Unable to access Plesk when MySQL/MariaDB database server service is stopped: SQLSTATE[HY000] [2002] No such file or directory

Symptoms

Plesk is not accessible:

PLESK_INFO: Server Error
500 Plesk\Exception\Database
DB query failed: SQLSTATE[HY000] [2002] No such file or directory
Type Plesk\Exception\Database
Message DB query failed: SQLSTATE[HY000] [2002] No such file or directory
File Mysql.php
Line 79

Cause

MySQL / MariaDB service is stopped:

# service mariadb status | grep Active
Active: inactive (dead) since ...

Resolution

1. Connect to your Plesk server via SSH.

2. Strat the database server service:

   • MariaDB:

     # service mariadb start

   • MySQL:

     # service mysql start