Install required packages

apt-get install apache2-mpm-prefork php5 php5-mysql php5-curl php5-mcrypt php5-snmp php-pear rrdtool librrd-dev libcurl4-openssl-dev mysql-server snmp libssh2-php apparmor-utils

Unpack scalr application files. This assumes that the scalr package is at /tmp folder

cd /tmp
tar xvfz scalr-2.5.r6086.tar.gz
mv scalr-2.5.r6086/app /var/www
chown root.www-data /var/www/app -R
chmod g+w /var/www/app/etc/.cryptokey
chmod g+w /var/www/app/cache -R

Before we proceed. Let's fix some code. This will resolve Bind DNS issues. Comment out the following code in /var/www/app/src/Scalr/Net/Dns/Bind/RemoteBind.php (line 36-37). The commented code should look like:

//                        if (count($this->zonesConfig) == 0)
//                                throw new Exception("Zones config is empty");

Setup MySQL

mysql -uroot -p -e 'create database scalr; grant all on scalr.* to scalr@localhost identified by "<scalrpassword>";flush privileges;'
 
cat /tmp/scalr-2.5.r6086/sql/structure.sql | mysql -uscalr -p scalr
cat /tmp/scalr-2.5.r6086/sql/data.sql | mysql -uscalr -p scalr

Tell scalr how to connect to MySQL by modifying /var/www/app/etc/config.ini. The [db] part of that file should look similar to:

driver=mysqli
host = "localhost"
name = "scalr"
user = "scalr"
pass = "<scalrpassword>"

Note: The pass parameter should reflect the same password stated in the previous step (step 4)

Setup and enable the Apache VHost

cat <<EOF> /etc/apache2/sites-available/scalr 
<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        ServerName scalr.local
        DocumentRoot /var/www/app/www
        <Directory /var/www/app/www>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride All
        </Directory>
</VirtualHost>
EOF
 
a2ensite scalr

Install additional PHP modules

pecl install rrd
echo 'extension=rrd.so' >  /etc/php5/apache2/conf.d/rrd.ini
pecl install pecl_http
echo 'extension=http.so' >  /etc/php5/apache2/conf.d/http.ini
a2enmod rewrite
service apache2 restart

At this point, we can now check if our environment has all the Apache and PHP modules required to run scalr. Open and point your browswer to http://scalr.local/testenvironment.php. Note that scalr.local is a local domain so make necessary changes in your own DNS resolvers or your workstations /etc/hosts.

Cron jobs

cat <<EOF> /etc/cron.d/scalr 
*/2 * * * *  root /usr/bin/php -q  /var/www/app/cron-ng/cron.php --Poller
* * * * *  root /usr/bin/php -q /var/www/app/cron/cron.php --Scheduler
*/10 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --MySQLMaintenance
* * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --DNSManagerPoll
17 5 * * * root /usr/bin/php -q  /var/www/app/cron/cron.php --RotateLogs
*/2 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --EBSManager
*/20 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --RolesQueue
*/5 * * * *  root /usr/bin/php -q  /var/www/app/cron-ng/cron.php --DbMsrMaintenance
*/2 * * * *  root /usr/bin/php -q  /var/www/app/cron-ng/cron.php --Scaling
*/5 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --DBQueueEvent
*/2 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --SzrMessaging
*/4 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --RDSMaintenance
*/2 * * * *  root /usr/bin/php -q  /var/www/app/cron/cron.php --BundleTasksManager
* * * * *  root /usr/bin/php -q  /var/www/app/cron-ng/cron.php --ScalarizrMessaging
* * * * *  root /usr/bin/php -q  /var/www/app/cron-ng/cron.php --MessagingQueue
*/2 * * * *  root /usr/bin/php -q  /var/www/app/cron-ng/cron.php --DeployManager
EOF

Bind

apt-get install bind9
chmod g+w /etc/bind/named.conf
echo 'include "/var/named/etc/namedb/client_zones/zones.include";' >> /etc/bind/named.conf
mkdir -p /var/named/etc/namedb/client_zones
chown root.bind /var/named/etc/namedb/client_zones
chmod 2775 /var/named/etc/namedb/client_zones
 
# New domains will go to this file
echo ' ' > /var/named/etc/namedb/client_zones/zones.include
chown root.bind /var/named/etc/namedb/client_zones/zones.include
chmod g+w /var/named/etc/namedb/client_zones/zones.include
 
# Put Bind in apparmor complain mode. This will allow Bind to include **zones.include** as mentioned above. May need to setup a more secure configuration
aa-complain /usr/sbin/named
 
# Restart
service bind9 restart

Login as Scalr Admin

http://scalr.local
 
Email: admin
Password: admin

Note: When logging in as admin, you may see an “Insufficient permissions” error message. I have no idea how to fix that, but you may ignore that error message.

Change Admin password (upper right corner of the screen)

admin->Profile

Change Core settings

Settings->Core settings

Create a scalr user. Then login as that user to create your first server farm

Accounts->Manage

Create your first server farm as described in the Getting Started Guide