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From Tamas Monos <>
Subject RE: Joined vcenter servers with cloudstack
Date Wed, 23 May 2012 20:55:57 GMT

I'm using vSphere 4.1 update2 and ESX servers with enterprise licenses. I don't know anything
about any vcenter-heartbeat
I'm aware ESX is officially not supported by CS but works fine. I'll give it a go on my sandbox

Kind regards

-----Original Message-----
From: Anantha Kasetty [] 
Sent: 23 May 2012 21:39
Subject: Re: Joined vcenter servers with cloudstack


   If I understand this correctly,  you want the same ESXi cluster to be managed by multiple
vCenters and put a http/s proxy in front to do the switchover when one of the vCenter fails
or brought down for maintenance.
The issue is that a given ESXi host/cluster cannot be managed by more than one vCenter at
the same time.  There is only one vCenter managing a host/cluster any given time.  I am not
aware of a feature that allows a single cluster to be managed by different vCenters.

    You might want to look into the VMware Heartbeat product,,

Anantha Kasetty

On 5/23/12 1:20 PM, "Tamas Monos" <> wrote:

>I'm thinking to use a "http/s" proxy in front of the vcenters if the
>master fails the proxy will redirect to the slave.
>DNS would be too slow I think.
>Thanks for your help.
>-----Original Message-----
>From: Kelven Yang []
>Sent: 23 May 2012 19:34
>Subject: RE: Joined vcenter servers with cloudstack
>> -----Original Message-----
>> From: Tamas Monos []
>> Sent: Tuesday, May 22, 2012 3:53 PM
>> To:
>> Subject: Joined vcenter servers with cloudstack
>> Hi,
>> I'm wondering whether anyone uses multiple vcenter servers in joined
>> mode with Cloudstack.
>> The reason I'm asking is every time I need to update the win2k8
>> servers is an outage and takes ages for the box to come back.
>> As the management servers are in cluster I can update OS one by one
>> but the vcenter box.
>> Would Cloudstack be confused if I added a the same cluster on a
>> different vcenter management IP as well? So when one of the of offline
>> it would talk to the other one as in joined mode you can manage other
>> vcenter's assets.
>> I'm not brave enough to test this in my production environment though.
>I haven't tested with vCenter linked mode, but if the second vCenter is
>using a different IP, I see it as an issue.
>I would suggest you to try using DNS to do the trick, while you are
>maintaining one vCenter server, make DNS point to the second one for
>CloudStack to continue to work
>> Regards
>> Tamas Monos                                               DDI
>> +44(0)2034687012
>> Chief Technical                                             Office
>> +44(0)2034687000
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