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#openstack-nova - 2018-05-17
13:12:35 mriedem http://logs.openstack.org/71/568271/2/check/tempest-full-py3/7142c54/controller/logs/etc/nova/nova_conf.txt.gz
13:12:43 mriedem which is in cell0
13:12:44 mriedem [database] connection = mysql+pymysql://root:secretdatabase@127.0.0.1/nova_cell0?charset=utf8
13:13:03 mriedem the cell conductor is using the nova cell1 config
13:13:03 mriedem http://logs.openstack.org/71/568271/2/check/tempest-full-py3/7142c54/controller/logs/screen-n-cond-cell1.txt.gz#_May_17_08_20_10_145541
13:13:19 mriedem http://logs.openstack.org/71/568271/2/check/tempest-full-py3/7142c54/controller/logs/etc/nova/nova_cell1_conf.txt.gz
13:13:23 mriedem [database] connection = mysql+pymysql://root:secretdatabase@127.0.0.1/nova_cell1?charset=utf8
13:14:43 mriedem tssurya: it's a buggy test http://git.openstack.org/cgit/openstack/tempest/tree/tempest/api/compute/admin/test_services.py#n61
13:14:59 mriedem it randomly picks the first service from the list and then looks that up by host and binary
13:15:03 tssurya mriedem: yea!
13:15:05 mriedem it's a single node devstack, so the host is going to be the same
13:15:18 mriedem so tempest needs to just not ever use conductor here
13:15:21 mriedem i'll report a tempest bug
13:15:35 tssurya mriedem: awesome thanks,
13:17:47 mriedem https://bugs.launchpad.net/tempest/+bug/1771817
13:17:48 openstack Launchpad bug 1771817 in tempest "test_get_service_by_service_and_host_name intermittently fails if it tries to use nova-conductor on a single node devstack" [Undecided,New]
13:17:57 mriedem we should just delete that test from tempest, i'll ask the qa team
13:19:03 tssurya mriedem: ack
13:20:47 openstackgerrit Yikun Jiang (Kero) proposed openstack/nova master: Add policy to InstanceGroup object and api models. https://review.openstack.org/563375
13:21:22 openstackgerrit Yikun Jiang (Kero) proposed openstack/nova master: Microversion 2.63 - Use new format policy in server group https://review.openstack.org/567534
13:31:51 Kevin_Zheng mriedem: I was thinking about count services matches the condition before assert
13:31:52 belmoreira mriedem sorry I needed to leave for few minutes
13:32:19 openstackgerrit sahid proposed openstack/nova master: libvirt: Improve 'qemu-img convert' performance https://review.openstack.org/522067
13:33:27 belmoreira mriedem If "colour" is a property that we would like to consider during scheduling how this should be defined?
13:36:29 dansmith belmoreira: a property of what?
13:37:16 mriedem Kevin_Zheng: we do'nt need to do that
13:37:24 mriedem Kevin_Zheng: https://review.openstack.org/569112
13:37:38 mriedem dansmith: of the compute node,
13:37:49 mriedem he wants to put a custom resource class or trait on the compute node resource provider
13:37:58 mriedem belmoreira: traits-based scheduling
13:38:09 dansmith mriedem: ah
13:38:14 mriedem belmoreira: see required traits here https://docs.openstack.org/nova/latest/user/flavors.html#extra-specs
13:38:29 mriedem belmoreira: you put a trait on the compute node resource provider (via osc-placement or REST API or whatever) and then put that required trait in a flavor
13:38:36 mriedem and then that flavor must land on a compute node with that trait
13:39:34 openstackgerrit Matt Riedemann proposed openstack/nova master: Make nova service-list use scatter-gather routine https://review.openstack.org/568271
13:39:35 belmoreira mriedem: I understand that. What I was thinking is if the compute node can it self advertise the trait
13:39:52 mriedem belmoreira: as i said earlier, the compute node can report standard traits that it knows about,
13:40:04 mriedem for custom stuff, you can do that outside of nova-compute needing to report it for you by proxy
13:40:16 Kevin_Zheng mriedem: if that is the case, then most of the tests can be removed?
13:41:03 efried belmoreira: The virt driver can set any traits it wants. But one would have to make a case for a given trait being a sensible thing for the virt driver to set.
13:41:31 mriedem Kevin_Zheng: i'm starting small
13:41:38 openstackgerrit sahid proposed openstack/os-vif stable/pike: ovs-hybrid: should permanently keep MAC entries https://review.openstack.org/505731
13:41:58 belmoreira the use case is when deploying a set of nodes with different custom traits all of this needs to be setup up using tha placement api. It would be easier to include them in a nova config option. This case is much easier to handle with a configuration management tool
13:42:21 Kevin_Zheng mriedem: :)
13:42:28 efried belmoreira: In Dublin we agreed that there would be a certain set of traits that the compute service "owns" - has the authority to set/unset on the providers it owns - and anything outside of that circle could be set externally via direct placement API access (via osc or whatever).
13:43:32 belmoreira efried mriedem thanks for the clarification
13:43:50 efried belmoreira: You're suggesting a config option like
13:43:50 efried compute_provider_additional_traits = CUSTOM_FOO, CUSTOM_BAR
13:43:50 efried ?
13:44:06 mriedem yes, and i don't think we should do that
13:44:07 belmoreira efried yes
13:44:10 dansmith you'd have to have a negative as well so you could ever remove traits you had previously set
13:44:13 mriedem it makes nova a proxy,
13:44:15 dansmith mriedem: agree
13:44:23 mriedem and blocks everyone on nova supporting this thing
13:44:28 mriedem when you can already do it external to nova
13:44:34 efried belmoreira: yes, I agree with mriedem and dansmith.
13:44:47 mriedem i already don't really care for the ironic trait proxy stuff we do
13:45:02 belmoreira my issue is how to manage all this things at scale
13:45:28 efried belmoreira: You would be editing config files, one per host, in any case.
13:45:40 mriedem your config mgmt tool is already doing the logic to put the custom traits in the specific compute host config file yes?
13:45:41 efried belmoreira: Rather than doing that, run a placement CLI once per host.
13:45:47 belmoreira a configuration management tool doing API calls doesn't looks good to me
13:45:56 mriedem why can't that same code just put the traits in placement once nova-compute is running and the rp is registered?
13:46:15 mriedem belmoreira: how do you create keystone endpoints?
13:46:25 mriedem and users/projects
13:46:38 efried Are you equating "API calls" with invoking CLIs?
13:47:07 mriedem openstack-ansible does all of this quite a bit i think
13:47:13 mriedem that's how they do the cells v2 setup
13:47:24 mriedem it's really the only way since we don't have rest apis for cell and host mappings
13:47:55 belmoreira mriedem is true for keystone. We built our own machinery to create/delete projects. And the experience is not great
13:49:36 belmoreira efried: no. The problem is given credentials to a configuration management tool to populate these properties
13:50:19 belmoreira changing configuration files is much easier and less worrying
13:54:20 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Fix error message asserts in functional test https://review.openstack.org/569048
13:54:21 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Resource class set (v1.7) https://review.openstack.org/514644
13:54:22 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Usages per project and user (v1.8, v1.9) https://review.openstack.org/514646
13:54:23 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: CLI allocation candidates (v1.10) https://review.openstack.org/514647
13:54:24 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: New dict format of allocations (v1.11, v1.12) https://review.openstack.org/542819
13:54:25 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Transactionally update allocations (v1.13) https://review.openstack.org/546674
13:54:26 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Add nested resource providers (v1.14) https://review.openstack.org/546675
13:54:27 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Limit allocation candidates (v1.15, v1.16) https://review.openstack.org/548043
13:54:28 openstackgerrit Matt Riedemann proposed openstack/osc-placement master: Allocation candidates parameter: required (v1.17) https://review.openstack.org/548326
13:54:53 mriedem gibi: https://review.openstack.org/#/c/514644/ should be ready to go now
13:55:19 openstackgerrit Yikun Jiang (Kero) proposed openstack/nova master: Add policy to InstanceGroup object and api models. https://review.openstack.org/563375
13:55:20 openstackgerrit Yikun Jiang (Kero) proposed openstack/nova master: Add policy field to ServerGroup notification object https://review.openstack.org/563401
13:57:08 gibi mriedem: done
13:57:18 mriedem yay
13:57:58 melwitt nova meeting in 3 min
14:09:17 openstackgerrit Sylvain Bauza proposed openstack/nova-specs master: Proposes Multiple GPU types https://review.openstack.org/557065
14:17:13 mriedem tssurya: check the max_attempts config option, if it's 1 then we shouldn't be calculating alternate hosts in the scheduler
14:17:23 mriedem and belmorei_ said in boston that cern doesn't do retries
14:17:41 dansmith mriedem: well, let me just hand you my thunder then
14:18:28 mriedem tssurya: dansmith reminded me that max_attempts=1 means no retries and dansmith reminded me that belmorei_ said in boston that cern doesn't do retries
14:18:40 dansmith haha
14:20:44 belmorei_ mriedem: correct :) we have max_attempts=1
14:21:31 dansmith so if it's trying to get alternates in that case, it's probably a bug
14:22:28 mriedem yeah need to figure that part out, although i thought edleafe added unit tests for that scenario to assert that we didn't try calculating alternates if max_attempest=1
14:22:36 mriedem tempest on the brain
14:23:01 dansmith ah,
14:23:08 dansmith max_attempts grabs one alternate it looks like

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