Why Can't I Connect to My MySQL Server (Error Code 2003)?

Can't Connect to MySQL Server: Error Code 2003

Issue:

When attempting to establish a connection to a MySQL server at '127.0.0.1' using the 'mysql' command, the following error occurs:

ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)

Solution:

For Ubuntu (without MySQL replication enabled):

1. Edit the file '/etc/mysql/my.cnf' using 'vim'.

2. Locate the line 'bind-address = 127.0.0.1' and comment it out by adding a '#' symbol at the beginning of the line:

   # bind-address = 127.0.0.1

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3. Save the file and restart the MySQL server.

For cases where MySQL replication is enabled:

Instead of connecting to 'localhost' or '127.0.0.1', specify the IP address for which the MySQL server is configured to bind to in the 'my.cnf' file.

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