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Archive for March 2010

UEC: Bundling Windows Image

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Creating new disk image

This will be the main HDD in the virtual image, so make sure to give it as much space as you’ll need. Since we’re building a kvm image, we can use a qcow2 format for disk images. Qcow2 is an expandable image format, so it’ll only take as much storage space as it’s actually used within the image.

$ kvm-img create -f qcow2 win-2k3.img 20G

OS Installation

Get the iso file of the Windows distribution to be installed in the image. And start the installation process.

$sudo kvm -m 1024 -cdrom Win2003_cd1.iso -drive file=win-2k3.img,if=scsi,boot=on -nographic -vnc :0

After finishing the installation and in case the installation needs 2nd CD as well, reboot the VM and launch the VM by the following command.

$ sudo kvm -m 1024 -boot c -cdrom Win2003_cd2.iso -drive file=win-2k3.img,if=scsi,boot=on -nographic -vnc :0

Once installation is complete, create the boot disk needed for Windows 2003 server. Read the rest of this entry »

Written by kiranmurari

March 29, 2010 at 9:46 am

UEC: Attach EBS volume to a running instance

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Linux Instances

First create a volume of the required size using euca-create-volume

$ euca-create-volume -s 10 -z mycloud
VOLUME  vol-333C04B8    10       creating        2010-03-26T05:20:56.383Z

Check the available volumes and their status with euca-describe-volumes

$ euca-describe-volumes
VOLUME  vol-333C04B8    10   mycloud   available     2010-03-26T05:20:56.383Z

Now attach the volume to a running instance using euca-attach-volume

$ euca-attach-volume -i i-41620887 -d /dev/sdb vol-333C04B8

The volumes status changes from “available” to “in-use” if it is attached properly.

$ euca-describe-volumes
VOLUME  vol-333C04B8    10  mycloud in-use  2010-03-26T05:41:28.019Z
ATTACHMENT      vol-331F04B2    i-41620887      unknown,requested:/dev/sdb  2010-03-26T05:43:51.343Z

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Written by kiranmurari

March 26, 2010 at 11:58 am

UEC: Bundling Linux Image

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Creating a new disk Image

This will be the main HDD in the virtual image, so make sure to give it as much space as youll need. Since were building a kvm image, we can use a qcow2 format for disk images. Qcow2 is an expandable image format, so itll only take as much storage space as its actually used within the image.

$ kvm-img create -f qcow2 image.img 5G

OS Installation

Download the iso file of the Linux distribution you want installed in the image.

$ wget http://releases.ubuntu.com/karmic/ubuntu-9.04-server-amd64.iso

And start the installation process:

$ sudo kvm -m 256 -cdrom ubuntu-9.04-server-amd64.iso -drive file=image.img,if=scsi,index=0 \
-boot d -net nic,vlan=0,model=e1000,macaddr= 00:16:3e:de:ad:01 -net tap -nographic -vnc :0

If your installation process requires more than 256MB of RAM change the -m option, and if you need more processors available, you can use the -c option.

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Written by kiranmurari

March 23, 2010 at 8:12 pm

Eucalyptus: Not enough resources: vm instances

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Issue:

FinishedVerify: Not enough resources: vm instances.

Reasoning:

This issue arises if the node controller is not registered with the cluster controller or if there are no free VMs available to launch the instance.

Solution:

In case, the node controller is not registered, the output of “euca-describe-availability-zones verbose” will show zero free and max VMs as below.

$ euca-describe-availability-zones verbose
 AVAILABILITYZONE        mycloud       A.B.C.D
 AVAILABILITYZONE        |- vm types     free / max   cpu   ram  disk
 AVAILABILITYZONE        |- m1.small     0000 / 0000   1    128     2
 AVAILABILITYZONE        |- c1.medium    0000 / 0000   1    256     5
 AVAILABILITYZONE        |- m1.large     0000 / 0000   2    512    10
 AVAILABILITYZONE        |- m1.xlarge    0000 / 0000   2   1024    20
 AVAILABILITYZONE        |- c1.xlarge    0000 / 0000   4   2048    20

Register the node controller with the following command and add the discovered nodes.

$ sudo euca_conf --no-rsync --discover-nodes

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Written by kiranmurari

March 22, 2010 at 11:36 am