mysql master-slave replication is believed to have used a lot, but because of his work has been how not used. Taking advantage of this period of time is relatively idle, also achieve their own again. Although there are a lot of similar articles on the Internet, but their implementation is still worth recording.
surroundings:
Master: centos 6.0 mysql 5.1.67-log IP : 192.168.0.107
from the server: centos 6.0 mysql 5.1.67-log IP : 192.168.0.109
primary database server test
CREATE TABLE `menber` (
`name` varchar(255) DEFAULT NULL default '',
`id` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;
insert into `menber` (`name`, `id`) values('zhangsan','1');
insert into `menber` (`name`, `id`) values('lisi','2');
insert into `menber` (`name`, `id`) values('王五','3');
mysql default configuration file, if not specified defaults to special /etc/my.cnf
mysql configuration file search order: /etc/my.cnf /etc/mysql/my.cnf ~ / .my.cnf
Configuration:
First, the primary server
1.1, create a replication user with permission replication slave.
mysql>grant replication slave on *.* to 'repl'@'192.168.0.109' identified by 'repl'; mysql>flush privileges;
1.2, edit my.cnf file
we /etc/my.cnf
Add to
server-id=107
Log-bin and open binary log file ( Mysql need / var / write permissions lib / mysql / directory by [chown -R mysql: change mysql / var / lib / mysql Syntax )
log-bin=/var/lib/mysql/mysql-bin
# Specify an absolute path, whether the person will appear mysql run the show master status; you can not view the log case when mysql> show master status; Empty the SET (0.00 sec) mysql> Show binary logs; ERROR 1381 (HY000): by You are not a using binary logging
Other extensions configuration items:
binlog-do-db = mysql1 # database name to be backed up, if the backup multiple databases, set this option to repeat
binlog-ignore-db = mysql2 # do not need to back up the database name, if the backup multiple databases, set this repeat option to
log-slave-updates = 1 # this parameter must be added, otherwise it will not give an updated binary files to record some
slave-skip-errors = 1 # to skip the error, continue with the copy operation (optional )
1.3, restart the mysql database
service mysqld restart
1.4, setting a read lock
mysql>flush tables with read lock;
1.5 to give binlog log file name and offset ( here remember the File Name and Position values need to use when behind the slave server configuration )
mysql> show master status; +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000001 | 713 | | | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec)
1.6, a backup of the database to be synchronized
mysqldump test > test.sql
1.7, Unlock
mysql>unlock tables;
Second, from the server (192.168.0.109)
Restore database data master (192.168.0.107) from the backup to the slave server (192.168.0.109)
2.1, edit my.cnf file
we /etc/my.cnf
Add to
server-id=109
2.2, restart from the database
service mysqld restart
2.3, corresponding to the set from the database
Note here that the value of the name and position of the logfile, the rest of the host, user and password-based account and password database settings
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)
mysql> change master to
-> master_host='192.168.0.107',
-> master_user='repl',
-> master_password='repl',
-> master_log_file='mysql-bin.000001',
-> master_log_pos=713;
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.107
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 1079
Relay_Log_File: mysqld-relay-bin.000004
Relay_Log_Pos: 251
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
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: 1079
Relay_Log_Space: 407
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:
1 row in set (0.00 sec)
ERROR:
No query specified
Here mainly to see:
Slave_IO_Running=Yes
Slave_SQL_Running=Yes
If the Slave_IO_Running: No or Slave_SQL_Running: NO, needs to be redone 2.3, corresponding to the set from the database
Third, the test:
After you configure the above items can be viewed on the master and slave thread state. On the master, you can see the connection of slave I / O thread is created: Enter the show processlist \ G on the master;
mysql> show processlist\G;
*************************** 1. row ***************************
Id: 4
User: root
Host: localhost
db: NULL
Command: Query
Time: 0
State: NULL
Info: show processlist
*************************** 2. row ***************************
Id: 19
User: repl
Host: 192.168.0.109:42337
db: NULL
Command: Binlog Dump
Time: 183
State: Has sent all binlog to slave; waiting for binlog to be updated
Info: NULL
2 rows in set (0.00 sec)
ERROR:
No query specified
3.1, in the primary database: 192.168.0.107 on adding new data
insert into `menber` (` name`) values ( 'Lee eight'); insert into `menber` (` name`) values ( 'Aoi');
3.2 from the database: View database on 192.168.0.109
MySQL> the SELECT * from menber; + ----------- + ---- + | name | the above mentioned id | + ----------- + ---- + | zhangsan | 1 | | lisi | 2 | | Wang Wu | 3 | | Lee eight | 4 | | Aoi | 5 | + ----------- + ---- + 5 rows in the SET (0.02 sec )
At this point the data has been successfully copied to the slave from the database 192.168.0.109.
