For installation, please see the INSTALLATION file or the install guide at the
Apache VCL site (http://vcl.apache.org/docs/installation.html). This file is
only a list of requirements, which are also stated in the install guide.

System Requirements:

Web Frontend:
Apache HTTP Server v1.3 or v2.x with SSL enabled
php 5.0 or later
php modules (some of these may be built in for your distro):
- php-gd
- php-json
- php-mysql
- php-openssl
- php-sysvsem
- php-xml
- php-xmlrpc
- php-gettext
- php-ldap (if you will be using ldap authentication)
- php-process (for RHEL/CentOS 6)

Database:
MySQL 5.0 or later

Management Node Backend:
Operating system - Tested on CentOS 5.x, CentOS 6.x, RedHat Enterprise Linux
5.x, Red Hat Enterprise Linux 6.x

Packages:
- expat-devel
- gcc
- krb5-libs
- krb5-devel
- libxml2-devel
- make
- nmap
- openssl-devel
- perl-Archive-Tar
- perl-CPAN
- perl-DBD-MySQL
- perl-DBI
- perl-Digest-SHA1
- perl-IO-String
- perl-MailTools
- perl-Net-Netmask
- perl-Net-SSH-Expect
- perl-RPC-XML
- perl-Text-CSV_XS
- perl-XML-Simple
- perl-YAML
- xmlsec1-openssl
- MySQL 5 client
- OpenSSH client
- Perl 5.8.x

Management Node Perl Modules:
The Perl modules listed below are available from CPAN (www.cpan.org) and are
distributed under one or more of the following licenses:
- The "Artistic License"
- GNU General Public License (GPL)
- GNU Library or "Lesser" General Public License (LGPL)

Some of the required Perl modules may be built into your distribution. A script
is provided which attempts to install the Perl modules. See the "Installing
Required Perl modules" section of the INSTALLATION file.

- Crypt-SSLeay  
  http://search.cpan.org/dist/Crypt-SSLeay/
  License: Perl Artistic & GPL
- DBI  
  http://search.cpan.org/dist/DBI/
  License: Perl Artistic & GPL
- Devel-StackTrace  
  http://search.cpan.org/dist/Devel-StackTrace/
  License: Perl Artistic & GPL
- Exception-Class  
  http://search.cpan.org/dist/Exception-Class/
  License: Perl Artistic & GPL
- HTML-Parser  
  http://search.cpan.org/dist/HTML-Parser/
  License: Perl Artistic & GPL
- IO-Compress  
  http://search.cpan.org/dist/IO-Compress/
  License: Perl Artistic & GPL
- libwww-perl  
  http://search.cpan.org/dist/libwww-perl/
  License: Perl Artistic & GPL
- MailTools  
  http://search.cpan.org/dist/MailTools/
  License: Perl Artistic & GPL
- Object-InsideOut  
  http://search.cpan.org/dist/Object-InsideOut/
  License: Perl Artistic & GPL
- RPC-XML  
  http://search.cpan.org/dist/RPC-XML/
  License: Perl Artistic & LGPL
- Scalar-List-Utils 
  http://search.cpan.org/dist/Scalar-List-Utils
  License: Perl Artistic & GPL
- XML-Parser  
  http://search.cpan.org/dist/XML-Parser/
  License: Perl Artistic & GPL
- YAML  
  http://search.cpan.org/dist/YAML/
  License: Perl Artistic & GPL
- URI  
  http://search.cpan.org/dist/URI/
  License: Perl Artistic & GPL
- Digest-SHA1 
  http://search.cpan.org/dist/Digest-SHA1/
  License: Perl Artistic & GPL

Management Node Backend Conditional System Requirements:
- Bare-metal and virtual machine provisioning Both bare-metal and virtual
  machine provisioning require a DHCP server running on the management node
  listening on the private network.
- Bare-metal provisioning
  If you want to provision bare-metal or physical computers such as blades, you
  will need xCAT configured and working. This release supports either xCAT 1.3
  or xCAT 2.x. Image capture support using xCAT 2.x is an add on feature. To
  enable imaging for xCAT2.X See adding support for partimage and partimage-ng
  to xCAT 2.x in the VCL wiki. 
- VMware virtual machine provisioning
  The VMware vSphere SDK for Perl is required in order to provision virtual machines on
  VMware ESX or VMware ESXi without SSH enabled or on vCenter. It can be
  obtained from http://www.vmware.com/support/developer/viperltoolkit.
- Windows XP/2003
  The Sysprep utility is required in order to provision bare-metal Windows XP or
  Windows Server 2003 images. It can be downloaded from
  http://www.microsoft.com.
- Jabber Instant Message Notification (optional)
  VCL has the ability to send instant message notifications using Jabber. This
  feature is optional and can be enabled or disabled by configuring the
  "jabber=[yes|no]" property in the vcld.conf file. If Jabber notification
  feature is enabled, the following Perl modules need to be installed:
  - Net-Jabber
    http://search.cpan.org/dist/Net-Jabber/
    License: Perl Artistic and GPL
  - Net-XMPP
    http://search.cpan.org/dist/Net-XMPP/
    License: LGPL
  - Module-Build
    http://search.cpan.org/dist/Module-Build/
    License: Perl Artistic and GPL
  - XML-Stream
    http://search.cpan.org/dist/XML-Stream/
    License: Perl Artistic and GPL
  - Authen-SASL
    http://search.cpan.org/dist/Authen-SASL/
    License: Perl Artistic and GPL
  - Digest::SHA1 
    http://search.cpan.org/dist/Digest-SHA1/
    License: Perl Artistic and GPL


Bundled 3rd Party Software
A copy of Dojo Toolkit version 1.6.1 is included in the web code under
web/dojo.
Portions of the phpseclib (http://phpseclib.sourceforge.net) project are
included in the web code under web/.ht-inc/phpseclib.