Here are the steps I took to install Cassandra on the Fulltest VMs.

1. backed up the fulltest VMs with:

rsync -avP /kvm/vms/*fulltest* host:/destination/path/

2. boot the amd64 fulltest VM:

vm=vm-precise-amd64-fulltest.qcow2
kvm -m 2048 -hda /kvm/vms/${vm} -boot c -smp 2 -cpu qemu64 -net nic,model=virtio -net user,hostfwd=tcp:127.0.0.1:22666-:22 -nographic

3. login to the VM:

ssh -t -p 22666 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i /kvm/vms/ssh-keys/id_dsa dbart@localhost

4. in the VM, install Cassandra:

sudo vi /etc/apt/sources.list.d/cassandra.list

# paste in the following two lines:
deb http://www.apache.org/dist/cassandra/debian 11x main
deb-src http://www.apache.org/dist/cassandra/debian 11x main

gpg --keyserver pgp.mit.edu --recv-keys F758CE318D77295D
gpg --export --armor F758CE318D77295D | sudo apt-key add -

gpg --keyserver pgp.mit.edu --recv-keys 2B5C1B00
gpg --export --armor 2B5C1B00 | sudo apt-key add -

sudo apt-get update
sudo apt-get install cassandra

5. in the VM, launch the cassandra-cli program and test the Cassandra installation:

create keyspace DEMO; 
use DEMO; 

create column family Users 
with key_validation_class = 'UTF8Type' 
and comparator = 'UTF8Type' 
and default_validation_class = 'UTF8Type'; 

set Users[1234][name] = scott; 
set Users[1234][password] = tiger; 
get Users[1234]; 
quit; 

• Output of the above:

dbart@ubuntu-precise-amd64:~$
 cassandra-cli

Connected to: "Test Cluster" on 127.0.0.1/9160
Welcome to Cassandra CLI version 1.1.9

Type 'help;' or '?' for help.
Type 'quit;' or 'exit;' to quit.

[default@unknown]
 create keyspace DEMO;

622a672f-dd03-37bf-bf78-f3e99a8f18a6
Waiting for schema agreement...
... schemas agree across the cluster
[default@unknown]
 use DEMO;

Authenticated to keyspace: DEMO
[default@DEMO]
 create column family Users

...    
 with key_validation_class = 'UTF8Type'

...    
 and comparator = 'UTF8Type'

...    
 and default_validation_class = 'UTF8Type';

605eea14-d3e5-3d1d-ab1d-f4863c814538
Waiting for schema agreement...
... schemas agree across the cluster
[default@DEMO]
 set Users[1234][name] = scott;

Value inserted.
Elapsed time: 46 msec(s).
[default@DEMO]
 set Users[1234][password] = tiger;

Value inserted.
Elapsed time: 2.77 msec(s).
[default@DEMO]
 get Users[1234];

=> (column=name, value=scott, timestamp=1361818884084000)
=> (column=password, value=tiger, timestamp=1361818887944000)
Returned 2 results.
Elapsed time: 53 msec(s).
[default@DEMO]
 quit;

6. in the VM, shut it down:

sudo shutdown -h now

7. Do steps 2-6 for vm-precise-i386-fulltest.qcow2. The output of the testing step was:

dbart@ubuntu-precise-i386:~$
 cassandra-cli

Connected to: "Test Cluster" on 127.0.0.1/9160
Welcome to Cassandra CLI version 1.1.9

Type 'help;' or '?' for help.
Type 'quit;' or 'exit;' to quit.

[default@unknown]
 create keyspace DEMO;

5eafc25e-71b6-3585-9db1-891b3348790c
Waiting for schema agreement...
... schemas agree across the cluster
[default@unknown]
 use DEMO;

Authenticated to keyspace: DEMO
[default@DEMO]
 create column family Users

...    
 with key_validation_class = 'UTF8Type'

...    
 and comparator = 'UTF8Type'

...    
 and default_validation_class = 'UTF8Type';

9c2ad7bc-8dc0-35ce-8067-4dc4577319f1
Waiting for schema agreement...
... schemas agree across the cluster
[default@DEMO]
 set Users[1234][name] = scott;

Value inserted.
Elapsed time: 51 msec(s).
[default@DEMO]
 set Users[1234][password] = tiger;

Value inserted.
Elapsed time: 2.44 msec(s).
[default@DEMO]
 get Users[1234];

=> (column=name, value=scott, timestamp=1361819341068000)
=> (column=password, value=tiger, timestamp=1361819345337000)
Returned 2 results.
Elapsed time: 57 msec(s).
[default@DEMO]
 quit;

8. on the other build hosts, rsync the files over:

rsync -avP host::kvm/vms/*fulltest* /kvm/vms/