Boost MySQL's performance by leveraging MySQL Tuner. Here's a comprehensive guide on enhancing MySQL on Linux systems.
MySQL Tuner
At times, the default MySQL configurations may not be the best fit for your setup. In most instances, you can enhance your MySQL performance by utilizing the MySQL Tuner.
The mysqltuner.pl script can be used to assess the MySQL status and provide optimization suggestions that could greatly boost performance.
Firstly, ensure your MySQL server has been operational for a minimum of 24 hours without any reboots, as mysqltuner requires as much data as possible.
1. Backup the current my.cnf file. The location varies from one Linux system to another.
Example:
cp /etc/my.cnf /etc/my.cnf_original
2. Download the script from https://mysqltuner.pl
wget -O mysqtuner.pl https://mysqltuner.pl
3. Make the downloaded file executable
chmod +x mysqltuner.pl
4. Execute it
./mysqltuner.pl
5. Thoroughly read the information generated by the scripts. Avoid simply copying and pasting any parameters displayed. If unsure, look up their meaning and potential harm if changes are incorrect. We advise against making changes to innodb log file sizes without researching how to do so. Most changes related to buffer and memory are safe to implement immediately.
6. Insert suggested parameters or modify existing ones in the current my.cnf file
nano /etc/my.cnf
Once done, press F2 and select "Y" when prompted
7. Reload the MySQL server (if possible, avoid restarting, just reload):
service mysqld restart
8. Let the system operate for at least another 24h
9. Evaluate server parameters, LA, wait%, cpu and memory usage.
10. If necessary, run the mysqltuner.pl script again to see if there are additional recommendations
