4 Useful command line tools to monitor MySQL performance in Linux
There are many tools to monitor MySQL performance and troubleshoot a server, but in some cases they don’t always perfect match for a MySQL developer or administrator’s for their common needs, or may not work in some criteria, such as remote or over the web monitoring.
There are variety of open source tools created by MySQL community to fill the needs. Also, it’s very difficult to locate these tools via web searches, that’s the reason we’ve selected h 4 command line tools to monitor MySQL database uptime, load and performance in Linux servers.
Uptime means how long the database has been running and up since its last shutdown or restart. Getting information about uptime is very crucial in many situations, as it helps system administrators to check the status of MySQL database about, how many queries per second that MySQL database serves, threads, slow queries and lots of interesting statistics.
First let see what are the 4 command line tools
- Mytop
- Mtop
- Innotop
- mysqladmin
Let see one by one tools and their features.
Mytop
Mytop is one of my classic open source and free console-based (non-gui) monitoring tool for MySQL database was written by Jereme Zawodny using Perl language. Mytop runs in a terminal and displays statistics about threads, queries, slow queries, uptime, load, etc. in tabular format, much similar to the Linux top program. Which indirectly helps the administrators to optimize and improve performance of MySQl to handle large requests and decrease server load.
There are mytop packages available for various Linux distributions, such as Ubuntu, Fedora and CentOS. For more about installation instruction read: How to Install Mytop (MySQL Monitoring) in Linux
Mtop
mtop (MySQL top) is a another similar open source, command line based real time MYSQL Server monitoring tool, was written in Perl language that display results in tabular format much like mytop. mtop monitors MySQL queries which are taking the most amount of time to finish and kills those long running queries after certain specified time.
In addition, it also enable us to identify performance related problems, configuration information, performance statistics and tuning related tips from the command line interface. The two tools are very similar, but mtop is not actively maintained and may not work on newly installed MySQL versions.
Innotop
Innotop is a real time advanced command line based investigation program to monitor local and remote MySQL servers running under InnoDB engine. Innotop includes many features and comes with different types of modes/options, which helps us to monitor various aspects of MySQL performance to find out what’s wrong going with MySQL server.
mysqladmin
mysqladmin is a default command line MySQL client that comes pre-installed with MySQL package for performing administrative operations such as monitoring processes, checking server configuration, reloading privileges, current status, setting root password, changing root password, create/drop databases, and much more.
To check the mysql status as well as uptime run the following command from the terminal, and make sure you must have root permission to execute the command from the shell.
[root@localhost ~]# mysqladmin -u root -p version Enter password:
Output
mysqladmin Ver 8.42 Distrib 5.1.61, for redhat-linux-gnu on i386 Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Server version 5.6 -log Protocol version 10 Connection Localhost via UNIX socket UNIX socket /var/lib/mysql/mysql.sock Uptime: 2 days 54 min 30 sec Threads: 1 Questions: 149941143 Slow queries: 21 Opens: 752 Flush tables: 1 Open tables: 745 Queries per second avg: 86.607