Open Stack

On 26/11/14 09:13, Maish Saidel-Keesing wrote:
> Thanks Pavlo.
>
> Is there any reason why FIFO was chosen?

I believe that this was the original termination policy on AWS, and that 
was the reason we chose it. It was used on AWS because if you deleted an 
instance that was just created you would be charged for a full hour, so 
it was cheaper on average to delete an older one. It appears from the 
docs[1] that they now do something more sophisticated by default (kill 
the one closest to the next billing hour, all else being equal) and also 
offer a bunch of different policies.

cheers,
Zane.

[1] 
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/AutoScalingBehavior.InstanceTermination.html

> Maish
> On 26/11/2014 12:30, Pavlo Shchelokovskyy wrote:
>> Maish,
>>
>> by default they are deleted in in the same order they were created,
>> FIFO style.
>>
>> Best regards,
>> Pavlo Shchelokovskyy.
>>
>> On Wed, Nov 26, 2014 at 12:24 PM, Maish Saidel-Keesing
>> <maishsk+openstack at maishsk.com <mailto:maishsk+openstack at maishsk.com>>
>> wrote:
>>
>>     In which order are machines terminated during a scale down action
>>     in an
>>     auto scaling group
>>
>>     For example instance 1 & 2 were deployed in a stack. Instances 3 & 4
>>     were created as a result of load.
>>
>>     When the load is reduced and the instances are scaled back down, which
>>     ones will be removed? And in which order?
>>
>>     From old to new (1->4) or new to old (4 -> 1) ?
>>
>>     Thanks
>>
>>     --
>>     Maish Saidel-Keesing
>>
>>
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>>
>>
>>
>>
>> --
>> Pavlo Shchelokovskyy
>> Software Engineer
>> Mirantis Inc
>> www.mirantis.com <http://www.mirantis.com>
>>
>>
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>
> --
> Maish Saidel-Keesing
>
>
>
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