Personal:Using PHP with fcgid & suexec on Apache 2.2

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Using PHP with fcgid & suexec on Apache 2.2

Ripped from http://tigreraye.org/Using%20PHP%20with%20fcgid%20&%20suexec%20on%20Apache%202.2 Nearly word for word

In short

This page summaries a working setup of PHP on Apache, using fcgid and suexec. It has been tested with Apache 2.2 on a Debian Linux system.

Installation procedure

Customization

You need to adapt the following values to your own setup:

* user_account: the user account under which your PHP scripts will run.
* user_group: the group that will be used to run your PHP scripts.
* www-data: the user account used by Apache.
* php_site: the directory under which your web site will be installed.
* /usr/bin/php-cgi: the full path to your PHP interpreter<<FootNote(It will usually be called `php4-cgi` or `php5-cgi`)>>. It will need to support the FastCGI<<FootNote(You can check this by running the `php-cgi -v` command and looking for "`(cgi-fcgi)`" in its output.)>> interface.

Apache 2 setup

Enable the `fcgid` and `suexec` Apache modules. If you're using a Debian, this can be done with the following commands:

a2enmod suexec
a2enmod fcgid

Modifiy your virtuals hosts as follows:

<VirtualHost *>

DocumentRoot /var/www/user_account/php_site

[...]

Options None

SuexecUserGroup user_account user_group

<Directory /var/www/user_account/php_site>

  # The PHP scripts in this directory
  # are run through the php-cgi script.

  AddHandler fcgid-script .php
  FCGIWrapper /var/www/user_account/php-cgi .php
  Options ExecCGI
</Directory>

# We run a single PHP FastCGI server
# which will launch as many children
# as necessary.

DefaultMaxClassProcessCount 1
DefaultMinClassProcessCount 1

</VirtualHost>

You now need to check that you Apache is correctly set up:

apache2ctl -t

Directory structure creation

Unless you use the `mod_userdir` Apache module, your will need to work in a subdirectory of `/var/www`.

First, create the directories that will contain your site:

mkdir -p /var/www/user_account/php_site

Then copy your files in the `php_site` directory.

Wrapper script

Place the following script in a file called php-cgi, in the `/var/www/user_account` directory:

#!/bin/sh
export PHP_FCGI_CHILDREN=4
export PHP_FCGI_MAX_REQUESTS=500
exec /usr/bin/php-cgi $@

When this script is started by Apache, it will automatically be replaced by the `php-cgi` process. This process will start 4 chilren, to process the incoming requests. Once a child will have processed 500 requests, it will automatically shutdown and be restarted by the initial process. This feature is here to prevent a possible memory leak.

Your should adapt the number of children (`PHP_FCGI_CHILDREN`) to suit your needs. A lower value (e.g. 4) will be less demanding on your server. A higher value (e.g. 8) will enable your server to handle more connexions.

Permissions update

Apply the following permissions:

# User account directory

chown user_account:user_group /var/www/user_account
chmod u=rwx,g=rx,o=rx /var/www/user_account

# Wrapper script

chown user_account:user_group /var/www/user_account/php-cgi
chmod u=rwx,ug= /var/www/user_account/php-cgi

# Site

chown user_account:www-data /var/www/user_account/php_site
chmod -R u=rwX,g=rX,o= /var/www/user_account/php_site

Restart Apache

Everything should be OK now, you just need to restart Apache:

apache2ctl graceful

See also

* The [[1]] documentation of the Apache project.
* The [[2]] short documentation.
* The [[3]] file, which is included in the PHP sources.

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