MySQL module

The mysql module collects and parses the slow logs and error logs created by MySQL.

When you run the module, it performs a few tasks under the hood:

  • Sets the default paths to the log files (but don’t worry, you can override the defaults)
  • Makes sure each multiline log event gets sent as a single event
  • Uses ingest node to parse and process the log lines, shaping the data into a structure suitable for visualizing in Kibana
  • Deploys dashboards for visualizing the log data

Read the quick start to learn how to set up and run modules.

Compatibility

The mysql module was tested with logs from MySQL 5.5, 5.7 and 8.0, MariaDB 10.1, 10.2 and 10.3, and Percona 5.7 and 8.0.

On Windows, the module was tested with MySQL installed from the Chocolatey repository.

Configure the module

You can further refine the behavior of the mysql module by specifying variable settings in the modules.d/mysql.yml file, or overriding settings at the command line.

The following example shows how to set paths in the modules.d/mysql.yml file to override the default paths for slow logs and error logs:

- module: mysql
  error:
    enabled: true
    var.paths: ["/path/to/log/mysql/error.log*"]
  slowlog:
    enabled: true
    var.paths: ["/path/to/log/mysql/mysql-slow.log*"]

To specify the same settings at the command line, you use:

-M "mysql.error.var.paths=[/path/to/log/mysql/error.log*]" -M "mysql.slowlog.var.paths=[/path/to/log/mysql/mysql-slow.log*]"

Variable settings

Each fileset has separate variable settings for configuring the behavior of the module. If you don’t specify variable settings, the mysql module uses the defaults.

For more information, see Configure variable settings. Also see Override input settings.

When you specify a setting at the command line, remember to prefix the setting with the module name, for example, mysql.error.var.paths instead of error.var.paths.

error log fileset settings

var.paths
An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

slowlog fileset settings

var.paths
An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

Example dashboard

This module comes with a sample dashboard. For example:

kibana mysql

Fields

For a description of each field in the module, see the exported fields section.