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From Mathias Mullins <mathias.mull...@citrix.com>
Subject Re: XenServer and VMWare Cluster, same Zone/Pod
Date Mon, 04 Mar 2013 19:53:21 GMT
No, not really. 

A Zone, is a logical segmentation of separate Infrastructure. Usually
because of the differences in Xen and ESX, you're going to find many of
those Infrastructure components different. PODs usually separate at L2
separation. Zones can separate at L3 points.

Many companies are known to have multiple security or routing zones within
a single data center. So the concept is no truly that of a single DC.

Matt Mullins
CloudPlatform Implementation Engineer
Worldwide Cloud Services – Citrix System, Inc.
+1 (407) 920-1107 – Office/Cell Phone
matt.mullins@citrix.com






On 3/4/13 2:40 PM, "Francois Gaudreault" <fgaudreault@cloudops.com> wrote:

>However, don't you think it breaks the concept of a "Zone" being a "Data
>Center"?
>
>To me,  one could/should be able to run clusters with different
>hypervisors within the same pod.
>
>I might just be a little too picky on terms tho :P
>
>
>On 2013-03-04 2:26 PM, Ahmad Emneina wrote:
>> +1 to separate zones. thats def. the best practice we preach.
>>
>>
>> On Mon, Mar 4, 2013 at 11:22 AM, Mathias Mullins
>><mathias.mullins@citrix.com
>>> wrote:
>>> While you can do it as both Francois and Geoff have said. I can tell
>>>you
>>> that our "Best Practice" that we implement with is that they be
>>>separate
>>> zones to avoid as many of problems and complex configurations as
>>>possible.
>>>
>>> Matt Mullins
>>> CloudPlatform Implementation Engineer
>>> Worldwide Cloud Services ­ Citrix System, Inc.
>>> +1 (407) 920-1107 ­ Office/Cell Phone
>>> matt.mullins@citrix.com
>>>
>>>
>>>
>>> On 3/4/13 2:20 PM, "Francois Gaudreault" <fgaudreault@cloudops.com>
>>>wrote:
>>>
>>>>> Just to confirm, you can create a Cloud with a single Zone,
>>>>>containing
>>>>> both XenServer Clusters and VMware Clusters, but you should create
>>>>> unique PODs, one for XenServer and one for VMware
>>>> This should be documented :P (or maybe it is)
>>>>> Because XenServer uses LinkLocal and VMware does not, the Reserved IP
>>>>> Ranges for each POD will be significantly different.
>>>>>
>>>>> Regarding System VMs, there is a Global Setting which allow you to
>>>>> control which Hypervisor the System VMs will prefer, its
>>>>> 'system.vm.default.hypervisor' if you do not set this, it typically
>>>>> creates them on the first available Cluster, then sticks with that
>>>>> Hypervisor type.
>>>>>
>>>>> Changing that global setting, restarting the management service, then
>>>>> destroying the system VMs will see them move from one type of
>>>>>hypervisor
>>>>> to another, I have done this many time, so if it's not working, you
>>>>>have
>>>>> a problem somewhere.
>>>> That explains couple issues I had with the VRs.  They were constantly
>>>> trying to launch on the last added cluster (in my case VMWare).
>>>>
>>>> Thanks for the precisions Geoff!
>>>>
>>>> Francois
>>>>> Regards
>>>>>
>>>>> Geoff Higginbottom
>>>>>
>>>>> D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581
>>>>>
>>>>> geoff.higginbottom@shapeblue.com
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: Ahmad Emneina [mailto:aemneina@gmail.com]
>>>>> Sent: 04 March 2013 19:04
>>>>> To: Cloudstack users; fgaudreault@cloudops.com
>>>>> Subject: Re: XenServer and VMWare Cluster, same Zone/Pod
>>>>>
>>>>> this is odd indeed, have you tried these actions against homogenous
>>>>> clouds?
>>>>> I wonder that to see if this can be reproduced to see if its an
>>>>> environmental issue vs mixed cloud bug.
>>>>>
>>>>>
>>>>> On Mon, Feb 25, 2013 at 1:02 PM, Francois Gaudreault <
>>>>> fgaudreault@cloudops.com> wrote:
>>>>>
>>>>>> Ok, so restarting the management service resolve a part of it.
>>>>>> Templates are now available and on the filesystem.
>>>>>>
>>>>>> Now I am facing another issue, I cannot deploy a VM from any
>>>>>>template
>>>>>> on the VMWare Cluster (VR template included).  I keep getting :
>>>>>>
>>>>>> WARN  [agent.manager.**AgentManagerImpl] (Job-Executor-21:job-102)
>>>>>> Unsupported Command: Unsupported command
>>>>>>issued:com.cloud.agent.api.**
>>>>>> storage.**PrimaryStorageDownloadCommand. Are you sure you got the
>>>>>> right type of server?
>>>>>> ERROR [cloud.vm.**VirtualMachineManagerImpl]
>>>>>>(Job-Executor-21:job-102)
>>>>>> Failed to start instance VM[DomainRouter|r-19-VM]
>>>>>> java.lang.ClassCastException:
>>>>>>com.cloud.agent.api.**UnsupportedAnswer
>>>>>> cannot be cast to com.cloud.agent.api.storage.**
>>>>>> PrimaryStorageDownloadAnswer
>>>>>>       at com.cloud.template.**TemplateManagerImpl.**
>>>>>> prepareTemplateForCreate(**TemplateManagerImpl.java:663)
>>>>>>       at com.cloud.utils.db.**DatabaseCallback.intercept(**
>>>>>> DatabaseCallback.java:34)
>>>>>>       at com.cloud.storage.**StorageManagerImpl.**createVolume(**
>>>>>> StorageManagerImpl.java:3448)
>>>>>> [...]
>>>>>> INFO  [vmware.resource.**VmwareResource]
>>>>>> (DirectAgent-436:172.30.100.**31) Executing resource StopCommand:
>>>>>> {"isProxy":false,"vmName":"r-** 19-VM","wait":0} INFO
>>>>>> [vmware.resource.**VmwareResource] (DirectAgent-436:172.30.100.**31)
>>>>>> VM r-19-VM is no longer in vSphere WARN
>>>>>> [cloud.network.**NetworkManagerImpl] (Job-Executor-21:job-102) Can't
>>>>>> get the physical network INFO
>>>>>>[cloud.vm.**VirtualMachineManagerImpl]
>>>>>> (Job-Executor-21:job-102) Unable to contact resource.
>>>>>> com.cloud.exception.**AgentUnavailableException: Resource [Host:10]
>>>>>>is
>>>>>> unreachable: Host 10: Unable to start instance due to
>>>>>> com.cloud.agent.api.
>>>>>> **UnsupportedAnswer cannot be cast to com.cloud.agent.api.storage.**
>>>>>> PrimaryStorageDownloadAnswer
>>>>>>       at com.cloud.vm.**VirtualMachineManagerImpl.**advanceStart(**
>>>>>> VirtualMachineManagerImpl.**java:847)
>>>>>>       at com.cloud.vm.**VirtualMachineManagerImpl.**start(**
>>>>>> VirtualMachineManagerImpl.**java:472)
>>>>>>       at com.cloud.network.router.**VirtualNetworkApplianceManager**
>>>>>> Impl.start(**VirtualNetworkApplianceManager**Impl.java:2352)
>>>>>> [...]
>>>>>> Caused by: java.lang.ClassCastException:
>>>>>> com.cloud.agent.api.**UnsupportedAnswer
>>>>>> cannot be cast to com.cloud.agent.api.storage.**
>>>>>> PrimaryStorageDownloadAnswer
>>>>>>       at com.cloud.template.**TemplateManagerImpl.**
>>>>>> prepareTemplateForCreate(**TemplateManagerImpl.java:663)
>>>>>>       at com.cloud.utils.db.**DatabaseCallback.intercept(**
>>>>>> DatabaseCallback.java:34)
>>>>>>       at com.cloud.storage.**StorageManagerImpl.**createVolume(**
>>>>>> StorageManagerImpl.java:3448)
>>>>>>       at com.cloud.storage.**StorageManagerImpl.prepare(**
>>>>>> StorageManagerImpl.java:3351)
>>>>>>       at com.cloud.vm.**VirtualMachineManagerImpl.**advanceStart(**
>>>>>> VirtualMachineManagerImpl.**java:754)
>>>>>>       ... 33 more
>>>>>> INFO  [vmware.resource.**VmwareResource]
>>>>>> (DirectAgent-252:172.30.100.**31) Executing resource StopCommand:
>>>>>> {"isProxy":false,"vmName":"i-** 2-20-VM","wait":0} INFO
>>>>>> [vmware.resource.**VmwareResource] (DirectAgent-252:172.30.100.**31)
>>>>>> VM i-2-20-VM is no longer in vSphere
>>>>>>
>>>>>> The weird thing is that I can deploy a VM using an ISO just fine...
>>>>>> Any clues?
>>>>>>
>>>>>> Thanks!
>>>>>>
>>>>>>
>>>>>> On 2013-02-25 11:26 AM, Francois Gaudreault wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> Just a quick question, is there any issues that we might face
if we
>>>>>>> have a XenServer Cluster and a VMWare Cluster in the same pod/zone?
>>>>>>> Will CloudStack spin 1 SystemVM for each hypervisor?
>>>>>>>
>>>>>>> I am seeing that the system vm template for vSphere says "download
>>>>>>> complete", but without any size in the UI/Database. The default
>>>>>>> template for vSphere will not download as well. We are on CS
4.0.1
>>>>>>>
>>>>>>>               id: 2
>>>>>>>          host_id: 5
>>>>>>>      template_id: 8
>>>>>>>          created: 2013-02-22 15:05:03
>>>>>>>     last_updated: 2013-02-22 15:05:03
>>>>>>>           job_id: NULL
>>>>>>>     download_pct: 100
>>>>>>>             size: 0
>>>>>>>    physical_size: 0
>>>>>>> download_state: DOWNLOADED
>>>>>>>        error_str: NULL
>>>>>>>       local_path: NULL
>>>>>>>     install_path: template/tmpl/1/8/
>>>>>>>              url:
>>>>>>> http://download.cloud.com/**templates/burbank/burbank-**
>>>>>>>
>>>>>>> systemvm-08012012.ova<
>>> http://download.cloud.com/templates/burbank/burba
>>>>>>> nk-systemvm-08012012.ova>
>>>>>>>        destroyed: 0
>>>>>>>          is_copy: 0
>>>>>>>
>>>>>>> Thanks for help!
>>>>>>>
>>>>>>>
>>>>>> --
>>>>>> Francois Gaudreault
>>>>>> Architecte de Solution Cloud | Cloud Solutions Architect
>>>>>> fgaudreault@cloudops.com
>>>>>> 514-629-6775
>>>>>> - - -
>>>>>> CloudOps
>>>>>> 420 rue Guy
>>>>>> Montréal QC  H3J 1S6
>>>>>> www.cloudops.com
>>>>>> @CloudOps_
>>>>>>
>>>>>>
>>>>> ShapeBlue provides a range of strategic and technical consulting and
>>>>> implementation services to help IT Service Providers and Enterprises
>>>>>to
>>>>> build a true IaaS compute cloud. ShapeBlue¹s expertise, combined with
>>>>> CloudStack technology, allows IT Service Providers and Enterprises to
>>>>> deliver true, utility based, IaaS to the customer or end-user.
>>>>>
>>>>> ________________________________
>>>>>
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>>>>> upon its contents, nor copy or show it to anyone. Please contact the
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>>>>
>>>> --
>>>> Francois Gaudreault
>>>> Architecte de Solution Cloud | Cloud Solutions Architect
>>>> fgaudreault@cloudops.com
>>>> 514-629-6775
>>>> - - -
>>>> CloudOps
>>>> 420 rue Guy
>>>> Montréal QC  H3J 1S6
>>>> www.cloudops.com
>>>> @CloudOps_
>>>>
>>>
>
>
>-- 
>Francois Gaudreault
>Architecte de Solution Cloud | Cloud Solutions Architect
>fgaudreault@cloudops.com
>514-629-6775
>- - -
>CloudOps
>420 rue Guy
>Montréal QC  H3J 1S6
>www.cloudops.com
>@CloudOps_
>


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