Error 500 with nothing in the logs

Nicola Urbinati

• August 07, 2018 16:52

Hi, I'm experiencing an Error 500 on my Joomla site (only by the frontend, the backend is working flawlessly). I do not find any errors anywhere I can get to: /home/user/logs (defaut for Easyapache right?) /public_html/logs (Joomla's own logs) cPanel/Errors. All other sites are working fine (both Joomla, Worpress, even a Dolibarr one) Is there any other place I can find logs? Anyone has any clue on this? Thanks.

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  Nicola Urbinati

  • August 07, 2018 21:56

  Well, it was apparently somethig about security, as it's working again now, without my intervention... Can some of cPanel/WHM security engines throw that behaviour on a site? Where can I look for the right incident?

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  Nicola Urbinati

  • August 07, 2018 22:23

  Ok, found it: it was a low PHP memory_limit Having no tip from the logs caused me an headache ;)

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  cPanelMichael

  • August 08, 2018 17:24

  k, found it: it was a low PHP memory_limit Having no tip from the logs caused me an headache

  
  Hello @Nicola Urbinati, I'm glad to see you were able to determine the cause of the issue. Generally, PHP errors are logged to the error_log file located in the document root of the domain name that was accessed when the error was generated. Do you see an error_log file in the document root of the affected website? If not, can you verify which PHP handler is assigned to the domain? Thank you.

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  Nicola Urbinati

  • August 08, 2018 18:06

  The handler should be suPHP (7.2) with FPM (as noted in MultiPHP Manager, even if my other sources like the system information page in joomla say: Server API FPM/FastCGI, I think from phpinfo). In the directory root I have the logs directory, and in the file for that domain (domain_com.php.error.log) there was no hint at the incident, as I noted before. Nor I saw any line about it in the Errors page in cPanel. Thank you, I'm eager to help investigating if you need it.

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  Nicola Urbinati

  • August 08, 2018 18:08

  PS: I noted now "PHP Handlers do not apply to PHP-FPM." So joomla is right: FastCGI/FPM.

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  cPanelMichael

  • August 09, 2018 15:03

  Hello @Nicola Urbinati, With PHP-FPM, the individual error log for PHP scripts is located in the following location: /home/username/logs/domain_com.php.error.log Are you sure that no entries exist at all in this log file at the times when the memory limit was reached? Thank you.

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  Nicola Urbinati

  • August 09, 2018 16:22

  That's exactly where I searched for hints, and found nothing. Might be Joomla thew the error before PHP could do it, but even Joomla logs were without lines about the incident.

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  cPanelMichael

  • August 09, 2018 17:33

  Hello @Nicola Urbinati, We're happy to take a closer look at your server to see why the PHP errors are not logged. You can open a

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  Nicola Urbinati

  • August 09, 2018 18:45

  Ticket: 10082599

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  Nicola Urbinati

  • August 09, 2018 19:01

  Sorry @cPanelMichael I must have problems opening the ticket: I have errror 500 on your store and ticket sites from Chrome, trying again from Mozilla (they're working from there)

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  Nicola Urbinati

  • August 09, 2018 19:19

  Ticket: 10082823

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  cPanelMichael

  • August 13, 2018 15:44

  Hello, To update, it looks like the global PHP-FPM error log for PHP version 7.2 was helpful for troubleshooting the specific error message: /opt/cpanel/ea-php72/root/usr/var/log/php-fpm/error.log Thank you.

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