)

mysql> start slave;
Query OK, 0 rows affected (0.05 sec)

 

7、查看从库同步状态

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.xx.xx.xx
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000004
          Read_Master_Log_Pos: 1297
               Relay_Log_File: relay-bin.000002
                Relay_Log_Pos: 283
        Relay_Master_Log_File: mysql-bin.000004
             Slave_IO_Running: Yes                    
            Slave_SQL_Running: Yes                    
              Replicate_Do_DB:
          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: 1297
              Relay_Log_Space: 450
              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: de3c2952-4873-11e7-b0a4-000c298eeae9
             Master_Info_File: /data/3306/data/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)


8、验证（主库上建表或插入数据，从库查询正常）

 

 

完成！