Can't connect to MySQL server on (ip or domain name)

Question

I\'m trying to configure a web server (Debian 7). I followed this tutorial. I\'m renting my server thanks to gandi.net service. And i have now apache2, mysql, php5 up and runnin

Answer 1

If you do a normal install of MySQL on Debian, it will be configured to block external connections to the database.

This means that you still need to tell MySQL that external access is OK. To do this, you need to update the bind address for MySQL. This is configured in my.cnf, which, on Debian based systems, is located in /etc/mysql/my.cnf.

In there, find the section that says

[mysqld]

In there, you must make sure that

• the line skip-networking is either commented (comments start with a '#') or not there, and
• Bind-address is set to either 0.0.0.0 (which it is if there is no line bind-address) or to your server's IP-address.

After doing this, you should restart your MySQL service. Then you need to create a user that is allowed remote access. This can be done with a SQL query:

GRANT ALL ON yourdatabase.* TO youruser@'*' IDENTIFIED BY 'yourpassword';

You can switch out the asterisk for the IP-address you will connect from, if it's the same every time.

Finally , you need to open port 3306 (the port MySQL uses) on your firewall. This usually isn't neccesary as it is already open on most systems, but it can be done using the following iptables command.

/sbin/iptables -A INPUT -i eth0 -p tcp --destination-port 3306 -j ACCEPT
service iptables save

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