apache2gelf

A set of python scripts to deliver Apache and PHP log files to graylog2. Scripts support the following log files:

• standard Apache 2.2 error log (errorlog2gelf.py);
• custom (but quite close to standard 'combined') Apache access log (accesslog2gelf.py);
• standard PHP error log (phplog2gelf.py).

Requirements:

• python-argparse
• python-graypy (0.2.8+)

Usage example

For Apache with mod_php:

<VirtualHost *:80>
  ServerName example.com
  DocumentRoot /var/www/example.com

  ErrorLog "|| /path/to/errorlog2gelf.py --vhost example.com"
  CustomLog "|| /path/to/accesslog2gelf.py --vhost example.com" "%V %h %u \"%r\" %>s %b \"%{Referer}i\""
  php_admin_value error_log "/var/log/php/example.com.php.log"
</VirtualHost>

phplog2gelf.py basically does 'tail -F', so it should be executed separately:

/path/to/phplog2gelf.py --vhost example.com /var/log/php/example.com.php.log

Command line parameters

All scripts understand the following command line parameters:

• --localname to specify a custom hostname
• --host to specify graylog2 server
• --port to specify graylog2 GELF port
• --facility to specify log facility
• --vhost to add an extra field called 'vhost' to all log messages. This allows you to configure per-virtualhost log handlers (on the expense of running N additional processes, of course) and then filter logs in graylog2 accordingly.

accesslog2gelf.py

The script has log format hard-coded into it, so if you would like to change the CustomLog fields or resulting log messages, just hack it.

errorlog2gelf.py

The script outputs all messages to stdout. This allows you to have a local log file as well (you can only have one ErrorLog parameter in Apache configuration)

phplog2gelf.py

This script is somewhat different from the previous two. Because there is no way to get log messages from php via pipe, we have to 'tail -F' the log file. The script supports multiline PHP error log messages as well.

You should launch phplog2gelf.py separately - just stick it into your rc.local file. If you have a Debian/Ubuntu system you can also use the following monit configuration:

check process phplog2gelf_example with pidfile /var/run/phplog2gelf_example.pid
    start program = "/sbin/start-stop-daemon --start --pidfile /var/run/phplog2gelf_example.pid --user www-data --chuid www-data --background --make-pidfile --exec /usr/local/sbin/phplog2gelf.py -- --vhost example.com /var/log/php/example.com.php.log"
    stop program = "/sbin/start-stop-daemon --stop --pidfile /var/run/phplog2gelf_example.pid --verbose"

Credits

Copyright (c) 2012, Anton Tolchanov

The scripts are licensed under MIT license.