ubuntu@manager:~/dev/precise/drupal6$ euca-describe-images
IMAGE   aki-00000001    None (tty-linux-kernel)         available       private                 kernel                          instance-store
IMAGE   ari-00000002    None (tty-linux-ramdisk)                available       private                 ramdisk                         instance-store
IMAGE   ami-00000003    None (tty-linux)                available       private                 machine aki-00000001    ari-00000002            instance-store
IMAGE   ami-00000004    None (Precise x86_64)           available       public                  machine                         instance-store
IMAGE   aki-00000005    oneiric/oneiric-server-cloudimg-amd64-vmlinuz-virtual.manifest.xml              available       private         x86_64  kernel                          instance-store
IMAGE   ami-00000006    oneiric/oneiric-server-cloudimg-amd64.img.manifest.xml          available       private         x86_64  machine aki-00000005                    instance-store
IMAGE   ami-00000007    snapshot                available       private                 machine                         instance-store

let s use ami-00000003

ubuntu@manager:~/dev/precise/drupal6$ euca-describe-instances
RESERVATION     r-bukxn0wy      95d0dd11eeb34c1fae210f983eba0810        default
INSTANCE        i-00000012      ami-00000003    192.168.122.131 server-18       running adminkey (95d0dd11eeb34c1fae210f983eba0810, compute3)   0               m1.small        2012-08-10T10:14:39.000Z   nova    aki-00000001    ari-00000002            monitoring-disabled     192.168.122.131 10.0.0.4                        instance-store
RESERVATION     r-gwna0q3b      95d0dd11eeb34c1fae210f983eba0810        default
INSTANCE        i-00000011      ami-00000004    192.168.122.130 server-17       running jumpkey (95d0dd11eeb34c1fae210f983eba0810, compute2)    0               m1.small        2012-08-08T10:26:43.000Z   nova                            monitoring-disabled     192.168.122.130 10.0.0.3                        instance-store
RESERVATION     r-1fu0ng4m      850708ec79844e148670e3131d3780bc        default
INSTANCE        i-00000010      ami-00000004    192.168.122.129 server-16       running totokey (850708ec79844e148670e3131d3780bc, compute1)    0               m1.small        2012-08-08T10:26:07.000Z   nova                            monitoring-disabled     192.168.122.129 10.0.0.2                        instance-store


so it s server-18 running on compute3

ubuntu@compute3:~$ ps aux |grep kvm
root      1028  0.0  0.0      0     0 ?        S<   Aug08   0:00 [kvm-irqfd-clean]
104       1166 44.8  1.3 2809020 136684 ?      Sl   11:14   0:12 /usr/bin/kvm -S -M pc-1.0 -enable-kvm -m 2048 -smp 1,sockets=1,cores=1,threads=1 -name instance-00000012 -uuid 423d3fa2-8662-4087-afe3-04b4a488db71 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000012.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -kernel /var/lib/nova/instances/instance-00000012/kernel -initrd /var/lib/nova/instances/instance-00000012/ramdisk -append root=/dev/vda console=ttyS0 -drive file=/var/lib/nova/instances/instance-00000012/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/var/lib/nova/instances/instance-00000012/disk.local,if=none,id=drive-virtio-disk1,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -netdev tap,fd=19,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:23:95:71,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/var/lib/nova/instances/instance-00000012/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
root      1167  0.0  0.0      0     0 ?        S<   11:14   0:00 [kvm-pit-wq]
ubuntu    1298  0.0  0.0   8096   892 pts/0    S+   11:15   0:00 grep --color=auto kvm