Open Stack

Hi,


keystone is the authentication method.

my doubt in keystone Identity Service.

When alice launch an instance

1st credentials are sent : what credentials are sending ? is it the admin
token?

please put an example to show what is the credential and catalog,token etc
the whole process so that will have a better understanding what is
happening.

********************************************************************************************************************


Thanks for the information. very useful. 100%. Community Rocks :)

 Glance supports Swift as the storage media:

 I have modified glance api and registry conf files and added default store
as swift.

 Now I want to know where the image will get stored. ( Meaning inside
glance path or swift path )

 /var/lib/images which is the default path for glance image or

/srv/node/sda1/......" which is the newly created swift image store.


Note: In my configuration default glance storage is full. so its getting
created inside /srv/node/sda1 as

[root at controller objects]# pwd
/srv/node/sda1/objects
[root at controller objects]# ls
105444  122879  132822  139239  159355  181200  189036  212398  223406
250266  259217  30947  46999  51604  65854  72820  7975   90548
106819  122971  136641  149423  160195  187691  189342  215661  233311
251951  261667  32084  49690  61386  70617  73398  83357  98863
117245  130012  138254  155367  17167   188426  192918  222168  234219
258413  30213   35890  51350  6258   70880  78850  89722


[root at controller objects]# cd 10
105444/ 106819/
[root at controller objects]# cd 105444/
[root at controller 105444]# ls
211  hashes.pkl
[root at controller 105444]# cd 211/
[root at controller 211]# ll
total 0
drwxr-xr-x 2 swift swift 34 Jun  5 15:41 66f901ec5d1500a3d3a3d7fe06f2b211
[root at controller 211]# cd 66f901ec5d1500a3d3a3d7fe06f2b211/
[root at controller 66f901ec5d1500a3d3a3d7fe06f2b211]# ll
total 200004
-rw------- 1 swift swift 204800000 Jun  5 15:41 1401963066.63643.data
[root at controller 66f901ec5d1500a3d3a3d7fe06f2b211]# file
1401963066.63643.data
1401963066.63643.data: data


Is everything Ok ?  Anything I can do make it look better . I mean to show
this in dashboard.

Regards,
Dhanesh.


On Wed, Jun 4, 2014 at 11:12 AM, Kuo Hugo <tonytkdk at gmail.com> wrote:

> Btw, you can place OpenStack Swift as the secondary storage of CloudStack
> as well. OpenStack Swift can work as an independent component without any
> other OpenStack components.
>
>
>
>
> 2014-06-04 13:39 GMT+08:00 Kuo Hugo <tonytkdk at gmail.com>:
>
> Hi Dhanesh,
>>
>> Before answering the questions, I'd like to know what's the
>> authentication mechanism of your Swift instance ? (Keystone or TempAuth)
>>
>>  As an admin i can access container and i can upload files.
>>> what about users inside a project. After giving reselleradmin access to
>>> the project, user is also able to upload files
>>>
>>
>> In case of Swift integrates with Keystone, you can grant
>> roles-tenant-user relationship inside keystone. Swift is able to allow
>> specific roles for accessing particular project(swift account).
>>
>> There're two essential middlewares for leveraging Keystone as the
>> authentication server for Swift.
>>
>>    - keystoneauth
>>    - tokenauth
>>
>> The authtoken middleware will take care of validating the user
>> and keystoneauth will authorize access. You can specify permit roles in
>> keystoneauth(
>> https://github.com/HugoKuo/swift/blob/master/etc/proxy-server.conf-sample#L280-L282
>> )
>>
>> So an user with role in operator or reselleradmin means the user is
>> capable to operate on the Swift account(project).
>>
>>
>>>
>>> what are the uses of swift in openstack?
>>>
>>
>> Various use cases of OpenStack Swift. As far as your question, Swift is
>> used for storing instance's raw-images and snapshots with high
>> availability(3 replicas in general).
>>
>> Besides images and snapshots, you can store *any data(especially static
>> data)* inside Swift for high availability.
>>
>>
>>> How is it useful as a storage?
>>>
>>
>> Object Storage Capabilities
>>
>>    - OpenStack provides redundant, scalable object storage using
>>    clusters of standardized servers capable of storing petabytes of data
>>    - Object Storage is not a traditional file system, but rather a
>>    distributed storage system for static data such as virtual machine images,
>>    photo storage, email storage, backups and archives. Having no central
>>    "brain" or master point of control provides greater scalability, redundancy
>>    and durability.
>>    - Objects and files are written to multiple disk drives spread
>>    throughout servers in the data center, with the OpenStack software
>>    responsible for ensuring data replication and integrity across the cluster.
>>    - Storage clusters scale horizontally simply by adding new servers.
>>    Should a server or hard drive fail, OpenStack replicates its content from
>>    other active nodes to new locations in the cluster. Because OpenStack uses
>>    software logic to ensure data replication and distribution across different
>>    devices, inexpensive commodity hard drives and servers can be used in lieu
>>    of more expensive equipment.
>>
>>
>>
>>> what are the datas we can store inside it?
>>>
>>
>> Photos, VM images, Video, archive, document etc. Good for any data that
>> doesn't be edited frequently. Frequently means the data is needed to be
>> updated every seconds or mins.
>>
>>
>>> Will it work like glance?
>>>
>>
>> Glance is a layer to mange images with two major parts, database and
>> storage media. By default, Glance stores images raw data on local volume
>> and metadata in a database(e.g. Mysql). Glance supports Swift as the
>> storage media that you can find the configurations over here (
>> https://github.com/openstack/glance/blob/master/etc/glance-api.conf#L299
>> ).
>>
>> So Swift coordinates with Glance instead of replacing Glance in OpenStack
>> platform.
>>
>>
>>
>>> In cloudstack we have primary storage and secondary storage. what is the
>>> role of swift or object store in opensatck in admin level and project (user
>>> )level.
>>>
>>
>>  Swift is more like the secondary storage of CloudStack.
>>
>>
>>>
>>> Still not clear about swift storage. guide me on this
>>
>>
>> Hope it help
>>
>> Hugo Kuo
>> SwiftStack Inc.
>>
>>
>>
>
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