[openstack-dev] [jacket] Introduction to jacket, a new project

zs okay22many at 163.com
Thu Mar 17 03:57:37 UTC 2016

Hi Shinobu,

There are some differences between clouds, the major task of jacket is how to shield the differences. So that jacket will not be an API gateway, it has the objects management and function processing, for example :
1.  Unified resource uuid allocation: When users call jacket resource create API, jacket will allocate the uuid for the resource according to jacket's uuid format, then jacket will associate it with the unique identification in provider cloud, because of the different uniqueidentification and the different behaviourin clouds.
    e.g.  a)  AWS can't support to create a volume from an AMI image and boot a virtual machine from a boot volume, so that when users create a volume from an image, jacket will just create a volume record in database, after the virtual machine is created in AWS, jacket will get the boot volume's uuid in AWS and write the relations into the mapping table in database.
            b) Creating a volume's snapshot, AWS will return a job id, and users will get the snapshot's id after the job startes. Jacket will return the snapshot's id in jacket, then jacket will query the snapshot's id in AWS and  write the relations into the mapping table in database.

2. Fake volume management: Some clouds have not the complete volume management, for example, VMware vCloud Director have no the boot volume object, and it can't support volume's backup and snapshot, so that jacket will implement these functions for this kind of clouds.

There will be more differences of clouds' behaviour and function. Jacket's target is to shield these differences and let users feel that they are using just one cloud.

Best Regards,
Kevin (Sen Zhang)

At 2016-03-17 05:47:35, "Shinobu Kinjo" <shinobu.kj at gmail.com> wrote:
>On Wed, Mar 16, 2016 at 9:58 PM, zs <okay22many at 163.com> wrote:
>> Hi Gordon,
>> Thank you for your suggestion.
>> I think jacket is different from tricircle. Because tricircle focuses on
>> OpenStack deployment across multiple sites, but jacket focuses on how to
>> manage the different clouds just like one cloud.  There are some
>> differences:
>> 1. Account management and API model: Tricircle faces multiply OpenStack
>> instances which can share one Keystone and have the same API model, but
>> jacket will face the different clouds which have the respective service and
>> different API model. For example, VMware vCloud Director has no volume
>> management like OpenStack and AWS, jacket will offer a fake volume
>> management for this kind of cloud.
>The Jacket will be kind of API gateway for different cloud systems, won't it?
>> 2. Image management: One image just can run in one cloud, jacket need
>> consider how to solve this problem.
>> 3. Flavor management: Different clouds have different flavors which can not
>> be operated by users. Jacket will face this problem but there will be no
>> this problem in tricircle.
>> 4. Legacy resources adoption: Because of the different API modles, it will
>> be a huge challenge for jacket.
>> I think it is maybe a good solution that jacket works to unify the API model
>> for different clouds, and then using tricircle to offer the management of  a
>> large scale VMs.
>> Best Regards,
>> Kevin (Sen Zhang)
>> At 2016-03-16 19:51:33, "gordon chung" <gord at live.ca> wrote:
>>>On 16/03/2016 4:03 AM, zs wrote:
>>>> Hi all,
>>>> There is a new project "jacket" to manage multiply clouds. The jacket
>>>> wiki is: https://wiki.openstack.org/wiki/Jacket
>>>>   Please review it and give your comments. Thanks.
>>>> Best Regards,
>>>> Kevin (Sen Zhang)
>>>i don't know exact details of either project, but i suggest you
>>>collaborate with tricircle project[1] because it seems you are
>>>addressing the same user story (and in a very similar fashion). not sure
>>>if it's a user story for OpenStack itself, but no point duplicating
>>> efforts.
>>>[1] https://wiki.openstack.org/wiki/Tricircle
>>>OpenStack Development Mailing List (not for usage questions)
>>>Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
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