Category Archives: Virtualization

Everything about Virtualization

VMware Announces no more vRAM Entitlements!

Lets not even debate the whole structure about the vRAM pricing but VMware at VMWorld just announced (a minute back) that there are no more vRAM license entitlements. No vRAM, no per vm licensing model. Only per socket model which makes a lot of things easier. This was received with a lot of applause!

My First OpenStack Alamo Installation

This week, after I was able to create the containers, I had my first taste of Alamo deployed on my home environment.  I will write down step-by-step installation process in the next blog. The Alamo installation is very easy and comparable to ESX + a few extra options about passwords and networks.

Below is a screen shot of the console how it would look. Pretty similar to vmware’s ESX(i).
Also a really interesting article about Cloud computing, if you are trying to understand what it really and truly means is below. Its a 2009 article but gives you a decent idea about what its about.

Deploying OpenStack Alamo in a Nested ESX(i) box to test

So its exciting news that Rackspace has gone Open Cloud. However, very few of us have the luxury to run Open stack on its own dedicated controller/compute nodes, although an all-in-one configuration can be run. For instance, in my home lab, I am running it now as a nested hypervisor because that will allow me ample flexibility to get to know it.

If you are running vmware ESX(i) then you are in luck as the doc lists all the changes that you will need to do to the vm container in order to get OpenStack Alamo to run. Cody’s instructions on how to get the container ready helped greatly.

However, I have the OVA’s in here so you can download them. These containers, one for controller and the other for the compute node, have been preset with all changes necessary so your OpenStack Alamo installation will boot up with no issues. They are only 78KB each because they are empty containers 🙂 So clone them to multiple compute nodes as needed 🙂

Remember to change the cpu/ram/disk sizes as necessary. I marked disks as thin but if you have tons of disk to play with then you may delete and recreate it. These are empty containers and you can boot them up to the Alamo iso or cdrom.

Controller-Node – Download Here (78KB)

Compute-Node – Download Here (78KB)

Let me know if you run into problems!

How big is a snapshot by default?

So, I have been in the dark. (I attached a random pic not really of a snapshot :D)

I was under the impression that the snapshot in vmware – when a snapshot a snapshot is created will only be a few megabytes. Well I was wrong!
When a snapshot is created – the .vmsn which is the snapshot state file and stores the running state of the virtual machine – aka its RAM. So this will be = to the size of the RAM that is set for the virtual machine.
So if a virtual machine is with 16GB of RAM – then the .vmsn file which is created in a snapshot will be of that size 16GB!
Needless to say , the snapshot file which is the <vname>-Snapshot<###>.vmsn grows with the snapshot.

Welcome to rjapproves!

Hello there!


Thanks for stopping by, I will get started on posting stuff soon!