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| gregwork | what does it mean when stack create shoots back: ERROR: Property error: : resources.aggregate-hci-0.properties.hosts[0]: : 'Client' object has no attribute 'hosts' | 02:40 |
|---|---|---|
| gregwork | OS::Nova::HostAggregates most definitely has the attribute hosts which the spec says is a list | 02:41 |
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| gregwork | eg. | 02:42 |
| gregwork | https://pastebin.com/b6gmKZvu | 02:42 |
| gregwork | this is more or less out of the github.com hot templates examples repo | 02:43 |
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| gregwork | if i omit the hosts attribute the stack crate succeeds but it is created but when i do an openstack aggregate show 1rsp-lab-az-0 | 02:52 |
| gregwork | i see the hosts: field is empty | 02:52 |
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| gregwork | i think this is busted | 03:05 |
| gregwork | https://pastebin.com/1616Ymg2 | 03:05 |
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| ramishra | gregwork: yes, the host constraint check seems boken after https://github.com/openstack/python-novaclient/commit/1d88717e751e743ca7edd978346b95b6e7b3f235#diff-4ef50ccc65413eb1dda481e0484e831b. Feel free to a raise a bug and/or submit a patch | 04:21 |
| gregwork | i did open a ticket with redhat about this earlier, was curious if it was something i was doing or an actual bug | 04:22 |
| gregwork | ramishra: could i ask you a question about instance placement | 04:22 |
| ramishra | gregwork: it would be aquestion for #nova channel :) | 04:23 |
| gregwork | well its using heat | 04:23 |
| ramishra | yeah, but heat does not do any placement related logic, just passes the hints to nova | 04:24 |
| gregwork | ramishra: given a stack deploying 3 sets of instances, 3 of type-a, 3 of type-b, and 6 of type-c .. given 3 compute nodes, how could i gaurantee that each type-a server got placed on each of the 3 compute nodes (for ha purposes) | 04:24 |
| gregwork | well im trying to figure out what options i have with heat | 04:24 |
| gregwork | im deploying openshift on my openstack lab, and i want to gaurantee that the 3 master instances dont find each other on the same compute node | 04:25 |
| gregwork | i was thinking about using scheduler_hints: different_server: [ ... ] | 04:26 |
| gregwork | but im not sure how to populate the contents of that list dynamically | 04:26 |
| gregwork | im using a resource group to iterate the deployment of these nodes | 04:27 |
| gregwork | so the first master node that gets deployed .. different_server would be empty as no other masters exist | 04:27 |
| ramishra | I think you can use anti-afinity rules with server groups https://github.com/openstack/heat/blob/master/heat/engine/resources/openstack/nova/server_group.py#L55 | 04:27 |
| ramishra | so the nodes in a server group won't be placed together | 04:28 |
| gregwork | soft vs. hard anti-affinity ? | 04:28 |
| ramishra | your choice, if no nodes are available for placement then soft will tolerate, else scheduling would fail.. | 04:29 |
| gregwork | ah | 04:29 |
| gregwork | another question, is there a method to look up the value of a previously created resource in a stack as it is deploying | 04:30 |
| ramishra | lookup by what? name/id? | 04:30 |
| gregwork | instance id | 04:30 |
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| gregwork | for my earlier example anti-affinity will work nicely, for the master nodes, but with the type-c i cant use anti affinity and i need to decide on what is a balanced deployment | 04:31 |
| gregwork | so ideally 2 of type-c instances per compute node | 04:32 |
| ramishra | you can just do a resource list -n <depth> and then grep the instance_id, there is no better way to check in a nested stack where the server is deep somewhere | 04:32 |
| gregwork | so id probably fiddle with different_servers | 04:32 |
| gregwork | in scheduler hints, but i need to look up instance id's to fill that with | 04:32 |
| ramishra | oh, you mean have some lookup in a template to provide hints, templates are static..so not possible | 04:34 |
| gregwork | well i am using a resource group that calls another build.yaml | 04:35 |
| gregwork | im thinking the build.yaml would be able to look up resources in the parent | 04:35 |
| gregwork | for example | 04:36 |
| gregwork | https://pastebin.com/r5wszG8s | 04:36 |
| gregwork | so when ocp-node.yaml gets called as this rg iterates, is there no way for it to look up and query what other resources were created | 04:37 |
| gregwork | to populate hints | 04:38 |
| ramishra | gregwork: no not in the template itself..but you can possibly have logic in your build script to update the template with the instances created as part of last stack deployment | 04:40 |
| gregwork | you are suggesting i cant do this in heat alone and should use something outside of heat? | 04:42 |
| ramishra | gregwork: yes | 04:42 |
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| gregwork | do projects like tripleo use mistral to create the workflow of template deployment during the overcloud provisioning since heat itself cant do implicit ordering of resources at deployment ? | 05:16 |
| gregwork | i mean there isnt way in 1 template to say create resource A first, then create B, then create C ? | 05:17 |
| ramishra | gregwork: you can use 'depends_on' for that kind of dependencyy in a template https://docs.openstack.org/heat/latest/template_guide/hot_spec.html#resources-section | 05:23 |
| ramishra | https://docs.openstack.org/heat/latest/template_guide/hot_spec.html#hot-spec-resources-dependencies has more details | 05:25 |
| gregwork | interesting | 05:25 |
| ramishra | it's always a good idea to go through the template guide in detail before composing templates, we spend good amount of time documenting stuff:) | 05:28 |
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| joxyuki | hello folks, would you kindly review below patches? https://review.opendev.org/#/c/669789/ https://review.opendev.org/#/c/673403/ | 07:40 |
| joxyuki | Now I am working on https://storyboard.openstack.org/#!/story/2006372. These patches needs to be merged in advance. | 07:40 |
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