[OpenStack-Infra] Spot instances for CI

Jeremy Stanley fungi at yuggoth.org
Thu Dec 17 19:14:36 UTC 2015


On 2015-12-17 09:24:33 +0000 (+0000), Jean-Daniel Bonnetot wrote:
> You probably know that the foundation need more ressources for the
> CI. What do you think about pushing spot instances? It could be a
> great solution for our CI and make a smaller step for providers to
> give ressources « when they can ».
> 
> https://review.openstack.org/#/c/104883/

The idea, from a high level at least, looks reasonable (though I'm
not heavily involved with Nova development so don't really know how
well it fits with their plans). Since our CI is somewhat tolerant of
nodepool-managed instances dying on their own (because some jobs can
actually crash the operating system on them, and because cloud
instances and networks can be unreliable at times), the impact of
some fraction of job workers getting deleted out from under us
simply delays test results reporting while those jobs are rerun. If
it were constant and a significant enough percentage of our
aggregate quota impacted in this way then it would likely be pretty
crippling for us, but as we diversify across an increasing number of
donors the risk there diminishes as well I expect.
-- 
Jeremy Stanley



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