How to quickly configure mysql master-slave synchronization in centos

Installation environment
Centos 1, 5.4
Mysql 5.1.xx is directly installed using rpm
Xtrabackup 1.2.22 directly installed with rpm
1. Master:/etc/my. cnf
[Mysqld] server-id = 1 log-bin innodb_flush_log_at_trx_commit = 1 sync_binlog = 1 datadir =/var/lib/mysql character-set-server = utf8 init_connect = 'set NAMES utf8' the default character set is utf8, you can select this configuration as needed.

2. Slave:/etc/my. cnf
[Mysqld] server-id = 2 datadir =/var/lib/mysql character-set-server = utf8 init_connect = 'set NAMES utf8'

3. Master: Set the slave user permissions for synchronization in the master database.
Grant replication slave on *. * TO '<slave_username>' @ '<slave_ip> 'identified BY' <slave_password> ';

4. Master: export data to slave
Xtrabackup is used to back up mysql. The advantage is that the lock table time on the master node is very short and can be used in the actual production environment. xtrabackup automatically records the location of the synchronization log file.

Sudo innobackupex-1.5.1 -- stream = tar/tmp/| ssh <slave_host> "mkdir/tmp/db; tar xfi--C/tmp/db/"this step will export and compress the master data, including the table structure, and copy the data to slave. At the same time, decompress the data to the/tmp/db directory of slave.

5. Slave: import data to slave
Innobackupex-1.5.1 -- apply-log/tmp/db innobackupex-1.5.1 -- copy-back/tmp/db chown-R mysql. mysql/var/lib/mysql /*

6. Slave: Start Data Synchronization
View/var/lib/mysql/xtrabackup_binlog_info to obtain the log file and position.

Change master to MASTER_HOST = '<master_host>', MASTER_USER = '<slave_username>', MASTER_PASSWORD = '<slave_password>', MASTER_LOG_FILE = '<see xtrabackup_binlog_info> ', MASTER_LOG_POS = <see xtrabackup_binlog_info>; start slave;