check_mysql_health

check_mysql_health copied to clipboard

check_mysql_health Nagios Plugin README

This plugin is used to monitor a variety of mysql database metrics.

• For instructions on installing this plugin for use with Nagios, see below. In addition, generic instructions for the GNU toolchain can be found in the INSTALL file.

• For major changes between releases, read the CHANGES file.

• For information on detailed changes that have been made, read the Changelog file.

• This plugin is self documenting. All plugins that comply with the basic guidelines for development will provide detailed help when invoked with the '-h' or '--help' options.

You can check for the latest plugin at: http://www.consol.com/opensource/nagios/check-mysql-health

The documentation in this README covers only the most common features. To view the full documentation and examples, go to http://www.consol.com/opensource/nagios/check-mysql-health or http://www.consol.de/opensource/nagios/check-mysql-health

Send mail to [email protected] for assistance. Please include the OS type/version and the Perl DBI/DBD version that you are using. Also, run the plugin with the '-vvv' option and provide the resulting version information. Of course, there may be additional diagnostic information required as well. Use good judgment.

For patch submissions and bug reports, please send me a mail. You can also find me at http://www.nagios-portal.de

How to "compile" the check_mysql_health script.

1. Run the configure script to initialize variables and create a Makefile, etc.

   ./configure --prefix=BASEDIRECTORY --with-nagios-user=SOMEUSER --with-nagios-group=SOMEGROUP --with-perl=PATH_TO_PERL --with-statefiles-dir=STATE_PATH

   a) Replace BASEDIRECTORY with the path of the directory under which Nagios is installed (default is '/usr/local/nagios') b) Replace SOMEUSER with the name of a user on your system that will be assigned permissions to the installed plugins (default is 'nagios') c) Replace SOMEGRP with the name of a group on your system that will be assigned permissions to the installed plugins (default is 'nagios') d) Replace PATH_TO_PERL with the path where a perl binary can be found. Besides the system wide perl you might have installed a private perl just for the nagios plugins (default is the perl in your path). e) Replace STATE_PATH with the directory where you want the script to write state files which transport information from one run to the next. (default is /tmp)

   Simply running ./configure will be sufficient to create a check_mysql_health script which you can customize later.

2. "Compile" the plugin with the following command:

   make

   This will produce a "check_mysql_health" script. You will also find a "check_mysql_health.pl" which you better ignore. It is the base for the compilation filled with placeholders. These will be replaced during the make process.

3. Install the compiled plugin script with the following command:

   make install

   The installation procedure will attempt to place the plugin in a 'libexec/' subdirectory in the base directory you specified with the --prefix argument to the configure script.

4. Verify that your configuration files for Nagios contains the correct paths to the new plugin.

Command line parameters

--hostname= This is what you would also use with tnsping and sqlplus.

--username= This is the user which reads the system tables.

--password= This is the user's password.

--mode= This parameter tells the plugin what it should check. The list of known modes may grow frequently. Please look at http://www.consol.com/opensource/nagios/check-mysql-health for a list of features.

--replication-user= This is the username used to authenticated mysql replication, this is useful with the longprocs mode where the replication users process is not counted as a longrunning process.

--warning= If the metric is out of this range, the plugin returns a warning.

--critical= If the metric is out of this range, the plugin returns a critical.

How to prepare the database for monitoring

GRANT USAGE ON . TO 'nagios'@'nagiosserver' IDENTIFIED BY 'nagiospassword';

That's it. If you have any problems or questions, feel free to send mail to [email protected]

Please do not send me a mail like this:

+-------------------------------------------------+ | I need monitor of database urgent. Please help. | | Suresh | +-------------------------------------------------+

I will answer you:

+-------------------------------------------------+ | A drumm Schelln konnst hom | | Gerhard | +-------------------------------------------------+