Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

How to test which port MySQL is running on and whether it can be connected to?

To find a listener on a port, do this:

netstat -tln

You should see a line that looks like this if mysql is indeed listening on that port.

tcp        0      0 127.0.0.1:3306              0.0.0.0:*                   LISTEN      

Port 3306 is MySql's default port.

To connect, you just have to use whatever client you require, such as the basic mysql client.

mysql -h localhost -u user database

Or a url that is interpreted by your library code.


Using Mysql client:

mysql> SHOW GLOBAL VARIABLES LIKE 'PORT';

grep port /etc/mysql/my.cnf ( at least in debian/ubuntu works )

or

netstat -tlpn | grep mysql

verify

bind-address 127.0.0.1

in /etc/mysql/my.cnf to see possible restrictions


netstat -tlpn

It will show the list something like below:

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1393/sshd
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1859/master
tcp        0      0 123.189.192.64:7654     0.0.0.0:*               LISTEN      2463/monit
tcp        0      0 127.0.0.1:24135         0.0.0.0:*               LISTEN      21450/memcached
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      16781/mysqld

Use as root for all details. The -t option limits the output to TCP connections, -l for listening ports, -p lists the program name and -n shows the numeric version of the port instead of a named version.

In this way you can see the process name and the port.


Donate For Us

If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!