How to Monitor MySQL Using Mytop?
By manoj on April 5th, 2018
Mytop is an open source, command line tool which is used for monitoring MySQL performance. It is most similar to the Linux monitoring tool TOP. We can use Mytop to monitor MySQL real-time performance, uptime and queries and will also show the details of database users.
1) Log in to the server as root user via SSH.
2) Install EPEL repository using the below command.
# yum install epel-release
To verify the yum repository list updated or not we can use below command
# yum repolist
As we have updated the EPEL repository on the server install the Mytop package using the EPEL repository with the below command.
# yum install mytop –y
After the installation, we need to configure Mytop. We can configure the Mytop using the customized file .mytop to create the configuration file, open that file and add the below details to it.
To install Mytop please run the below command.
# apt-get install mytop
# vi ~/.mytop
Now we have successfully configured Mytop. You can also make changes to this configuration file depending on your needs. For example, the delay option specifies the amount of time in seconds between display refreshes.
If you enter delay=5 then monitor tab will refresh in every 5 seconds.
The idle parameter will allow sleeping threads to appear in the list in Mytop display screen. The default is to show idle threads. If you want to omit the idle threads then set idle=0, then the default sorting order is reversed so that the longest running queries appear at the top of the list.
Connecting to my Top
Below is the command used to check the performance of the mysql where –prompt is used to prompt the Mytop for the mysql database password. Enter the password then you can monitor the mysql.
# mytop –prompt
Now we will use the specific user to run the Mytop command
# mytop -u root –p
If you would like to monitor particular database, then use the -d option as shown below. For example, the below command will monitor database “db”.
# mytop –prompt -d db
You can also find more switches from the below command.
You should now have a good understanding of how to use Mytop to monitor your MySQL server. It is also a starting point for finding problem SQL queries and optimizing them, thus increasing the overall performance of the server.
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