MMM (Multi-Master Replication Manager for MySQL) is a set of flexible scripts to perform monitoring/failover and management of MySQL master-master replication configurations (with only one node writable at any time).

The toolset also has the ability to read balance standard master/slave configurations with any number of slaves, so you can use it to move virtual IP addresses around a group of servers depending on whether they are behind in replication.

The current version of this software is stable, but the authors would appreciate any comments, suggestions, bug reports about this version to make it… Read the rest

Error Code:

myisamchk: error: myisam_sort_buffer_size is too small
MyISAM-table ‘table.MYI’ is not fixed because of errors

Found link that points at 3255307777713450285 (outside data file) at 5452192
Found link that points at 4049971247778783536 (outside data file) at 5452292

… Read the rest

I try myisamchk fix my talbe

myisamchk -r -q tablename

But the table is bad yet.

frm file only a table struct. So I create a same struct’s new table and copy the new frm file and overwrite bad frm file.

Exciting the bad table is restored.

Assuming such a situation, you are a company mysql-DBA, one day all of a sudden the company database was artificially deleted.

Despite the backup, but the service is stopped due to damage caused tens of millions, and now companies need to find out that people who do the delete operation.

However, permission to have database operations a lot of people, how to troubleshoot, Where is the evidence?

Is not that powerless?

mysql itself does not operate the audit function, it is not the means in which case nothing with it?

This article will discuss a simple, ideas for… Read the rest

The issue that we encountered was that some statistics like the InnoDB buffer pool activity were not displaying anything for one server. Other servers were displaying it… Read the rest

First login trough SSH on your server and get access to you mysql

$mysqladmin -u xxx password  xxx

Note: the db user and db passwd are your database username and database password

GRANT ALL PRIVILEGES ON db_base.* TO db_user @’%’ IDENTIFIED BY ‘db_passwd’;

You can also grant accesss to a specific IP adress

GRANT ALL PRIVILEGES ON failserv_example.* TO failserver@’xx.xx.xx.xx’ IDENTIFIED BY ‘db_passwd’;

(where x is your own remote IP)

Refresh privileges,After that to activate your setting type

FLUSH PRIVILEGES;

… Read the rest

Error Log:
Could not increase number of max_open_files to more than 2048 (request: 3082)

Othre Error:

ERROR 1135: Can’t create a new thread (errno 11). If you are not out of available memory, you can consult the manual for a possible OS-dependent bug

How to repeat:
Run the server … Read the rest

#!/bin/sh
###################################################################
# Name:Mysql_Full_Backup.sh
# PS:MySQL DataBase Full Backup.
# Write by:Jason
# Last Modify:2009-11-20
###################################################################

# Define Variable Please Modify By Fact
# Define Script Directory
scriptsDir=/home/Script

# Define Database Directory
mysqlDir=/srv/mysql

# Define Database User & Name
user=bkuser
userPWD=pwd

# Define Backup Directory
dataBackupDir=/home/mysqlbackup

# Define Email Content
eMailFile=$dataBackupDir/email.txt

# Define Email Address
eMail=xxxx@mail.com

# Define Backup Log File.
logFile=$dataBackupDir/mysqlbackup.log
DATE=`date -I`

echo "" > $eMailFile… Read the rest