mysqltuner command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

mysqltuner: command not found

or when using sudo you get the following error message

sudo: mysqltuner: command not found

Solutions to mysqltuner: command not found

How To Fix mysqltuner: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu mysqltuner is provided by mysqltuner package.

mysqltuner is:

High-performance MySQL tuning script written in perl that will provide you with a snapshot of a MySQL server?s health. Based on the statistics gathered, specific recommendations will be provided that will increase a MySQL server’s efficiency and performance. The script gives you automated MySQL tuning that is on the level of what you would receive from a MySQL DBA.

Features:

* Memory Usage: Calculates MySQL memory usage at max load and makes
  recommendations for increasing or decreasing the MySQL memory
  footprint. Per-thread and server-wide buffer data is calculated
  separately for an accurate snapshot of the server?s configuration.
* Slow Queries: Reviews the amount of slow queries relative to the
  total queries. Slow query time limits are also analyzed and
  recommendations are made.
* Connections: Current and historical connection counts are
  reviewed.
* Key Buffer: Takes configuration data and compares it to the actual
  indexes found in MyISAM tables. Key cache hit rates are calculated
  and variable adjustments are suggested.
* Query Cache: Query cache hit rates and usage percentages are used
  to make recommendations for the query cache configuration
  variables.
* Sorting & Joins: Per-thread buffers that affect sorts and joins
  are reviewed along with the statistics from the queries run
  against the server.
* Temporary Tables: Variable recommendations are made to reduce
  temporary tables that are written to the disk.
* Table Cache: Compares total tables opened to the currently open
  tables. Calculates the table cache hit rate in order to make
  suggestions.
* Open Files: Determines if the server will approach or run into the
  open file limit set by the operating system or the MySQL server
  itself.
* Table Locks: Finds table locking that forces queries to wait and
  makes suggestions for reducing locks that require a wait.
* Thread Cache: Calculates how many times MySQL must create a new
  thread to respond to a query.
* Aborted Connections: Finds applications that are not closing
  connections to MySQL properly.
* Read/Write Ratios: Calculates the percentage of read and write
  operations on your MySQL installation.

To fix this problem, we can install more using the command below.

sudo apt-get -y install mysqltuner

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install mysqltuner.

sudo apt -y install mysqltuner

Or if you have aptitude installed you can use the following command.

sudo aptitude install mysqltuner

Summary

In this tutorial we learn how to fix mysqltuner command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.