Monday, 2016-07-11

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openstackgerritMerged openstack/heat: Updated from global requirements  https://review.openstack.org/34003503:25
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openstackgerrithuangtianhua proposed openstack/heat: WIP - Support resource/output condition  https://review.openstack.org/28336603:43
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openstackgerritMerged openstack/heat: Do not populate unused stack and watch rule objects  https://review.openstack.org/33185204:40
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openstackgerritSteve Baker proposed openstack/heat: Use vanilla CentOS image via devstack IMAGE_URLS  https://review.openstack.org/33861204:50
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openstackgerritBin Zhou proposed openstack/heat: Correct reraising of exception  https://review.openstack.org/33805005:21
openstackgerritBin Zhou proposed openstack/heat: Correct reraising of exception  https://review.openstack.org/33805005:23
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openstackgerritMerged openstack/heat: Improve validation for some functions  https://review.openstack.org/33222606:08
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openstackgerritMerged openstack/heat: Remove unused LOG to keep code clean  https://review.openstack.org/33998307:22
openstackgerritMerged openstack/python-heatclient: Updated from global requirements  https://review.openstack.org/34004907:32
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openstackgerritThomas Herve proposed openstack/heat: Use vanilla CentOS image via devstack IMAGE_URLS  https://review.openstack.org/33861207:53
thervestevebaker, Just saw a quick fix FWIW07:53
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openstackgerritBin Zhou proposed openstack/heat: Correct reraising of exception  https://review.openstack.org/33805008:16
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openstackgerrithuangtianhua proposed openstack/heat: WIP - Support resource/output condition  https://review.openstack.org/28336610:00
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openstackgerrithuangtianhua proposed openstack/heat: Fix server networks update  https://review.openstack.org/32578410:01
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openstackgerritDmitriy Uvarenkov proposed openstack/heat: Add new resource Security Group Rule  https://review.openstack.org/33060811:55
openstackgerritThomas Herve proposed openstack/heat: Propage errors in post test hook  https://review.openstack.org/34033112:04
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openstackgerritRabi Mishra proposed openstack/heat: Add dns constraints  https://review.openstack.org/33937213:13
openstackgerritRabi Mishra proposed openstack/heat: Add dns properties and attributes  https://review.openstack.org/33937313:13
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openstackgerritSteven Hardy proposed openstack/heat: Add stack files retrieval API  https://review.openstack.org/32704415:42
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openstackgerritSteven Hardy proposed openstack/heat: Add stack files retrieval API  https://review.openstack.org/32704417:03
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openstackgerritOleksii Chuprykov proposed openstack/heat: Do not show HIDDEN props in res type template  https://review.openstack.org/34050018:05
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openstackgerritJason Dunsmore proposed openstack/heat: Only use client_plugin() if default_client_name is set  https://review.openstack.org/33858119:13
openstackgerritJason Dunsmore proposed openstack/heat: Handle construct_input_data() exceptions  https://review.openstack.org/33925019:23
openstackgerritJason Dunsmore proposed openstack/heat: Handle case where the Nova AZ extension is disabled  https://review.openstack.org/33983719:23
openstackgerritAnne McCormick proposed openstack/heat: Fix doc of OS::Heat::AutoScalingGroup outputs and outputs_list  https://review.openstack.org/33827319:25
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openstackgerritAnne McCormick proposed openstack/heat: Fix doc of OS::Heat::AutoScalingGroup outputs and outputs_list  https://review.openstack.org/33827319:26
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openstackgerritMerged openstack/heat-specs: HAProxy uses milliseconds for its timeout values.  https://review.openstack.org/33968820:46
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stevebakertherve: thanks20:59
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zanebanybody seen any info about the design summit scheduling for Barcelona?21:34
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stevebakerzaneb: welcome back21:43
zanebstevebaker: thanks!21:43
zanebI see nobody has reviewed any of my patches while I was away ;)21:43
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stevebakerI could have sworn I reviewed some21:48
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openstackgerritMerged openstack/heat: HAProxy uses milliseconds for its timeout values.  https://review.openstack.org/33971322:20
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openstackgerritMerged openstack/heat: Do not show HIDDEN props in res type show  https://review.openstack.org/33830022:27
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cwolferhsbaker, just wanted to check that https://review.openstack.org/#/c/340603/ is what you had in mind for https://bugs.launchpad.net/heat/+bug/154620122:34
openstackLaunchpad bug 1546201 in heat "Race condition: boot a server on a network created by Heat" [High,In progress] - Assigned to Crag Wolfe (cwolfe)22:34
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cwolferhoops, i meant stevebaker22:35
stevebakerthats me!22:36
cwolferho/22:37
stevebakercwolferh: yes, although I already have a change for that https://review.openstack.org/#/c/33427022:37
cwolferhdoh! i missed that...22:37
* cwolferh abandons change22:38
stevebakercwolferh: in this different test I've seen another race, subnet is deleted before the floating IP https://review.openstack.org/#/c/335740/22:39
stevebakerI've been thinking we need to completely revisit how we handle implicit neutron dependencies22:40
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cwolferhstevebaker, eh, yeah, that does seem like the kind of issue that could lurk in a few places22:42
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cwolferhat some point, the template author just needs to explicitly call out dependencies, i guess the question is where to draw that line22:45
stevebakersome background - on create if a resource raises ResourceInError then the create will be re-attempted with a backoff cfg.CONF.import_opt('action_retry_limit', 'heat.common.config')22:46
stevebakerwhoops22:46
stevebaker... action_retry_limit times. To handle *all* the neutron delete races we just need to raise ResourceInError on delete failure and implement the retry logic in delete too22:47
stevebakerthen we just need to do something for the create races, lets take network as an example. When only a network uuid is specified we need something which checks that network has a subnet and delays creation of the resource until it does. This could be done one of 2 ways22:49
stevebaker1. raise a ResourceInError and rely on create retry22:50
stevebaker2. have a pre-create task which doesn't finish until the network has a subnet22:50
stevebakerzaneb, cwolferh: what do you think ^22:50
* zaneb reads scrollback22:51
stevebakerthen we delete all that horrible add dependency stuff22:51
cwolferhi agree the retry on delete thing would work, but at a cost of course. i.e., it would be nice to get the dependency order right the first time around and not have spurious (if that's the right word) log messages22:52
cwolferhbut i'm all for making it work right now22:53
stevebakercwolferh: but we can't get the dependency order right ever. (thanks neutron) All we're doing is maybe adding some ordering that helps when all the network resources are in the same stack as the things which use them22:54
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zanebstevebaker: very against heat becoming a 'keep throwing it against the wall until it sticks' engine22:55
stevebakerzaneb: option 2. for create isn't really that22:56
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stevebakerzaneb: another option for delete is that subnet has a task which waits for its ports to disappear before it attempts a delete, because it knows it will fail22:58
zanebstevebaker: maybe phase 2 of convergence can make option 2 a bit easier to implement within a resource (rather than adding a new pre-create step)22:58
cwolferhzaneb, isn't fair though to have a retry for actions baked in even for when we get dependency order right but there is some other (say neutron server) error?23:02
zanebheh, I left a comment on the review that turned out to be the exact same thing you guys said on the bug23:02
zanebcwolferh: yeah, retries are also good, but not as a rug under which to sweep other issues :)23:03
zanebin related news, this is interesting: http://specs.openstack.org/openstack/neutron-specs/specs/newton/routed-networks.html#rest-api-impact23:04
zanebthis could be either very good or very very bad23:04
stevebakeryeah, I've seen that23:06
cwolferhthe more i think about this, the more i think template writers should just use depends_on appropriately. i.e., if you don't know or care whether a server will come up on subnet13 or subnet14, just depend on them both23:11
stevebakercwolferh: they are the only ones who can know the actual dependency - but that is asking a lot from template authors and we'll still get the bug reports23:13
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stevebakerI think adding retry on delete and raising ResourceInError on basically all delete failures will help with delete resilience in general, and delete races specifically23:15
cwolferhseems fair enough to me :-)23:17
stevebakercwolferh: do you want to give it a go? its like this but for delete http://git.openstack.org/cgit/openstack/heat/tree/heat/engine/resource.py#n88123:19
stevebakercwolferh: but easier because there is no CREATE->DELETE->CREATE cycle, just all DELETE23:19
cwolferhstevebaker, cool, i was just wondering why there was delete stuff in that block of code you linked to :-)23:20
stevebakercwolferh: its for resources which are created but go into an ERROR state (specifically nova servers)23:20
cwolferhah, i see23:21
cwolferhstevebaker, sure i can wade into the retry on delete, following the lead from create23:24
stevebakercwolferh: cool23:24
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