Troubleshooting ERROR 2003: Can't Connect to MySQL Server

This error occurs when attempting to connect to the MySQL server on '127.0.0.1', but the connection fails with the error "Can't connect to MySQL server on '127.0.0.1' (111)."

Solution for Ubuntu Users (without MySQL Replication)

If you're running Ubuntu, modify the bind-address parameter in the MySQL configuration file:

1. Open the my.cnf file using a text editor: vim /etc/mysql/my.cnf
2. Locate the bind-address = 127.0.0.1 line.
3. Comment out the line by adding a pound sign (#) in front of it.
4. Save and close the file.
5. Restart the MySQL server.

Solution for MySQL Replication Enabled

If MySQL replication is enabled, try connecting to the MySQL server using the specific IP address listed in the parameter bind-address in the my.cnf file. This IP address specifies the IP address on which the MySQL server is bound to listen for connections. Replace localhost or 127.0.0.1 with this IP address when attempting to connect.