Applicable to:
- Plesk Onyx for Linux
Symptoms
- Websites or site's preview that use
php-fpmshow following errors:502 Bad Gatewayor504 Gateway Timeout; - In
/var/log/php-fpm/error.logor similar, the following record can be found:CONFIG_TEXT: NOTICE: Reloading in progress ...
OR
CONFIG_TEXT: AH01079: failed to make connection to backend: httpd-UDS / AH02454: FCGI: attempt to connect to Unix domain socket failed
- Website is using system PHP-FPM.
Cause
php-fpm
service is hanged or down.
Resolution
It is required to restart the service in case it hung. It is possible to do that via Plesk interface and via SSH.
Using Plesk interface
In Plesk interface, navigate to Tools & Settings > Services Management and restart the required PHP-FPM handler (the one that is assigned to the corresponding site):
Using SSH connection.
- Connect to the server via SSH;
- Restart PHP-FPM service:
# service php-fpm restart
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