Check mysql-perf-metrics

Overview

Checks some performance related metrics and best practice configurations for MySQL/MariaDB. Logic is taken from MySQLTuner script, v1.9.8.

Hints:

• See additional notes for all mysql monitoring plugins
• Requires MySQL/MariaDB v5.5+.

Fact Sheet

Check Plugin Download	https://github.com/Linuxfabrik/monitoring-plugins/tree/main/check-plugins/mysql-perf-metrics
Check Interval Recommendation	Once a day
Can be called without parameters	Yes
Compiled for	Linux, Windows
Requirements	User with no privileges, locked down to 127.0.0.1 - for example monitoring\@127.0.0.1. Usernames in MySQL/MariaDB are limited to 16 chars in specific versions.
3rd Party Python modules	pymysql

Help

usage: mysql-perf-metrics [-h] [-V] [--always-ok]
                          [--defaults-file DEFAULTS_FILE]
                          [--defaults-group DEFAULTS_GROUP]
                          [--timeout TIMEOUT]

Checks some performance metrics and best practice configurations for
MySQL/MariaDB.

options:
  -h, --help            show this help message and exit
  -V, --version         show program's version number and exit
  --always-ok           Always returns OK.
  --defaults-file DEFAULTS_FILE
                        Specifies a cnf file to read parameters like user,
                        host and password from (instead of specifying them on
                        the command line), for example
                        `/var/spool/icinga2/.my.cnf`. Default:
                        /var/spool/icinga2/.my.cnf
  --defaults-group DEFAULTS_GROUP
                        Group/section to read from in the cnf file. Default:
                        client
  --timeout TIMEOUT     Network timeout in seconds. Default: 3 (seconds)

Usage Examples

./mysql-perf-metrics --defaults-file=/var/spool/icinga2/.my.cnf

Output:

Stat are updated during querying INFORMATION_SCHEMA [WARNING]. Set innodb_stats_on_metadata to OFF. Concurrent INSERTs are off [WARNING]. Set concurrent_insert to AUTO or ALWAYS. InnoDB File per table is not activated [WARNING]. Set innodb_file_per_table to ON.

States

• WARN if concurrent_insert is not set to AUTO or ALWAYS
• WARN if innodb_file_per_table is not set to ON
• WARN if innodb_stats_on_metadata is not set to OFF

Perfdata / Metrics

There is no perfdata.

Credits, License

• Authors: Linuxfabrik GmbH, Zurich

• License: The Unlicense, see LICENSE file.

• Credits:

  • heavily inspired by MySQLTuner (https://github.com/major/MySQLTuner-perl)