#41593 [Com]: FastCGI does not handle graceful reload/shutdown

ID: 41593 Comment by: dan at sypher7 dot com Reported By: jonepet at dcvhost dot no Status: No Feedback Bug Type: CGI related Operating System: Linux PHP Version: 5.2.3 Assigned To: dmitry New Comment: I just wanted to follow up: I recently installed PHP 5.2.5 alongside 4.4.8. With the identical setup. PHP4 will cause the internal server error, but PHP5 will not. So this appears to be a PHP4-only issue. Previous Comments: ------------------------------------------------------------------------ [2008-02-15 21:59:49] dan at sypher7 dot com I was able to reproduce this in the 4.4.8 version of PHP using the latest mod_fastcgi and Apache 1.3. From what I understand, a graceful reload sends a SIGUSR1 to Apache. The FastCGI processor manager then sends SIGTERMs to all of the running processes. Instead of exiting cleanly, the PHP script ends abruptly and doesn't even finish sending headers. Here is what Apache's log had to say about it: FastCGI: incomplete headers (0 bytes) received from server "/path/to/php-fcgi-wrapper" I've tried messing with the FastCgiConfig settings a lot, but nothing in there appears to be changing the result. I do not know either codebase well, so I can't say with certainty if this is a mod_fastcgi or PHP bug. It would appear that either PHP isn't closing out cleanly on a SIGTERM or mod_fastcgi isn't waiting around for the process to end. ------------------------------------------------------------------------ [2007-12-18 01:00:01] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ [2007-12-10 16:15:16] dmitry@php.net I'm not able to reproduce the HTTP 500 response on graceful restart with PHP_5_3, mod_fastcgi and Apache. ------------------------------------------------------------------------ [2007-11-19 18:56:25] jani@php.net This is still buggy. ------------------------------------------------------------------------ [2007-10-16 20:48:22] andrei dot nigmatulin at gmail dot com Graceful reload/shutdown implemented in unofficial patch http://php-fpm.anight.org/. For now docs are in Russian, though. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/41593 -- Edit this bug report at http://bugs.php.net/?id=41593&edit=1