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Version: 23.04

Monitor a MySQL or MariaDB database

The objective of this tutorial is to monitor a Mysql/MariaDB database.

Prerequisites​

On the database your want to monitor​

In order to be able to collect the necessary information from the database, a database user with specific privileges is required. If the database you want to monitor is a Centreon database, a dedicated user already exists and is called centreon. Otherwise, start by creating a new user: log in to your database, then run the following command:

CREATE USER 'username'@'IP_POLLER' IDENTIFIED BY 'password';

Then, whether your database is a Centreon database or not, run the following command:

GRANT SELECT ON *.* TO 'username'@'IP_POLLER';

Replace the username, the IP address of the poller and the password by the values you want.

On the poller​

Install the following plugin on the poller that will monitor your database:

dnf install centreon-plugin-Applications-Databases-Mysql

On the central server​

The database will be monitored using the MySQL/MariaDB Monitoring Connector. Go to the menu Configuration > Monitoring Connector Manager and install the MySQL/MariaDB Monitoring Connector:

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Set up the host and deploy the configuration​

  1. Go to Configuration > Hosts > Hosts and click on Add:

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  2. Fill in the following information:

  • The name of your server
  • A description of your server
  • Its IP address
  • Select the poller that will monitor the database (leave "Central" if you have no other poller)

  1. Click on the + Add New Entry button for the Templates field and select the App-DB-MySQL-custom template:

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  2. A list of macros matching the template will appear:

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    Fill in the value of following macros:

  • MYSQLUSERNAME: the name of the user that will connect to the database.
  • MySQLPASSWORD: the password associated with this user.
  • MySQLPORT: the listening port of the database, by default 3306.

  1. Click on Save. Your equipment has been added to the list of hosts:

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  2. Go to Configuration > Services > Services by host. A set of indicators has been deployed automatically:

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  3. Deploy the configuration.

  4. Go to Monitoring > Status Details > Services and select All for the Service Status filter. At first, the resources appear with the status Pending, which means that no checks have been executed yet. After a few minutes, the first results of the monitoring appear:

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