Here's what I did. On the master, change /etc/my.cnf:

[mysqld]
server-id=1
log-bin=mysql-bin
innodb_flush_log_at_trx_commit=1
sync_binlog=1

Save and restart mysql, then log in.

>GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%' IDENTIFIED BY '123';
Mysql> flush table with read lock;//  Start copy data master (myisam) chuyển sang slave .
Mysql> show master status;

On the slave, change /etc/my.cnf.

[mysqld]
server-id=2
log-bin=mysql-bin
innodb_flush_log_at_trx_commit=1
sync_binlog=1

Save and restart mysql. Create a database on the slave (Snapshop master). Move data from master to slave.

Mysql> stop slave;
Mysql>CHANGE MASTER TO
MASTER_HOST='server2',
MASTER_USER='repl',
MASTER_PASSWORD='password',
MASTER_LOG_FILE='xxxx',
MASTER_LOG_POS=xxx;

On the master:

Mysql> unlock tables;

On the slave:

Mysql> start slave;
Mysql> show slave status /G

My problem is: I forget answer command belows.

Mysql> show master status;

when I start the slave. The error is

236 | Got fatal error 1236 from mast er when reading data from binary log: 'Could not find first log file name in binary log index file' |

What does the error mean, and how can I solve it?