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From Vadim Kimlaychuk <va...@kickcloud.net>
Subject Re: how to deploy VM on to dedicated cluster ?
Date Tue, 20 Oct 2015 06:12:48 GMT
Hello Yiping,

        There is also such functionality as "affinity groups". You may 
define group and all VMs from that group will be deployed "close to each 
other".  I don't know whether group could be hard-bounded to specific 
cluster. Probably not, because all hard-links are considered to be bad. 
Try to imagine -- what happens, if you have entire c1 down, but all 
other clusters are up ? Should client get deny of service just because 
it belongs to wrong domain? Think about your requirements. Why do you 
need such complicated rules?

Vadim.

On 2015-10-20 09:11, Vadim Kimlaychuk wrote:

> Hello Yiping,
> 
> There is also such functionality as "affinity groups". You may define 
> group and all VMs from that group will be deployed "close to each 
> other". I don't know whether group could be hard-bounded to specific 
> cluster. Probably not, because all hard-links are considered to be bad. 
> Try to imagine -- what happens, if you have entire c1 down, but all 
> other clusters are up ? Should client get deny of service just because 
> it belongs to wrong domain? Think about your requirements. Why do you 
> need such complicated rules?
> 
> Vadim.
> 
> On 2015-10-19 21:41, Yiping Zhang wrote:
> 
>> Hi, all:
>> 
>> I am trying to work out the best way of deploying VM's onto a 
>> dedicated cluster. Here is what my CloudStack setup looks like:
>> 
>> Domains: d1, d2, d3, d4
>> Clusters: c1 (dedicated to d1), c2 (not dedicated)
>> Currently, I am not using tags for hosts, storages, service offerings 
>> at all.
>> 
>> When I login to domains d2/d3/d4, and create new VM's, they will go to 
>> cluster c2. That's great as it is the intended results.
>> However, when I login to domain d1 and create new VM's, they can go to 
>> either cluster c1 or c2, but I would like VM's only go to c1.
>> 
>> Is using host/storage tags and matching tags in service offering the 
>> only way to achieve this goal ?
>> 
>> The reason I am reluctant to use tags is that leads to proliferation 
>> of service offerings, as the resulting number of SO could grow 
>> exponentially with the number of host/storage tags introduced.
>> 
>> Thanks,
>> 
>> Yiping

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