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| openstackgerrit | Prashanth Pai proposed openstack/swift: Allow rsync to use compression https://review.openstack.org/148454 | 07:06 |
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| raies | anybody could give some light on openstack swift using ceph as a backend ?? | 07:48 |
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| raies | anybody can hekp on swift + ceph ?? | 08:57 |
| raies | zhiyan: hi | 09:13 |
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| raies_ | Anybody who can give some idea about swift + ceph ? | 12:27 |
| raies_ | notmyname: hi | 12:29 |
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| raies | notmyname: hi | 18:08 |
| raies | anybody can help me on swift and ceph backnd | 18:11 |
| raies | ?? | 18:11 |
| notmyname | raies: it's sunday morning for me, so I'm only in an out. do you have some specific questions? | 18:15 |
| raies | notmyname: sorry to disturb. I only have on query | 18:16 |
| raies | if you have 5 minutes ? | 18:16 |
| notmyname | ya | 18:17 |
| notmyname | no worries. If you were disturbing me, I wouldn't have answered ;-) | 18:17 |
| raies | notmyname: I have 1 node openstack, and 3 node ceph cluster (only ceph cluser ). | 18:18 |
| notmyname | ok | 18:18 |
| raies | only ceph cluster mean I have not configured object/rbd/file yet | 18:18 |
| raies | my motive - to test openstack object store APIs using tempest when backend is ceph objeect storage | 18:19 |
| raies | but unfortunately, I am unable to find suitable doc to integrate openstack and ceph object storage for this testing | 18:20 |
| raies | please help | 18:20 |
| notmyname | raies: to verify ceph's reimplementation to see what they aren't implementing or to verify tempest's coverage? | 18:20 |
| raies | notmyname: I need to check and verify all the API tests of tempest | 18:21 |
| raies | notmyname: and verify this when object storage backend is ceph | 18:21 |
| notmyname | you mean ceph's implementation of the swift api? | 18:22 |
| raies | I think yes. | 18:22 |
| notmyname | to restate, you want to run ceph (with radosgw for the swift api) and test that via tempest? | 18:23 |
| raies | yes | 18:23 |
| raies | thanks for restate | 18:23 |
| notmyname | just curious, why would you verify tempest, which tests openstack projects, against a non-openstack project like ceph? | 18:23 |
| raies | no no its not like that | 18:24 |
| raies | I am curious about, how is behaviour of openstack object storage APIs when object storage backnd is ceph | 18:25 |
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| notmyname | you want to see how much of the swift API coverage swift supports that the other openstack project use? | 18:26 |
| notmyname | ie is it possible to use radosgw instead of swift and everything still works from the perspective of the rest of openstack | 18:27 |
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| raies | notmyname: I just want to check and verify how opnstack object storage APIs (swift APIs) working good or not if swift storage backend is ceph | 18:28 |
| notmyname | ok | 18:28 |
| notmyname | doesn't that make the assumption that the features of the swift API that are used by other openstack projects will have test coverage in tempest? | 18:28 |
| notmyname | that's a rhetorical question | 18:28 |
| notmyname | here's what I'd suggest. two things, and you should do one or, ideally, both | 18:29 |
| notmyname | 1) run radosgw and register that in keystone as the object storage endpoint. run tempest and see what happens | 18:29 |
| notmyname | 2) run radosgw and then run the swift functional tests against that | 18:30 |
| raies | yes I am thinking of it, to see result. :) and next ? | 18:30 |
| notmyname | it's possible to run swift functional test against any routable host that you have | 18:30 |
| notmyname | ie they are black-box tests | 18:31 |
| notmyname | and they have pretty good coverage (probably much more than tempest, although I haven't looked at tempest recently) | 18:31 |
| raies | 2nd point is not much clear to me. | 18:31 |
| notmyname | the swift source tree includes functional tests | 18:31 |
| raies | ok | 18:31 |
| notmyname | you can run those against any endpoint claiming to implement the swift api | 18:32 |
| notmyname | the sample config is https://github.com/openstack/swift/blob/master/test/sample.conf | 18:32 |
| notmyname | the default testrunner in the swift source tree is https://github.com/openstack/swift/blob/master/.functests | 18:32 |
| raies | notmyname: in 2nd case I think, swift needed to be installed on openstack node ? | 18:33 |
| raies | but in 1st case, I think there is no need to install swift. am I right ? | 18:33 |
| notmyname | you can put that sample config in /etc/swift/test.conf and then rung the tests (./.functests) and it will execute against whatever endpoint you want | 18:33 |
| notmyname | no, you do not have to install swift. you'd just need the swift code. you don't have to install it | 18:34 |
| raies | notmyname: ok | 18:34 |
| raies | notmyname: Again I have one point - | 18:34 |
| raies | I have seen https://github.com/stackforge/swift-ceph-backend/tree/master/swift_ceph_backend also | 18:35 |
| raies | this tells that swift can be configured as ceph backend. | 18:35 |
| raies | notmyname: but I am not aware of how it will be. | 18:35 |
| notmyname | that's.....not ready, AFAIK | 18:35 |
| raies | notmyname: ok | 18:36 |
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| notmyname | raies: do you have what you need to get started? | 18:37 |
| raies | notmyname: actually I have checkd openstack swift APIs behaviour using tempest | 18:38 |
| raies | again I am planing to use swift backend as ceph | 18:39 |
| raies | for this setup at least I need to verify those APIs again using tempest | 18:39 |
| notmyname | raies: to be pedantic, you're planning on using ceph instead of swift, right? or are you using that stackforge project? | 18:40 |
| raies | notmyname:I am planing to use swift, but actual storage will be on my remote ceph cluster | 18:41 |
| raies | I have seen an article where it was told that swift can have file/ceph or other storage backends | 18:42 |
| raies | notmyname: so I was planing to integrate openstack(including swift) with ceph object storage | 18:43 |
| raies | like - http://www.ceph.com/docs/master/rbd/rbd-openstack/ | 18:43 |
| raies | in above link cinder and ceph are integrated. | 18:44 |
| raies | and now I want to integrate swift and ceph and then I would like to test swift APIs using tempest. | 18:44 |
| notmyname | raies: there's a lot of people using ceph as a block storage implementation | 18:45 |
| raies | notmyname: may be I am going in wrong direction or setup. Please correct me at this point. | 18:45 |
| notmyname | but the way swift an cinder work is different | 18:45 |
| notmyname | cinder is an abstraction layer for various block implementations | 18:45 |
| raies | ok. | 18:45 |
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| notmyname | swift is an object storage implementation | 18:45 |
| notmyname | so it doesn't make as much sense to say "I want to use swift with object implementation X" | 18:46 |
| notmyname | for whatever value of X | 18:46 |
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| raies | notmyname: please give me right direction as a I am new to to swift and storage domain. | 18:46 |
| raies | ok | 18:46 |
| notmyname | that being said, there is an extensibility point in swift that some people are using to integrate swift with other object storage systems (including ceph, per your stackforge link above) | 18:47 |
| raies | ok | 18:48 |
| notmyname | I gave a talk in paris on this topic https://www.openstack.org/summit/openstack-paris-summit-2014/session-videos/presentation/extensibility-in-swift | 18:48 |
| notmyname | but... | 18:49 |
| notmyname | in your case, what you do should flow from your use case | 18:49 |
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| notmyname | if you're looking for object storage just as a way to do cinder snapshots or glance image storage, then ceph is probably sufficient, since you're already using it. (assuming you don't need the geographic distribution features swift has) | 18:51 |
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| raies | notmyname: thanks for sharing link. I will check this. I was also there in paris during summit bbut unfortunately I could not visited you. | 18:51 |
| notmyname | but if you're looking for more of the "store a lot of unstructured data, keep it available, distribute it globally, support lots of requests" (eg web apps, mobile apps, backups with DR, game data, user-generated content, etc), then you should use swift | 18:52 |
| raies | notmyname: ok | 18:52 |
| notmyname | I need to run. do you have what you need to get started on your next step? | 18:53 |
| notmyname | raies: https://www.openstack.org/summit/openstack-paris-summit-2014/session-videos/presentation/swift-101-technology-and-architecture-for-beginners is an intro talk, and https://swiftstack.com/openstack-swift/ has a ton of info about swift (everything from design to use cases) | 18:54 |
| raies | For now, I m planing to store cinder snapshot and glance images. in later phase I will be planning on large unstructured data. | 18:54 |
| raies | notmyname: my last question - | 18:54 |
| notmyname | great! I look forward to hearing about your swift clusters ;-) | 18:54 |
| raies | can we test swift APIs using openstack (not installed swift) + ceph (radosgw) ?? (I am using tempest) | 18:55 |
| raies | notmyname: is it feasible ? | 18:56 |
| notmyname | I don't know how deep the functional (ie API) test coverage for swift is in tempest. you'll get better test coverage using the swift functional tests (as I described above), and that doesn't require installing swift | 18:56 |
| * notmyname goes afk for a while | 18:57 | |
| raies | notmyname: thanks for yor greate efforts to make me understood. the tests which are not covered in tempest, I will cover them once my setup is ready and working. | 18:58 |
| raies | notmyname: thanks one again for your help. If I am coing to next summit. I will meet you :) :) | 18:59 |
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