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| openstackgerrit | Ryan Brady proposed openstack/mistral-lib master: Adds minimum common shared code for custom actions API https://review.openstack.org/411412 | 04:53 |
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| d0ugal | joanna: Are you looking to use Mistral from another OpenStack project? | 06:47 |
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| openstackgerrit | Dougal Matthews proposed openstack/mistral-specs master: Add AUTHORS to the .gitignore https://review.openstack.org/443467 | 08:13 |
| openstackgerrit | Dougal Matthews proposed openstack/mistral-specs master: Force the docs to be built with Python 2 https://review.openstack.org/443468 | 08:14 |
| openstackgerrit | Dougal Matthews proposed openstack/mistral-specs master: Add the Pike section headers and links https://review.openstack.org/443477 | 08:20 |
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| openstackgerrit | Juan Antonio Osorio Robles proposed openstack/python-mistralclient master: Use generic keystone client instead of versioned https://review.openstack.org/443118 | 08:42 |
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| openstackgerrit | Juan Antonio Osorio Robles proposed openstack/mistral master: Use generic keystone client instead of versioned https://review.openstack.org/443117 | 08:56 |
| jaosorior | d0ugal: found the issue! could you check it out https://review.openstack.org/#/c/443118/ ? | 09:34 |
| jaosorior | rakhmerov: if you have a chance https://review.openstack.org/#/c/443118/ | 09:36 |
| d0ugal | jaosorior: yup, looking in a min | 09:42 |
| breton | can i schedule instance shutdown with second-precision? | 10:18 |
| breton | i know that mistal has cron triggers, but are there "at" triggers? | 10:27 |
| openstackgerrit | Merged openstack/mistral-dashboard master: Add test for mistral-dashboard action_executions https://review.openstack.org/438280 | 10:36 |
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| breton | now i am thinking of doing something stupid with wait-before | 10:55 |
| breton | but it seems to be not HA | 10:55 |
| d0ugal | breton: so you want to schedule a one off workflow? | 10:57 |
| d0ugal | breton: You can use a combination of --pattern --first-time and --count to run something once at a specific time/date | 11:01 |
| d0ugal | mistral cron-trigger-create --pattern "* * * * *" --first-time "2017-03-10 00:00" --count 1 | 11:02 |
| d0ugal | ^ that should run it once only at the start of tomorrow | 11:02 |
| d0ugal | (note: I have never actually used this feature) | 11:02 |
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| breton | d0ugal: nice. Can i do it at a specific second? | 11:43 |
| d0ugal | breton: good question, I'm not sure. | 11:44 |
| d0ugal | breton: it is stored as a standard datetime, so that suggests that you can | 11:45 |
| d0ugal | but I am not sure where the code is that parses it from a string, I guess that is the place to check | 11:45 |
| d0ugal | or you could just try :) | 11:45 |
| d0ugal | breton: it seems not. https://github.com/openstack/mistral/blob/e6a1ac2b5371d1887122571b209d4154218b9c05/mistral/services/triggers.py#L70-L73 | 11:46 |
| breton | what i want to do high-level is billing that would disable instances at specific time, based on $ left on account. Since the price per second is known, i can calculate the time. And i need something to trigger at that time. | 11:50 |
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| openstackgerrit | Merged openstack/mistral master: Updated from global requirements https://review.openstack.org/443355 | 13:13 |
| d0ugal | breton: makes sense - I'm not sure Mistral can guarantee second precision | 13:15 |
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| ddeja | d0ugal: It can't | 14:08 |
| d0ugal | :) | 14:08 |
| ddeja | due to how the trigger scheduler is build | 14:08 |
| d0ugal | breton: ^ so maybe Mistral isn't a good choice if you need billing precision | 14:09 |
| ddeja | if we have a wf that we want to start at, for example 5:30:00, mistral only guarantes that it would start no sooner than 5:30:00 | 14:09 |
| d0ugal | right | 14:10 |
| ddeja | but it may start a few second later, especially if there would be a lot of triggers specified for given time | 14:10 |
| d0ugal | or lots of other workflows already running I guess | 14:10 |
| ddeja | yes | 14:10 |
| ddeja | hm, that's interesting case to be honest | 14:11 |
| ddeja | I will be able to prepare a scenario where trigger is not start at all for a day, as an example | 14:12 |
| d0ugal | heh | 14:12 |
| d0ugal | because there is a large queue already? | 14:12 |
| ddeja | of course, it would be a prepared scenario, I don't belive such case would ever be observed naturally | 14:12 |
| ddeja | d0ugal: basically, yes, schedule a ton of workflow with std.sleep action in it | 14:13 |
| d0ugal | lol | 14:13 |
| d0ugal | basically DOS mistral :) | 14:13 |
| ddeja | yeah | 14:13 |
| ddeja | well no, that will probably not work | 14:15 |
| breton | well, i think this scenario can be prepared for any non- real-time system ;) | 14:15 |
| ddeja | but running milion of times mitral run-action std.sleep seconds=55 should break it ;) | 14:15 |
| ddeja | breton: I guess so | 14:15 |
| ddeja | well, no, the second scenario will also not work due to 1 minute timeouts | 14:16 |
| ddeja | ok, no, I think it's not that easy to postpone a trigger execution for longer than 1 minute | 14:16 |
| ddeja | despite having a lot of triggeres scheduled for same hour | 14:17 |
| ddeja | we are iterating over them one-by-one, so it can take time | 14:17 |
| ddeja | it's only a few miliseconds per trigger, but still | 14:18 |
| * ddeja should not be thinking this much about breaking mistral | 14:18 | |
| d0ugal | ddeja: 1 minute timeout? | 14:18 |
| breton | well, in my environment i can kindly ask folks not to do what you are describing :) | 14:19 |
| ddeja | d0ugal: that | 14:19 |
| ddeja | d0ugal: that's the default timeout for rpc calls | 14:19 |
| d0ugal | ddeja: aha, but an action can run for more than 1 minute | 14:19 |
| ddeja | d0ugal: yes, sure | 14:20 |
| ddeja | but engine will be accepting next calls | 14:20 |
| d0ugal | breton: life is easier when you can trust your users :) | 14:20 |
| d0ugal | ddeja: right | 14:20 |
| ddeja | so it can send requests to another executor | 14:20 |
| ddeja | it is safe to have executor in threading mode | 14:20 |
| ddeja | since it is not touching the db | 14:20 |
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| amoralej | hi mistral, i've reported in https://bugs.launchpad.net/mistral/+bug/1671505 an issue we are facing while running mistral tempest jobs in rdo-ci | 14:52 |
| openstack | Launchpad bug 1671505 in Mistral "Tempest errors running mistral-api as wsgi in apache" [Undecided,New] | 14:52 |
| amoralej | let me know if you need any help to access logs or i can help in any way | 14:52 |
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