I have two servers which is Ubuntu 12.04 and Ubuntu 14.04. When I use Ubuntu 14.04 in my new server and enabled the php-fpm log file found under /etc/php5/fpm/php-fpm.conf that reads as follows:

error_log = /var/log/php5-fpm.log

I noticed that most of the log that I found in Ubuntu 12.04 is not written in 14.04. For example, if I restart php5-fpm in my Ubuntu 12.04, a restart log is being written, however, this does not happen in 14.04. Another log which I missed in 14.04 are the following:

[23-Aug-2014 16:23:03] NOTICE: [pool web42] child 118098 exited with code 0 after 12983.480191 seconds from start
[23-Aug-2014 16:23:03] NOTICE: [pool web42] child 147653 started
[23-Aug-2014 17:27:31] WARNING: [pool web8] child 76743, script '/var/www/mysite.com/web/wp-comments-post.php' (request: "POST /wp-comments-post.php") executing too slow (12.923022 sec), logging

I really wanted to have this kind of log so I will know the length of time a slow script has executed.

Does anyone know if there are other settings in Ubuntu 14.04 that I need to change in addition to /etc/php5/fpm/php-fpm.conf?


This is the result when I run /etc/init.d/php5-fpm restart ; find / -type d -name /proc -prune -o -type f -mmin 2 -print:

find: warning: Unix filenames usually don't contain slashes (though pathnames do).  That means that '-name `/proc'' will probably evaluate to false all the time on this system.  You might find the '-wholename' test more useful, or perhaps '-samefile'.  Alternatively, if you are using GNU grep, you could use 'find ... -print0 | grep -FzZ `/proc''.

The log is being written to


This was ridiculously annoying to find.

Thanks to Luigi (in the comments) for pointing this out.

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  • Same same. Now it would be cool to know why that is and what one can do about. – Felix Apr 22 '17 at 5:50
  • Yep. Any idea why the logfile is not the correct one? – DracoBlue May 22 '17 at 9:38

Check your php-fpm.conf and comment below entry

catch_workers_output = yes

Restart desired services and check it worked for me.

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  • Hi. I can't find this settings (catch_workers_output = yes) in php5-fpm.conf. There is settings in www.conf under pool.d/www.conf but it was commented in v12.04. Which I think it's not also necessary to be commented out in v14.04. – jaypabs Aug 24 '14 at 12:44
  • you can add then and restart the services. – Pratap Aug 24 '14 at 14:49
  • I tried to uncomment the catch_workers_output = yes under www.conf without lack. No notices or warning messages is logged in php-fpm.log file. – jaypabs Aug 29 '14 at 6:35
  • 1
    Can you give me the log file name which you are checking with the location?Also as per the conf file description, by default it writes the log to file "/usr/local/php/var/log/php-fpm.log". error_log string Path to error log file. Default value: #INSTALL_PREFIX#/log/php-fpm.log. – Pratap Aug 29 '14 at 20:28
  • The log file is saved here /var/log/php5-fpm.log. – jaypabs Aug 29 '14 at 22:35

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