How to Fix the 'PDOException SQLSTATE[HY000] [2002]: No such file or directory' Error in Laravel on Fortrabbit?

PDOException SQLSTATE[HY000] [2002]: Resolving the "No Such File or Directory" Error

Encountering the "PDOException SQLSTATE[HY000] [2002] No such file or directory" error while executing PHP Artisan commands on a Fortrabbit deployment can be frustrating. This error pertains to a MySQL connectivity issue, prompting us to explore various solutions.

One fundamental cause of this error is the non-running MySQL server. Verify that the server is indeed running. If it is, continue with the following recommendations:

Laravel 4:

• Modify the "host" value in app/config/database.php from "localhost" to "127.0.0.1".

Laravel 5 and above:

• Alter the "DB_HOST" value in the .env file from "localhost" to "127.0.0.1".

If these changes do not resolve the issue, consider modifying the "host" entry in /app/config/database.php (or "DB_HOST" in .env) to "127.0.0.1". While "localhost" is commonly used, it utilizes a UNIX socket that might encounter difficulty locating the database file. In contrast, "127.0.0.1" employs TCP, which operates through the local internet on the machine, offering improved reliability in this situation.

Understanding the underlying connection type differences is crucial. UNIX sockets may fail to access the database in the designated directory, while TCP provides a more reliable channel. Adjusting the "host" value to "127.0.0.1" allows us to leverage the advantages of TCP and potentially resolve the connectivity error faced during PHP Artisan command execution.

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