| Posted | Nick | Remark | |
|---|---|---|---|
| #openstack-nova - 2017-06-20 | |||
| 13:32:30 | edleafe | sfinucan: yeah, just one. No per-cell schedulers | |
| 13:32:43 | sfinucan | Gotcha. Thank you :) | |
| 13:32:53 | edleafe | np | |
| 13:33:22 | dtantsur | speaking of which, is there something like "nova cells 101" for absolute beginners? | |
| 13:33:47 | sfinucan | dtantsur: dansmith's talk from the ATL summit it excellent | |
| 13:34:00 | edleafe | sfinucan: remember that what I called the "current flow" isn't what has merged into master; it was the design agreed to before the recent changes | |
| 13:34:02 | kashyap | Yeah, was about to suggest that | |
| 13:34:05 | dtantsur | sfinucan: cool! I've found something from ATX right now | |
| 13:34:35 | sfinucan | edleafe: Yup, I haven't bothered including the "current flow" - just the new one | |
| 13:34:46 | sfinucan | and can -WIP it til code is merged | |
| 13:34:48 | mriedem | dtantsur: those are also linked here https://docs.openstack.org/developer/nova/cells.html | |
| 13:34:57 | edleafe | sfinucan: ok cool | |
| 13:35:10 | dtantsur | sweet. thanks mriedem | |
| 13:35:15 | boolman | bhagyashris: the [placment] section is there, configured and all. ( if missing or incorrect the nova-compute wont start ) | |
| 13:35:22 | dansmith | dtantsur: oh you probably have some control services in your cell0 and some computes in cell1, with the same id | |
| 13:35:26 | dansmith | dtantsur: you need mriedem | |
| 13:35:29 | dansmith | er | |
| 13:35:32 | dtantsur | dansmith: this is definitely the case | |
| 13:35:37 | dtantsur | or wait | |
| 13:35:39 | dansmith | dtantsur: you need mriedem's set which is converting that API to uuids | |
| 13:35:47 | dtantsur | what is cell1? | |
| 13:36:03 | dansmith | dtantsur: I just mean "the other cell that is not cell0, the real one" | |
| 13:36:15 | dtantsur | aha | |
| 13:36:29 | dtantsur | so, sorry, what do I need? is there some patch up? | |
| 13:36:49 | mriedem | dtantsur: https://review.openstack.org/#/q/status:open+project:openstack/nova+branch:master+topic:bp/service-hyper-uuid-in-api | |
| 13:37:00 | mriedem | is the wip for converting os-services and os-hypervisors APIs to use uuids | |
| 13:37:17 | dansmith | mriedem: the -2 on that is for microversion sequencing I assume? | |
| 13:37:22 | mriedem | dansmith: yes | |
| 13:37:25 | mriedem | those need to go together | |
| 13:37:30 | mriedem | well, they do'nt need to | |
| 13:37:32 | mriedem | but we said they would | |
| 13:37:49 | dansmith | oh I see the one behind it? | |
| 13:37:52 | mriedem | only thing left in os-hypervisors at the top is docs and paging | |
| 13:38:14 | dtantsur | does it mean that I'll have to stop referring to host names when adding them to aggregates? please pardon my ignorance, I'm not sure how it solves the problem in question | |
| 13:38:16 | dansmith | he needs services | |
| 13:38:39 | dansmith | dtantsur: oh are you getting that while querying for a service by hostname? | |
| 13:39:08 | dtantsur | dansmith: I'm doing $ openstack aggregate add host baremetal-hosts overcloud-controller-0.localdomain | |
| 13:39:20 | dtantsur | do add the ironic host to an aggregate | |
| 13:39:38 | dansmith | I see | |
| 13:39:40 | dtantsur | which may be not a perfect approach to a problem of hybrid bm-vm environment, but that's what we do now | |
| 13:39:42 | dansmith | let me look a bit | |
| 13:40:26 | dansmith | ohhh | |
| 13:40:42 | dtantsur | I don't like this "ohhh" :) | |
| 13:40:43 | dansmith | because you have multiple per host maybe | |
| 13:40:57 | dansmith | hang on, I have no coffee in my system. this is not good. | |
| 13:41:05 | dtantsur | multiple what? I definitely have only one nova-compute process per host.. | |
| 13:41:09 | boolman | Hi guys, I'm having trouble with a new deployment.. I'm using juju to deploy ocata, so all the configuration is automated, and yes I have the [placement] section. and I seem to have issues with my compute-nodes/placement API, http://ix.io/xHP http://ix.io/xHO | |
| 13:41:19 | dtantsur | dansmith: sure, lack of coffee is an urgent priority bug :) | |
| 13:42:25 | dansmith | dtantsur: hmm, no this should work.. are you running control services on the same node as a compute? | |
| 13:42:33 | dtantsur | dansmith: I am | |
| 13:42:40 | dansmith | dtantsur: with different config files I assume? | |
| 13:42:54 | dtantsur | dansmith: I don't think so actually | |
| 13:43:12 | dansmith | dtantsur: if not then they wouldn't be in different cells... | |
| 13:43:32 | dtantsur | are cells assigned via nova.conf? | |
| 13:43:50 | dansmith | no, but which cell you check into is determined by which database url you have configured | |
| 13:44:32 | dtantsur | hmm, ok. these hosts may indeed end up in a wrong cell.. however, it does not quite explain to me why we have duplicate hosts exception | |
| 13:44:50 | dansmith | well, | |
| 13:44:51 | dansmith | if they | |
| 13:44:53 | dansmith | are in different cells, | |
| 13:45:28 | dansmith | and they both report the same hostname, then there are multiple services with the same hostname but in different cells | |
| 13:46:09 | dtantsur | they = who? for now it seems that I have nova-api, scheduler and ironic's computes in one cell, then real compute in another | |
| 13:46:18 | dansmith | right | |
| 13:46:30 | dansmith | they = any service (n-api, n-cpu, etc) | |
| 13:46:49 | dansmith | since they have the same hostname as what n-cpu is reporting, | |
| 13:47:13 | dansmith | we could look that service up to find the cell, but end up getting the wrong one | |
| 13:47:22 | dansmith | which is why we now check for dupes and fail if the result is ambiguous | |
| 13:47:41 | dansmith | dtantsur: can we check to see if they are using the same config and thus reporting into the same cell for the moment? | |
| 13:49:02 | dtantsur | dansmith: I have only one nova.conf (provided by puppet, I guess), so I think that's the case | |
| 13:49:11 | dtantsur | I still don't quite understand why the result is ambiguos | |
| 13:49:20 | dansmith | actually, that query should be looking specifically for a nova-compute service, which shouldn't be duplicated if you only have one compute | |
| 13:49:26 | dansmith | dtantsur: that's what we're trying to find out | |
| 13:49:30 | dtantsur | right | |
| 13:49:43 | dansmith | dtantsur: can you dump the services table for your cell0 and other cell databases for me? | |
| 13:49:55 | dtantsur | lemme try | |
| 13:51:07 | dtantsur | dansmith: there are 3 databases, I guess I need one that is "nova", not "nova_api" or "nova_placement". right? | |
| 13:52:43 | alex_xu | edleafe: not sure what I should do for required traits | |
| 13:53:01 | dansmith | dtantsur: you should have nova and nova_cell0 | |
| 13:54:02 | dtantsur | ok, lemme see | |
| 14:01:00 | dtantsur | dansmith: ok, cell0 is empty. lemme fetch another one for you | |
| 14:02:33 | dansmith | cell0.services you mean right? | |
| 14:02:50 | dansmith | that's what I would expect if you're all pointing at the other cell | |
| 14:02:54 | dansmith | but I'm not sure how we're hitting that not unique error then | |
| 14:02:58 | dansmith | oh, | |
| 14:03:04 | edleafe | alex_xu: I would mimic what was done for custom resources, but using the 'traits:' prefix. Not too sure how to distinguish required vs. preferred | |
| 14:03:05 | dansmith | unless you have two cell records for the same cell? | |
| 14:03:26 | dansmith | dtantsur: also in nova_api, dump out the cell_mapping table please | |
| 14:03:39 | dtantsur | sure, gimme a second | |
| 14:03:56 | dtantsur | I need to figure out how to escape column names in mysql (binary is a reserved word, apparently) | |
| 14:04:16 | alex_xu | edleafe: but really want to understand the reason why we continue put something in the extra spec first | |
| 14:04:21 | dansmith | dtantsur: heh | |
| 14:04:51 | dansmith | dtantsur: I think if you use the full path it'll work, i.e.: SELECT services.binary FROM services | |
| 14:05:47 | dtantsur | dansmith: thnx! ok, so here are services: https://paste.fedoraproject.org/paste/ZK~YdTqfsWnpIImEF6TxLQ | |
| 14:06:00 | openstackgerrit | Stephen Finucane proposed openstack/nova master: docs: Document the scheduler workflow https://review.openstack.org/475810 | |
| 14:06:43 | sfinucan | edleafe, jaypipes: ^ probably not suitable for merge yet, but there you go | |
| 14:06:58 | jaypipes | sfinucan: hey, cool, thanks for working on that | |
| 14:07:59 | dtantsur | dansmith: cell_mappings has 2 cells | |
| 14:08:23 | dansmith | dtantsur: do they both point to the same database_connection ? | |
| 14:08:59 | dtantsur | dansmith: nope | |
| 14:09:19 | dansmith | well, then I'm not sure how you're getting that exception | |
| 14:09:41 | openstackgerrit | Maciej Kucia proposed openstack/nova master: [doc] Updated sqlalchemy URL in migrate readme https://review.openstack.org/472549 | |