Using PHP5-FPM With Apache2 On CentOS 6.2

 This tutorial shows how you can install an Apache2 webserver on a CentOS 6.2 server with PHP5 (through PHP-FPM) and MySQL support. PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites.
I do not issue any guarantee that this will work for you!

1 Preliminary Note

In this tutorial I use the hostname server1.example.com with the IP address 192.168.0.100. These settings might differ for you, so you have to replace them where appropriate.

2 Enabling Additional Repositories

We need to install mod_fastcgi later on which is available in the RPMforge repositories. RPMforge can be enabled as follows:
php-fpm is not available from the official CentOS repositories, but from the Remi RPM repository which itself depends on the EPEL repository; we can enable both repositories as follows:
Edit /etc/yum.repos.d/epel.repo...
... and add the line priority=10 to the [epel] section:

[epel] name=Extra Packages for Enterprise Linux 6 - $basearch #baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch failovermethod=priority enabled=1 priority=10 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6 [...]

Then do the same for the [remi] section in /etc/yum.repos.d/remi.repo, plus change enabled to 1:

[remi] name=Les RPM de remi pour Enterprise Linux $releasever - $basearch #baseurl=http://rpms.famillecollet.com/enterprise/$releasever/remi/$basearch/ mirrorlist=http://rpms.famillecollet.com/enterprise/$releasever/remi/mirror enabled=1 priority=10 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi failovermethod=priority [remi-test] name=Les RPM de remi en test pour Enterprise Linux $releasever - $basearch #baseurl=http://rpms.famillecollet.com/enterprise/$releasever/test/$basearch/ mirrorlist=http://rpms.famillecollet.com/enterprise/$releasever/test/mirror enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi

3 Installing MySQL 5

To install MySQL, we do this:
Then we create the system startup links for MySQL (so that MySQL starts automatically whenever the system boots) and start the MySQL server:
Set passwords for the MySQL root account:
[root@server1 ~]# mysql_secure_installation




NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!


In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

Set root password? [Y/n] <-- ENTER
New password: <-- yourrootsqlpassword
Re-enter new password: <-- yourrootsqlpassword
Password updated successfully!
Reloading privilege tables..
 ... Success!


By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] <-- ENTER
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] <-- ENTER
 ... Success!

By default, MySQL comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] <-- ENTER
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] <-- ENTER
 ... Success!

Cleaning up...



All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!


[root@server1 ~]#

4 Installing Apache2

Apache2 is available as a CentOS package, therefore we can install it like this:
Now configure your system to start Apache at boot time...
... and start Apache:
Now direct your browser to http://192.168.0.100, and you should see the Apache2 placeholder page:


Apache's default document root is /var/www/html on CentOS, and the configuration file is /etc/httpd/conf/httpd.conf. Additional configurations are stored in the /etc/httpd/conf.d/ directory.

5 Installing PHP5

We can make PHP5 work in Apache2 through PHP-FPM and Apache's mod_fastcgi module which we install as follows:
Then open /etc/php.ini:
In order to avoid errors like
... in /var/log/php-fpm/www-error.log when you call a PHP script in your browser, you should set date.timezone in /etc/php.ini:

[...] [Date] ; Defines the default timezone used by the date functions ; http://www.php.net/manual/en/datetime.configuration.php#ini.date.timezone date.timezone = "Europe/Berlin" [...]

You can find out the correct timezone for your system by running:
Next create the system startup links for php-fpm and start it:
PHP-FPM is a daemon process (with the init script /etc/init.d/php-fpm) that runs a FastCGI server on port 9000.
Next restart Apache:

6 Configuring Apache

To make Apache work with PHP-FPM, we need the following configuration:

DirectoryIndex index.html index.shtml index.cgi index.php AddHandler php5-fcgi .php Action php5-fcgi /php5-fcgi Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -host 127.0.0.1:9000 -pass-header Authorization

(To learn more about the FastCgiExternalServer directive, take a look at http://www.fastcgi.com/mod_fastcgi/docs/mod_fastcgi.html#FastCgiExternalServer.)
You can put it in the global Apache configuration (so it's enabled for all vhosts), for example in /etc/httpd/conf.d/fastcgi.conf, or you can place it in each vhost that should use PHP-FPM. I want to use PHP-FPM with all vhosts so I open /etc/httpd/conf.d/fastcgi.conf...
... and put the following section at the end:

[...] DirectoryIndex index.html index.shtml index.cgi index.php AddHandler php5-fcgi .php Action php5-fcgi /php5-fcgi Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -host 127.0.0.1:9000 -pass-header Authorization

The /usr/lib/cgi-bin/ directory must exist, so we create it as follows:
Restart Apache afterwards:
Now create the following PHP file in the document root /var/www/html of the default Apache vhost:
Now we call that file in a browser (e.g. http://192.168.0.100/info.php):


As you see, PHP5 is working, and it's working through FPM/FastCGI, as shown in the Server API line. If you scroll further down, you will see all modules that are already enabled in PHP5. MySQL is not listed there which means we don't have MySQL support in PHP5 yet.

7 Getting MySQL Support In PHP5

To get MySQL support in PHP, we can install the php-mysql package. It's a good idea to install some other PHP5 modules as well as you might need them for your applications. You can search for available PHP5 modules like this:
Pick the ones you need and install them like this:
Now reload PHP-FPM:
Now reload http://192.168.0.100/info.php in your browser and scroll down to the modules section again. You should now find lots of new modules there, including the MySQL module:

8 phpMyAdmin

phpMyAdmin is a web interface through which you can manage your MySQL databases. It's a good idea to install it:
Now we configure phpMyAdmin. We change the Apache configuration so that phpMyAdmin allows connections not just from localhost (by commenting out the stanza):

# # Web application to manage MySQL # # # Order Deny,Allow # Deny from all # Allow from 127.0.0.1 # Alias /phpmyadmin /usr/share/phpmyadmin Alias /phpMyAdmin /usr/share/phpmyadmin Alias /mysqladmin /usr/share/phpmyadmin

Next we change the authentication in phpMyAdmin from cookie to http:

[...] /* Authentication type */ $cfg['Servers'][$i]['auth_type'] = 'http'; [...]

Restart Apache:
Afterwards, you can access phpMyAdmin under http://192.168.0.100/phpmyadmin/:

9 Making PHP-FPM Use A Unix Socket

By default PHP-FPM is listening on port 9000 on 127.0.0.1. It is also possible to make PHP-FPM use a Unix socket which avoids the TCP overhead. To do this, open /etc/php-fpm.d/www.conf...
... and make the listen line look as follows:

[...] ;listen = 127.0.0.1:9000 listen = /tmp/php5-fpm.sock [...]

Then reload PHP-FPM:
Next go through your Apache configuration and all your vhosts and change the lineFastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -host 127.0.0.1:9000 -pass-header Authorization to FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -socket /tmp/php5-fpm.sock -pass-header Authorization, e.g. like this:

[...] DirectoryIndex index.html index.shtml index.cgi index.php AddHandler php5-fcgi .php Action php5-fcgi /php5-fcgi Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -socket /tmp/php5-fpm.sock -pass-header Authorization

Finally reload Apache:

10 Links

• Apache: http://httpd.apache.org/
• Apache Module mod_fastcgi: http://www.fastcgi.com/mod_fastcgi/docs/mod_fastcgi.html
• PHP: http://www.php.net/
• PHP-FPM: http://php-fpm.org/
• MySQL: http://www.mysql.com/
• CentOS: http://www.centos.org/
• phpMyAdmin: http://www.phpmyadmin.net/

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