You can use this script to install Elastix on VPS servers:

 Источник: linuxexpert.ro

#!/bin/sh

# Create an server virtual machine.  This one for

# checking Centos 5.3 operation running Elastix (asterisk plus extra)

VID=101

vzctl create $VID --ostemplate centos-5-x86 --config vps.basic

vzctl set $VID --onboot yes --save

vzctl set $VID --hostname elastix.bozo.com --save

vzctl set $VID --ipadd 192.168.0.$VID --save

vzctl set $VID --nameserver 192.168.0.253 --save

vzctl set $VID --userpasswd root:elastix

vzctl start $VID

echo " RUN : vzctl exec $VID passwd "

echo " Boost up the quota for disk and memory space "

vzctl set $VID --diskspace 10485760 --save

vzctl set $VID --kmemsize 15242880 --save

vzctl set $VID --othersockbuf 636896 --save

vzctl set $VID --numothersock 480 --save

vzctl set $VID --privvmpages 1000000 --save

vzctl set $VID --numproc 100 --save

# Restart the Virtual machine  so that it gets the IP addresses, etc.

vzctl restart $VID

# Where do we start here  install using yum

sleep 20

REPO=/var/lib/vz/private/$VID/etc/yum.repos.d/elastix.repo

echo "[elastix]" >> $REPO

echo "name=Elastix RPM Repository for CentOS" >> $REPO

echo "baseurl=http://repo.elastix.org/centos/$releasever/updates/RPMS/" >> $REPO

echo "gpgcheck=0" >> $REPO

echo "enabled=1" >> $REPO

echo "" >> $REPO

vzctl exec $VID "yum -y install asterisk*"

vzctl exec $VID "yum -y install elastix-*"

vzctl exec $VID "yum -y install freeze"

vzctl exec $VID "yum -y install fxload"

vzctl exec $VID "yum -y install kernel-module-rhino*"

vzctl exec $VID "yum -y install libmfcr2"

vzctl exec $VID "yum -y install lzop"

vzctl exec $VID "yum -y install perl-HTML-TokeParser-Simple"

vzctl exec $VID "yum -y install perl-WWW-Mechanize"

vzctl exec $VID "yum -y install mod_ssl"

 

You can also install from rpm. If you have dependences try to install with --nodeps 

Here are standard password for elastix: 

Interface   Login    Password

Elastix       admin   palosanto

freePBX     admin   admin

FOP           admin   eLaStIx.2oo7

A2Billing    admin   mypassword

MySQL       root      eLaStIx.2oo7

SugarCRM  admin  password

vTiger        admin   admin

          Openfire    admin   Whatever set at install