[one-users] Cloud View with Persistent Image
Anandharaj Subramaniam
anandharaj.maniam at mimos.my
Sun Oct 12 19:39:57 PDT 2014
Hi Ruben,
Thank you very much for the updates. Looking forward to see some of this features in the upcoming version.
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Regards,
Anandharaj
From: Ruben S. Montero [mailto:rsmontero at opennebula.org]
Sent: Friday, October 10, 2014 10:14 PM
To: Nicolas Bélan; Anandharaj Subramaniam
Cc: users at lists.opennebula.org
Subject: Re: [one-users] Cloud View with Persistent Image
Hi
These two are on our radar and probably scheduled for the next release. I totally agree that we need to simplify the provision process even more.
About feature 1.
We have two issues:
[1] Clone a running VM. http://dev.opennebula.org/issues/2637
[2] Clone a template . http://dev.opennebula.org/issues/2051
Last one includes images (pretty much the procedure outlined by Anandharaj under "New VM request") and I think this will cover exactly your request.
About feature 2.
We want to add the ability to update any part of a template for VM, most of it can be done if the VM is running (eg. attach a new disk or nic). Others like memory can be resized when the VM is powered off. You would not need to update and recreate the template.
[3] http://dev.opennebula.org/issues/2065
So, I believe we can implement the workflow described by Anandharaj with these features (and exposing it through Cloud View)...
Thanks for your feedback!
Cheers
Ruben
On Fri, Oct 3, 2014 at 11:34 PM, Nicolas Bélan <nicolas.belan at gmail.com<mailto:nicolas.belan at gmail.com>> wrote:
Hi,
I have exactly the same pb, and same needs ...
I start think about a dedicated web service to handle that, but a shorter (quicker) way to achieve deployments would be nice !
I will follow this thread for feebacks too
Best regards,
NB
Le 02/10/2014 06:07, Anandharaj Subramaniam a écrit :
Hi All,
Just need some clarification and would like to get you guys feedback on managing VMs using OpenNebula in your environment.
Our current practice as below (using OpenNebula 4.2):
1. New VM request
- Clone existing image (master image) to a new image. All the images are persistent.
- Clone existing template (master template) to a new template.
- Update the new template – set cpu/vcpu, memory, image (point to newly created image), ip address, etc
- Instantiate the template
2. Update the spec of the VM
- Shutdown / delete the running VM
- Update the template belongs to that particular VM – e.g set the new memory size
- Instantiate the template
Note: a) In our setup, every VM will have their own template as per done in #1
b) Reason being update the template & re-instantiate instead of just update the memory in VM is because of #3 below
3. Repair the VM
- In some cases the VM’s filesystem will have some errors (eg: due to force shutdown / nfs issues) therefore require to run fsck using live CD.
- Image type CDROM cannot be attached thru VM list page (click on the VM -> storage tab)
- Update the VM’s template – add disk and choose the ISO image, choose boot = cdrom
- Instantiate the template and fix the errors using the live CD
- Shutdown / delete the running VM
- Update the VM’s template – remove the ISO image and choose boot = hd
- Instantiate the template
From the above scenario, anything that we are doing inefficiently? Im still new to this OpenNebula so appreciate you guys feedback / suggestion
Testing environment (OpenNebula 4.8)
To further understand on this OpenNebula, I have setup ONE 4.8 and testing the Cloud View and see how I can improve my operation / VM administration.
The way user can create VM in Cloud View is the one I need – user define the VM name, choose the template (OS), set the memory & CPU and launch it. Very simple. But unfortunately this only works with non-persistent image type. In my case, I cannot use non-persistent image because of the reason stated in #2 and #3 above.
So what I think Cloud View can be improved is:
- Based on config parameter (oned.conf -> ONE_DEPLOY=Persistent), when user create a VM, a template should be created and the image should be cloned as persistent image. This is kinda same behavior as “Save” VM with only different is the image persistent yes/no and template spec
- Able to attach / detach CDROM
Feel free to comment on this and provide some feedback.
--
Regards,
Anandharaj
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