Re: DR service for CloudStack

[mvs babu <mv...@outlook.com>]

Ilya, Thank you for your reply.


We are using XenServer 6.2/6.5. Is there any  open source product to replicate single VM of Xenserver like Hyper-V replica for Hyper-V?


Thank you,

Suneel Mallela.






Sent from Windows Mail





From: ilya
Sent: ‎Tuesday‎, ‎June‎ ‎30‎, ‎2015 ‎3‎:‎29‎ ‎AM
To: cloudusersusers





Suneel,

There is no magic DR solution at any point with any cloud platform. This 
usually means you have to have a strategy. CloudStack is just one of 
many components.

Things to consider:

1) Have you figured out the data replication for VMs or are you going to 
spin new VMs?
2) What will happen to your network model? Are you going to have 
identical number of hypervisors?
3) Storage?
4) DNS?
5) APPS?

** Figure out how you would make DR work without cloudstack (as if it 
was not there). **


Perhaps to simplify, have an identical set of DR servers and services 
with just slight change in IP schema and hostnames.

For example, if you primary site is 10.1.0.x/23 then i would do 
10.2.0.x/23 on DR side. - Assuming you have a clear mapping between each 
traffic type when it comes to guest, mgmt, storage, etc... Same for DNS 
servers and alike.

Same might apply for all your storage and hypervisors, you need clear 
mapping of before DR and after DR.

Once you figure out this logic, dump mysql from primary, run search and 
replace and import into DR cloudstack .

Assuming all bits matched and you have the VM Data on the other side 
replicated - with few more tweaks - this will work.

This is not the best approach, but rather a quick hack.

Much better approach would be to have your app data on replicated S3 
like storage where VMs are ephemeral things that are stood up and 
configure themselves on power on. you can use cloudstack userdata/metadata

Regards
ilya


On 6/26/15 5:56 AM, mvs babu wrote:
> I asked Alena and she replied me “shoot a mail in Apache CloudStack mailing list to get current state of the project”.
>
>
> And my DR (Disaster Recovery) requirement is below,
>
>
> I have hosted entire CloudStack setup in a datacenter. Suppose the datacenter is crashed, how can I up the same environment in a different datacenter within hours?
>
>
>
>
> Thank you,
> Suneel Mallela.
>
>
>
>
>
>
> From: Daan Hoogland
> Sent: ‎Friday‎, ‎June‎ ‎26‎, ‎2015 ‎6‎:‎21‎ ‎PM
> To: cloudusersusers
>
>
>
>
>
> I think you would have to ask Alena or Ctrix support. Also you would
> have to specify what you mean by DR service for me to make an educated
> guess. It can mean to many things.
>
> On Fri, Jun 26, 2015 at 2:38 PM, mvs babu <mv...@outlook.com> wrote:
>> Hello Daan, Thank you for your information.
>>
>>
>> Is there any other sources to achieve DR solution for CloudStack?
>>
>>
>>
>>
>> Thank you,
>>
>> Suneel Mallela
>>
>>
>>
>>
>>
>>
>> From: Daan Hoogland
>> Sent: ‎Friday‎, ‎June‎ ‎26‎, ‎2015 ‎3‎:‎25‎ ‎PM
>> To: cloudusersusers
>> Cc: dev@cloudstack.apache.org
>>
>>
>>
>>
>>
>> Suneel, Alena had written this for cloudplatform, citrix' product
>> based on cloudstack. I don't think it has been contributed back.
>>
>> On Fri, Jun 26, 2015 at 8:25 AM, mvs babu <mv...@outlook.com> wrote:
>>> Hello,
>>>
>>>
>>> I would like to use DR service for CloudSrtack. Found below useful video.
>>>
>>>
>>> https://www.youtube.com/watch?v=2YEXC3WNL0s
>>>
>>>
>>> Where can I get the status of this project and the source code?
>>>
>>>
>>> And can any one suggest how to achieve DR solution in CloudSrtack.
>>>
>>>
>>> Thank you,
>>>
>>> Suneel Mallela.
>>>
>>>
>>>
>>>
>>>
>>>
>>> Sent from Windows Mail
>>
>>
>> --
>> Daan
>
>