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From Paul Angus <paul.an...@shapeblue.com>
Subject RE: Restricting IP usage & Upgrading CloudStack & Live storage migration
Date Wed, 01 May 2019 19:19:17 GMT

- The models are 'native' if you like, definitely not workarounds.

- CloudStack is an orchestrator, it largely relies on the abilities of the hypervisors that
it orchestrates.  We add a little secret sauce here and there, but when it comes to basic
hypervisor functions, we leave it up to the hypervisor.


paul.angus@shapeblue.comĀ 
www.shapeblue.com
Amadeus House, Floral Street, London  WC2E 9DPUK
@shapeblue
  
 


-----Original Message-----
From: Razvan Rosca <razvan.rosca@gmail.com> 
Sent: 01 May 2019 19:57
To: users@cloudstack.apache.org
Subject: Re: Restricting IP usage & Upgrading CloudStack & Live storage migration

Hey Paul,

Thank you for your fast reply!

> There are a few different models that you can use.
Do any of these models work "by default", or they are "workarounds"
(similar to Proxmox / LXC)? Aka is this a native/direct solution that can be applied in the
VM creation flow?

> Yes CloudStack does support Xen Live Storage migration
I was referring to something *similar* with Xen Live Storage migration, not Xen Live Storage
"per se". Aka migrate a VM from a CloudStack node to another CloudStack node, natively, live,
without using a central storage.

Thank you,
Razvan Rosca

Skype: razvan.rosca
Tel: +40 731 059 660
Linkedin: https://www.linkedin.com/in/razvanrosca/
Facebook: https://fb.com/razvanrosca.com


On Wed, May 1, 2019 at 9:50 PM Paul Angus <paul.angus@shapeblue.com> wrote:

> Hi Razvan,
>
> - There are a few different models that you can use.  But in short - 'yes'
> you can have a model where an IP is allocated to a VM and the VM keeps it.
> - No, we spend a lot of time making sure that upgrades between all 
> versions work. Our versioning system requires that the API is backward 
> compatible and we can only break that with a major version upgrade 
> (say 4.x to 5.x )and that hasn't happened under Apache yet
> - Yes CloudStack does support Xen Live Storage migration - 
> http://docs.cloudstack.apache.org/en/latest/adminguide/storage.html?hi
> ghlight=live%20storage#storage-overview
>
> Cheers
>
> Paul.
>
>
>
> paul.angus@shapeblue.com
> www.shapeblue.com
> Amadeus House, Floral Street, London  WC2E 9DPUK @shapeblue
>
>
>
>
> -----Original Message-----
> From: Razvan Rosca <razvan.rosca@gmail.com>
> Sent: 01 May 2019 17:28
> To: users@cloudstack.apache.org
> Subject: Restricting IP usage & Upgrading CloudStack & Live storage
> migration
>
> Hello,
>
> We're thinking about switching from our current Xen+Proxmox setup into
> something more "advanced", and we're really considering CloudStack as one
> of our best/main candidates.
>
> Right off the bat here are the first questions:
>
>    - in our current setup users can freely use each other's IP address,
>    because the software stack doesn't enforce any limits (or requires us to
>    manually edit stuff each time a VM is created). Does CloudStack have the
>    same behavior? What we need is kinda simple: allow a specific VM to use
> a
>    specific IP, and only that IP.
>    - does CloudStack have the same "no-upgrade" policy as OpenStack?
>    Ugrading OpenStack was/is nearly impossible, so I'm wondering if this is
>    the case with CloudStack as well.
>    - does CloudStack support "live-migration" between local storages? Xen
>    does it, and does it really well. Again, I'm referring to local storage
>    (local HDD/SSD/NVMe), not a central Ceph/Gluster/NFS store.
>
> Thank you,
> Razvan Rosca
>
> Skype: razvan.rosca
> Tel: +40 731 059 660
> Linkedin: https://www.linkedin.com/in/razvanrosca/
> Facebook: https://fb.com/razvanrosca.com
>
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