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Optimiser MySql tuning

Jordi -

Optimiser les performances de MySQL

MySQLTuner est un script Perl qui effectue un audit  de vos bases de données MySQL. En résultat il fournit un tableau de bord simplifié se terminant par une liste d’indications de modifications du fichier de configuration de la base mysql : my.cnf
Par défaut le fichier de configuration de MySql a trés peu de chances de corrrespondre à votre serveur.

MySQLTuner vous « assiste » dans la configuration de votre serveur Mysql et propose des améliorations dans le but d’accroitre la stabilité et les performances du serveur. En quelques secondes, MySQLTuner affiche des statistiques sur votre serveur mysql et vous propose les options « qui vont bien ».

 

La documentation est orientée pour les utilisateurs de serveur Ubuntu. Elle est facilement transposable à d’autres systèmes d’exploitation.

Installer MySQLTuner

Ouvrir une console et exécuter les commandes suivantes :

Sur Debian


sudo apt-get install mysqltuner

Ou télécharger le script et le rendre exécutable

wget http://mysqltuner.com/mysqltuner.pl

chmod +x mysqltuner.pl

Pour lancer

sudo ./mysqltuner.pl

Utiliser l’application quelques heures

MySQLTuner se base sur des indicateurs de MySQL.
Il est donc nécessaire d’utiliser ses applications plusieurs heures afin que les optimisations préconisées soient efficaces.

Exécuter MySQLTuner

perl mysqltuner.pl

Auditer et améliorer les performances

 

Pour optimiser au mieux, il faut aussi utiliser tuning-primer, on a ainsi 2 outils pour une meilleure performance.

https://github.com/rackerhacker/MySQLTuner-perl

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