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| openstackgerrit | OpenStack Proposal Bot proposed openstack/watcher-dashboard: Updated from global requirements https://review.openstack.org/422975 | 01:57 |
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| openstackgerrit | Merged openstack/watcher-dashboard: Remove support for py26 https://review.openstack.org/422363 | 03:08 |
| openstackgerrit | Merged openstack/watcher-dashboard: Replaces yaml.load() with yaml.safe_load() https://review.openstack.org/421624 | 03:10 |
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| openstackgerrit | zhangyanxian proposed openstack/puppet-watcher: Fix typo in api.pp https://review.openstack.org/423102 | 07:36 |
| openstackgerrit | zhangyanxian proposed openstack/puppet-watcher: Fix typo in api.pp https://review.openstack.org/423102 | 07:36 |
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| alexchadin | dtardivel: good morning! | 08:47 |
| dtardivel | hi alexchadin | 08:47 |
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| pksingh | alexchadin: Hello, | 08:47 |
| alexchadin | dtardivel: about your comment: https://review.openstack.org/#/c/421297/8/watcher/applier/workflow_engine/default.py@97 actually I wanted to avoid 2 for loop statement to make it a little more faster | 08:48 |
| alexchadin | good day, pksingh | 08:48 |
| pksingh | alexchadin: How are you? | 08:49 |
| alexchadin | pksingh: I'm great, and you? | 08:49 |
| pksingh | alexchadin: me too, Thanks:) | 08:49 |
| pksingh | alexchadin: in which timezone you are? | 08:49 |
| alexchadin | UTC+3, Moscow | 08:50 |
| pksingh | alexchadin: great | 08:50 |
| pksingh | alexchadin: i was looking into watcher code, and have few questions | 08:50 |
| pksingh | alexchadin: can i ask? | 08:51 |
| alexchadin | pksingh: feel free to ask, of course:) | 08:51 |
| pksingh | alexchadin: How old data watcher needs from ceilometer? | 08:51 |
| alexchadin | it depends on specified strategy | 08:52 |
| alexchadin | wait a sec | 08:52 |
| dtardivel | alexchadin: Actually, you have 3 nested loops in that code: | 08:52 |
| dtardivel | https://www.irccloud.com/pastebin/UL8VlyFB/ | 08:52 |
| pksingh | alexchadin: sure | 08:52 |
| alexchadin | pksingh: for example, workload_stabilization strategy has period config: https://github.com/openstack/watcher/blob/master/watcher/decision_engine/strategy/strategies/workload_stabilization.py#L142 | 08:53 |
| alexchadin | dtardivel: You are right, O(n) on 9 line | 08:55 |
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| pksingh | alexchadin: so this data polling from ceilometer is done periodically or something else? | 08:56 |
| dtardivel | pksingh: as instance, for the basic consolidation strategy algorithm, we query ceilometer to get the last 2 hours of cpu_util metric for each instance. It's hard coded in the algo. | 08:56 |
| pksingh | dtardivel: thanks, yes i saw it today | 08:56 |
| dtardivel | pksingh: https://github.com/openstack/watcher/blob/master/watcher/decision_engine/strategy/strategies/basic_consolidation.py#L258 | 08:56 |
| pksingh | pksingh: i was wondering, how many days old data is required in ceilometer for watcher to work? | 08:57 |
| pksingh | alexchadin: dtardivel | 08:57 |
| pksingh | ^^ | 08:58 |
| pksingh | i think currently it depends on the stratgey, but is there any max limit from user's perspective? I am a beginner so please excuse me if i ask silly questions | 09:00 |
| dtardivel | pksingh: This clearly depends on your optimisation strategy and the goal you want achieve. This is no predefined rules on this point. And it's not related to Watcher. This is a constraint between your strategy and the metric datasource (ceilometer, monasca) | 09:01 |
| alexchadin | pksingh: watcher doesn't make any limit on it | 09:01 |
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| pksingh | alexchadin: dtardivel : thanks a lot, | 09:04 |
| dtardivel | alexchadin: From my mind, I think we an have a first loop to create a Task for each action listed in the action plan. And a second loop to create the links between tasks. | 09:04 |
| pksingh | alexchadin: is there any lowhangingfruit from where i can start to contribute in Watcher? | 09:05 |
| alexchadin | dtardivel: it was my first version, then I place all logic under one out-loop | 09:05 |
| pksingh | alexchadin: may be it will take couple of weeks for me to understand Watcher code | 09:05 |
| alexchadin | pksingh: the best place to start is to take a look at the current bugs | 09:05 |
| alexchadin | pksingh: I started that way:) | 09:06 |
| pksingh | alexchadin: do devstack setup require to be multinode? | 09:06 |
| alexchadin | pksingh: no | 09:06 |
| pksingh | alexchadin: ok, thanks | 09:06 |
| pksingh | alexchadin: from my understanding, which i got in last one week, it seems watcher is a good project | 09:07 |
| vincentfrancoise | pksingh: hi, for devstack in multinode, just follow the Watcher doc on the matter and it should work just fine | 09:07 |
| alexchadin | pksingh: I'm not familiar with devstack since I have 3-node manual installed openstack | 09:07 |
| pksingh | vincentfrancoise: yes, i am looking into it, I was trying to setup one Vagrantscript which creates all that in one go | 09:08 |
| alexchadin | pksingh: vincentfrancoise and dtardivel have a lot of experience with it:) | 09:08 |
| dtardivel | here a pseudo code https://www.irccloud.com/pastebin/K92r2WtJ/ | 09:08 |
| vincentfrancoise | pksingh: the not so easy part is to connect the shared storage between the nodes | 09:08 |
| alexchadin | dtardivel: +1 | 09:09 |
| pksingh | vincentfrancoise: but till now not succeeded | 09:09 |
| vincentfrancoise | pksingh: but watcher doesn't require much effort as compared to a standard multinode setup | 09:09 |
| pksingh | vincentfrancoise: i will definetly try i | 09:10 |
| alexchadin | vincentfrancoise: hi | 09:11 |
| vincentfrancoise | alexchadin: hi (I'm not at the office so I might not always anser BTW) | 09:12 |
| alexchadin | vincentfrancoise: https://review.openstack.org/#/c/421297/8/watcher/applier/workflow_engine/default.py 74 line. Here I have a flow, that is local variable. How can I get access (in the test) to the object `flow` variable is referenced to? | 09:14 |
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| openstackgerrit | Merged openstack/watcher-dashboard: Updated from global requirements https://review.openstack.org/422975 | 09:50 |
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| openstackgerrit | David TARDIVEL proposed openstack/watcher-dashboard: 'next_uuid' Action field is replaced by 'parents' https://review.openstack.org/411361 | 09:58 |
| vincentfrancoise | alexchadin: mock g.Flow.__init__ to return a mock + wraps? | 10:07 |
| openstackgerrit | Merged openstack/watcher-dashboard: 'next_uuid' Action field is replaced by 'parents' https://review.openstack.org/411361 | 10:11 |
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| openstackgerrit | Alexander Chadin proposed openstack/watcher: New Applier Workflow Engine https://review.openstack.org/421297 | 11:05 |
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