Phabricator User DocsInstallation Guide
Phabricator User DocumentationIntroduction

Installation Guide Article

This document contains basic install instructions to get Phabricator up and running.

Installation Requirements

You will need a computer. Options include:

  • A Normal Computer: This is strongly recommended. Many installs use a VM in EC2. Phabricator installs properly and works well on a normal computer.
  • A Shared Host: This may work, but is not recommended. Many shared hosting environments have restrictions which prevent some of Phabricator's features from working. Consider using a normal computer instead.
  • A SAN Appliance, Network Router, Gaming Console, Raspberry Pi, etc.: Although you may be able to install Phabricator on specialized hardware, it is unlikely to work well and will be difficult for us to support. Strongly consider using a normal computer instead.
  • A Toaster, Car, Firearm, Thermostat, etc.: Yes, many modern devices now have embedded computing capability. We live in interesting times. However, you should not install Phabricator on these devices. Instead, install it on a normal computer.

To install the Phabricator server software, you will need an operating system on your normal computer which is not Windows. Note that the command line interface does work on Windows, and you can use Phabricator from any operating system with a web browser. However, the server software does not run on Windows. It does run on most other operating systems, so choose one of these instead:

  • Linux: Most installs use Linux.
  • Mac OS X: Mac OS X is an acceptable flavor of Linux.
  • FreeBSD: While FreeBSD is certainly not a flavor of Linux, it is a fine operating system possessed of many desirable qualities, and Phabricator will install and run properly on FreeBSD.
  • Solaris, etc.: Other systems which look like Linux and quack like Linux will generally work fine, although we may suffer a reduced ability to support and resolve issues on unusual operating systems.

Beyond an operating system, you will need a webserver.

  • Apache: Many installs use Apache + mod_php.
  • nginx: Many installs use nginx + php-fpm.
  • lighttpd: lighttpd is less popular than Apache or nginx, but it works fine.
  • Other: Other webservers which can run PHP are also likely to work fine, although these installation instructions will not cover how to set them up.
  • PHP Builtin Server: You can use the builtin PHP webserver for development or testing, although it should not be used in production.

You will also need:

  • MySQL: You need MySQL.
  • PHP: You need PHP 5.2 or newer.

You'll probably also need a domain name. In particular, you should read this note:

NOTE: Phabricator must be installed on an entire domain. You can not install it to a path on an existing domain, like Instead, install it to an entire domain or subdomain, like

Installing Required Components

If you are installing on Ubuntu or an RedHat derivative, there are install scripts available which should handle most of the things discussed in this document for you:

If those work for you, you can skip directly to the Configuration Guide. These scripts are also available in the scripts/install directory in the project itself.

Otherwise, here's a general description of what you need to install:

  • git (usually called "git" in package management systems)
  • Apache (usually "httpd" or "apache2") (or nginx)
  • MySQL Server (usually "mysqld" or "mysql-server")
  • PHP (usually "php")
  • Required PHP extensions: mbstring, iconv, mysql (or mysqli), curl, pcntl (these might be something like "php-mysql" or "php5-mysql")
  • Optional PHP extensions: gd, apc (special instructions for APC are available below if you have difficulty installing it), xhprof (instructions below, you only need this if you are developing Phabricator)

If you already have LAMP setup, you've probably already got everything you need. It may also be helpful to refer to the install scripts above, even if they don't work for your system.

Now that you have all that stuff installed, grab Phabricator and its dependencies:

$ cd somewhere/ # pick some install directory
somewhere/ $ git clone git://
somewhere/ $ git clone git://
somewhere/ $ git clone git://

Installing APC (Optional)

Like everything else written in PHP, Phabricator will run much faster with APC installed. You likely need to install "pcre-devel" first:

sudo yum install pcre-devel

Then you have two options. Either install via PECL (try this first):

sudo yum install php-pear
sudo pecl install apc

If that doesn't work, grab the package from PECL directly and follow the build instructions there:

Installing APC is optional but strongly recommended, especially on production hosts.

Once APC is installed, test that it is available by running:

php -i | grep apc

If it doesn't show up, add: "/etc/php.d/apc.ini" or the "php.ini" file indicated by "php -i".

Installing XHProf (Optional)

XHProf is a PHP profiling tool. You don't need to install it unless you are developing Phabricator and making performance changes.

You can install xhprof with:

$ pecl install xhprof

If you have a PEAR version prior to 1.9.3, you may run into a phpize failure. If so, you can download the source and build it with:

$ cd extension/
$ phpize
$ ./configure
$ make
$ sudo make install

You may also need to add "" to your php.ini.

See for more information.

Updating Phabricator

Since Phabricator is under active development, you should update frequently. To update Phabricator:

  • Stop the webserver (including php-fpm, if you use it).
  • Run git pull in libphutil/, arcanist/ and phabricator/.
  • Run phabricator/bin/storage upgrade.
  • Restart the webserver (and php-fpm, if you stopped it earlier).

For more details, see Configuration Guide. You can use a script similar to this one to automate the process:

Next Steps

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