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From Marty Godsey <>
Subject RE: Advantages and disadvantages of installing CloudStack manager in a virtual machine within the host.
Date Wed, 07 Sep 2016 13:32:05 GMT
I could understand the reasoning and it could be done, however you lose a lot of what makes
Cloudstack the orchestration software it is. Here are a few disadvantages to doing it this

1. You could not manage the ACS control node through ACS which means you couldn’t migrate
it add disks to it, get to the console, etc via ACS. You would have to do it all via the hypervisor
2. Since ACS doesn't know about it, it can't report on the hyper-visor usage or storage usage
which means your usage graphs and records will always be "off" a little.
3. Simple tasks such as putting hosts in maintenance and hypervisor upgrades now become more
tedious since you have a guest on the hypervisor that ACS doesn't know about to work around.

I could write a few more but as you can see, it really is not a good idea. I do the same as
the other responder. I run my ACS management nodes on another cluster that is not part of
the ACS cluster. This allows me to let ACS fully control those hypervisors.

Marty Godsey

-----Original Message-----
From: Outback Dingo [] 
Sent: Sunday, September 4, 2016 11:28 AM
Subject: Re: Advantages and disadvantages of installing CloudStack manager in a virtual machine
within the host.

On Sun, Sep 4, 2016 at 2:42 AM, Rene Moser <> wrote:

> Hi
> On 09/03/2016 10:27 PM, Jhon Jaro wrote:
> > I have the following query, that would have advantages and 
> > disadvantages install CloudStack manager in a virtual machine running on the host.
> I don't see any disadvantages in running the CloudStack manager on a 
> VM, however the host on which the CloudStack manager VM runs must not 
> be managed by CloudStack.

i kind of dont follow the logic here. id be curious why it should run on another cluster/machine
simply put cloudstack in a vm on a host should be intelligent enough to discover itself, and
if it isnt architecturally someones missed the design boat.

> You get all the advantages you normally get by the hypervisor, in our 
> case VMware: Snapshots, Live Migration, DRS. HA.  We run the 
> CloudStack manager on VMware in a different cluster.
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