How can I force a MySQL table to become corrupted?

Posted by Rory McCann on Server Fault See other posts from Server Fault or by Rory McCann
Published on 2009-08-12T15:44:41Z Indexed on 2010/03/17 10:31 UTC
Read the original article Hit count: 464

Filed under:

mysql

|

nagios

|

monitoring

|

Corruption

|

linux

I have written a simple Nagios plugin that calls mysqlcheck (which checks for corrupted tables) and will give a warning if any are corrupt.

However none of my tables are corrupt now. So I'm not 100% sure that my plugin is working fine. I have a dev server that's not misson critical. How can I force one (or any) of the tables there to be corrupt so that I can test my nagios alert?

For the record the server is Ubuntu Dapper and the mysql is version 5.0

© Server Fault or respective owner

Related posts about mysql

How to remove MySQL completely with config and library files on ubuntu 12.04 gnome 3.0

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I tried everything till now: sudo apt-get remove mysql-server mysql-client mysql-common sudo apt-get purge mysql-server mysql-client mysql-common sudo apt-get autoremove and even more commands... But whenever I am trying to locate mysql. I get a no. of files related to mysql command: shell>>… >>> More
mysql: Cannot load from mysql.proc. The table is probably corrupted

as seen on Server Fault - Search for 'Server Fault'
Mysql was started: /usr/bin/mysqld_safe --datadir=/srv/mysql/myDB --log-error=/srv/mysql/logs/mysqld-myDB.log --pid-file=/srv/mysql/pids/mysqld-myDB.pid --user=mysql --socket=/srv/mysql/sockets/mysql-myDB.sock --port=3700 but when I'm trying to do something: ERROR 1548 (HY000) at line 1: Cannot… >>> More
Why is there a /etc/init.d/mysql file on this Slackware machine? How could it have gotten there?

as seen on Server Fault - Search for 'Server Fault'
A client of my IT-consulting service owns a web-development shop. He's been having problems with a Slackware 12.0 server running MySQL 5.0.67. The machine was set up by the client's sysadmin, who left on bad terms. My client no longer employs a sysadmin. As far as I can tell, the only copy of MySQL… >>> More
mysql: Bind on unix socket: Permission denied

as seen on Server Fault - Search for 'Server Fault'
Can't start mysql with: sudo /usr/bin/mysqld_safe --datadir=/srv/mysql/myDB --log-error=/srv/mysql/logs/mysqld-myDB.log --pid-file=/srv/mysql/pids/mysqld-myDB.pid --user=mysql --socket=/srv/mysql/sockets/mysql-myDB.sock --port=3700 120222 13:40:48 mysqld_safe Starting mysqld daemon with databases… >>> More
MySQL – Learning MySQL Online in 6 Hours – MySQL Fundamentals in 320 Minutes

as seen on SQL Authority - Search for 'SQL Authority'
MySQL is one of the most popular database language and I have been recently working with it a lot. Data have no barrier and every database have their own place. I have been working with MySQL for quite a while and just like SQL Server, I often find lots of people asking me if I have a tutorial which… >>> More

Related posts about nagios

Nagios Creating lots of zombie process

as seen on Server Fault - Search for 'Server Fault'
In my monitoring box, I have lots of zombie process created by nagios and they gets remove quickly also. I am using active checks to perform monitoring of my servers. I accumulated the defunct processes created using the following command: $ top -d 0.25 -b -n 20 > topout.txt This collected the… >>> More
Nagios: NRPE: Unable to read output, Can't find the reason, can you?

as seen on Server Fault - Search for 'Server Fault'
I have a Nagios server and a monitored server. On the monitored server: [root@Monitored ~]# netstat -an |grep :5666 tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN [root@Monitored ~]# locate check_kvm /usr/lib64/nagios/plugins/check_kvm [root@Monitored ~]#… >>> More
nagios NRPE: Unable to read output

as seen on Server Fault - Search for 'Server Fault'
I currently set up a script to restart my http servers + php5 fpm but can't get it to work. I have googled and have found that mostly permissions are the problems of my error but can't figure it out. I start my script using /usr/lib/nagios/plugins/check_nrpe -H bart -c restart_http This is the… >>> More
Nagios returns "No output returned from plugin" running process

as seen on Server Fault - Search for 'Server Fault'
I have a nagios server and a bunch of nagios clients that i currently monitor. All the clients are setup with the following nrpe configuration. check_users, check_load... metrics are successfully displayed on the nagios interface but check_nginx and check_server_proxy displayed as "Unknown"-(No output… >>> More
Error with Apache, Nagios and Snorby integration

as seen on Server Fault - Search for 'Server Fault'
I'm trying to use apache to serve two different websites (Nagios and Snorby). The problem is that when I try to see the "/snorby" website, apache sends me the "It works" page. If I try to access to "/nagios" it works perfectly. Snorby is running under ruby passenger .This are the config files. <VirtualHost… >>> More