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Old 04-18-2013, 04:47 AM   #1
dman777
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Openstack Cloud Questions


I'm a newbie learning about Openstack. Concerning Openstack and creating a cloud using it...why would someone take a few servers that are hypervisors and add them to the cloud?
Why wouldn't a person just remove the hypervisor software and place the Openstack platform on it and then add the boxes to the cloud?
Or is it possible to take a server that has- for example- 3 kvm guests on it, place Openstack platform on it without wiping away the KVM host and it's guests, and add it to the openstack cloud? Would those 3 KVM guests still exist as KVM guests? Would their resources be expanded to the combined resources of the cloud?
 
Old 04-18-2013, 02:17 PM   #2
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Quote:
Originally Posted by dman777 View Post
why would someone take a few servers that are hypervisors and add them to the cloud?
because a cloud needs compute resources to run VMs, and hypervisors are exactly that

Quote:
Why wouldn't a person just remove the hypervisor software and place the Openstack platform on it and then add the boxes to the cloud?
which part of openstack do you mean?

Quote:
Or is it possible to take a server that has- for example- 3 kvm guests on it, place Openstack platform on it without wiping away the KVM host and it's guests, and add it to the openstack cloud? Would those 3 KVM guests still exist as KVM guests?
no

Quote:
Would their resources be expanded to the combined resources of the cloud?
no
 
Old 04-20-2013, 05:26 AM   #3
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Quote:
Quote:
Why wouldn't a person just remove the hypervisor software and place the Openstack platform on it and then add the boxes to the cloud?
which part of openstack do you mean?
I don't know....I'm pretty new to Openstack. I read Openstack documentation where it is compatible with hypervisors. I don't understand that if all it does is take the box/server and add it to the could for resources. At that point, I would guess a piece of the cloud is used for a new operating system. I don't see where a hypervisor fits in.
 
Old 04-20-2013, 08:11 AM   #4
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a hypervisor is needed to run VMs of course
 
Old 04-21-2013, 07:48 AM   #5
dman777
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I was under the impression that the Openstack software acts like a hypervisor where you partition part of the cloud and make a guest OS from it. If you have to partition a portion of the cloud, make a hypervisor, and from that hypervisor make guests....it seems like it isn't much different because regardless your still partitioning the cloud and placing a guest OS on it(this being a hypervisor is still a OS since all have their own kernel and most have busybox tools).
 
Old 04-21-2013, 10:45 AM   #6
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Quote:
Originally Posted by dman777 View Post
why would someone take a few servers that are hypervisors and add them to the cloud?
http://en.wikipedia.org/wiki/Cloud_c...Service_models
 
Old 04-21-2013, 03:15 PM   #7
dyasny
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Originally Posted by dman777 View Post
I was under the impression that the Openstack software acts like a hypervisor where you partition part of the cloud and make a guest OS from it.
no, it simply orchestrates other hypervisors

openstack is for building massive clouds a-la AWS, this is not the product you want for normal datacentre virtualization.
 
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Old 05-03-2013, 12:31 PM   #8
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From the little amount of time I've had playing on it, I get the impression that OpenStack is an open source take on a cross between vCenter Server or vCloud Director. Simply a centralized management point for multiple hypervisors.

Edit: Oh, and (yay!) first post.
 
Old 05-15-2013, 01:02 AM   #9
dyasny
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Originally Posted by nibrahv View Post
From the little amount of time I've had playing on it, I get the impression that OpenStack is an open source take on a cross between vCenter Server or vCloud Director. Simply a centralized management point for multiple hypervisors.

Edit: Oh, and (yay!) first post.
No it's not. For vcenter alternatives you need to look at ovirt/RHEV or something like proxmox. openstack is what you can use if you want to build your own IaaS cloud
 
Old 05-22-2013, 12:35 PM   #10
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Quote:
Originally Posted by nibrahv View Post
From the little amount of time I've had playing on it, I get the impression that OpenStack is an open source take on a cross between vCenter Server or vCloud Director. Simply a centralized management point for multiple hypervisors.

Edit: Oh, and (yay!) first post.
Sorry. No.

OpenStack is a very, very complex Cloud Cluster. Your discussion is more general, you should open CloudStacks massive documentation site and read into it. You'll be surprised.
 
  


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