ervan:~# tail -f /var/log/blog

MySQL Master Slave Replication is one way to spread the load across multiple servers.Replication allows you to take one database, make an exact copy of it on another server, and set one of them (the slave) to take all its updates from the other (the master). Its just an one-way communication (Master to Slave), Slave just receiving any event or update from Master, so if Master updated Slave will automaticly updated but if the update did on Slave ofcourse Master is won’t updated. If you want update Multiple Server simultaneously each other, you must try MySQL Master Master Replication.

Master address 192.168.10.1
Slave address 192.168.10.2

Setup Master

linux:~# vi /etc/my.cnf
          log-bin=mysql-bin
          server-id=1
          binlog-ignore-db="mysql"

* Restart MySQL Master Service

linux:~# killall mysql mysqld mysqld_safe
linux:~# /usr/local/mysql/bin/mysqld_safe --user=mysql &

* Create an user on the Master server that allows replication on the Slave.

mysql> GRANT REPLICATION SLAVE ON *.* TO replicator@"192.168.10.2" IDENTIFIED BY 'password@@@';
mysql> flush privileges;
mysql> quit

* Export database that you want to put in the Slave server. (in this case, i want to export wordpress database)

linux:~# mysqldump -u root -p wordpress > wordpress.sql
Enter password :

* And then lets see the Master status

mysql> SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000002 |   141741 |              | mysql            |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
mysql> exit
Bye

Note the File row and Position row for use on the Slave server.

* Copy your exported database file to the Slave server.

linux # scp database.sql 192.168.10.2:/root/

Continue reading »

The first thing to do is backing up your database :

commands used :

mysqldump -u username -p databasename > filename.sql

After that login to your mysql databases,place where it belongs wordpress then select the database.

commands used :

mysql> UPDATE  wp_term_taxonomy,wp_terms SET wp_term_taxonomy.description = wp_terms.name WHERE wp_term_taxonomy.term_id = wp_terms.term_id