How to See the Current Maximum Allowed Connections in A Running MySQL Instance

To see the current maximum allowed connections (max_connections) in a running MySQL instance, you can connect to the MySQL server and execute the following SQL query:

SHOW VARIABLES LIKE 'max_connections';

You can use a MySQL client like the mysql command-line tool to execute the query. Open a terminal on your Ubuntu server and run the following command:

mysql -u username -p -e "SHOW VARIABLES LIKE 'max_connections';"

Replace username with your MySQL username. You will be prompted to enter your MySQL password.

The command will display the current value of the max_connections variable in the MySQL server configuration. It will show the maximum number of concurrent connections allowed by the server.

Note that if you don’t have the mysql command-line tool installed, you may need to install it first. You can do so using the following command:

sudo apt-get install mysql-client

Once you have the mysql client installed, you can execute the query to retrieve the current value of max_connections.