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Nick
Asked: 2017-02-08 22:45:21 +0800 CST

Enable error logging on PHP-FPM 7 with Nginx?

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This is essentially the same as these questions:

https://stackoverflow.com/questions/8677493/php-fpm-doesnt-write-to-error-log

Nginx not logging PHP errors

BUT the answers there don't seem to be working on Ubuntu 16.04 with PHP 7.

/etc/php/7.0/fpm/pool.d/www.conf:

catch_workers_output = yes
php_flag[display_errors] = on
php_admin_value[error_log] = /var/log/fpm-php.www.log
php_admin_flag[log_errors] = on

/var/log/fpm-php.www.log exists and is owned by www-data.

/etc/php/7.0/fpm/php.ini:

log_errors = On

Nginx Virtual Host's Server block

access_log /var/log/myapp/access.log;
error_log /var/log/myapp/error.log error;

/var/log/myapp/access.log exists and is owned by www-data.

But when an error occurs, I don't get an error in any of the specified log files, and can't find it in any other place either.

I went through all of the suggestions on the other question but didn't find any answer that worked. I'm assuming something has changed since those answer were posted. Any suggestions?

nginx php-fpm ubuntu-16.04 php7

1 Answers

  1. The comment above by the_nuts helped solve it for me. The directory and file didn't exist.

    To diagnose, I added:

    print("\n\n<br><br>log_errors: ".ini_get('log_errors'));
print("\n\n<br><br>error_log: ".ini_get('error_log'));

    to the top of my code (a WordPress plugin). This outputted:

    log_errors: 1
error_log: /usr/local/etc/php-fpm.d/fpm.log

    In terminal I used ls to learn the file and directory were missing, i.e.

    ls /usr/local/etc/php-fpm.d/fpm.log
ls /usr/local/etc/php-fpm.d/

    outputted

    ls: cannot access '/usr/local/etc/php-fpm.d/fpm.log': No such file or directory
ls: cannot access '/usr/local/etc/php-fpm.d': No such file or directory

    To fix: I changed directory to /usr/local/etc, created the directory, the file and then set the owner to www-data:www-data

    cd /usr/local/etc
sudo mkdir php-fpm.d
cd php-fpm.d
sudo touch fpm.log
sudo chown -R www-data:www-data fpm.log

    If the file and directory do exist, run

    ls fpm.log -l

    and if owner is root:

    -rw-r--r-- 1 root root 0 Jun 23 19:52 fpm.log

    run

    sudo chown -R www-data:www-data fpm.log

    to give the web server ownership and write access

    -rw-r--r-- 1 www-data www-data 12848 Jun 23 20:07 fpm.log
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