Friday, June 21, 2013

How to Disable SELinux

Temporarily switch off enforcement
You can switch the system into permissive mode with the following command:

echo 0 >/selinux/enforce


more info:
 http://www.crypt.gen.nz/selinux/disable_selinux.html#DIS2

Sunday, June 02, 2013

Finding out largest tables on MySQL Server

http://www.mysqlperformanceblog.com/2008/02/04/finding-out-largest-tables-on-mysql-server/


SELECT CONCAT(table_schema, '.', table_name),CONCAT(ROUND(table_rows / 1000000, 2),
       'M')rows,CONCAT(ROUND(data_length / ( 1024 * 1024 * 1024 ), 2),'G')DATA,
       CONCAT(ROUND(index_length / ( 1024 * 1024 * 1024 ), 2), 'G')idx,
       CONCAT(ROUND(( data_length + index_length ) / ( 1024 * 1024 * 1024 ), 2), 'G')
       total_size,ROUND(index_length / data_length, 2)idxfrac
FROM   information_schema.TABLES
ORDER  BY data_length + index_length DESC
LIMIT  10;

Tuesday, May 14, 2013

Thursday, May 02, 2013