Open Stack

On Fri, Sep 22, 2017 at 02:31:20PM +0000, Jeremy Stanley wrote:
> On 2017-09-22 15:04:43 +0200 (+0200), Attila Fazekas wrote:
> > "if DevStack gets custom images prepped to make its jobs
> > run faster, won't Triple-O, Kolla, et cetera want the same and where
> > do we draw that line?). "
> > 
> > IMHO we can try to have only one big image per distribution,
> > where the packages are the union of the packages requested by all team,
> > minus the packages blacklisted by any team.
> [...]
> 
> Until you realize that some projects want packages from UCA, from
> RDO, from EPEL, from third-party package repositories. Version
> conflicts mean they'll still spend time uninstalling the versions
> they don't want and downloading/installing the ones they do so we
> have to optimize for one particular set and make the rest
> second-class citizens in that scenario.
> 
> Also, preinstalling packages means we _don't_ test that projects
> actually properly declare their system-level dependencies any
> longer. I don't know if anyone's concerned about that currently, but
> it used to be the case that we'd regularly add/break the package
> dependency declarations in DevStack because of running on images
> where the things it expected were preinstalled.
> -- 
> Jeremy Stanley

+1

We spend a lot of effort trying to keep the 6 images we have in nodepool working
today, I can't imagine how much work it would be to start adding more images per
project.

Personally, I'd like to audit things again once we roll out zuulv3, I am sure
there are some tweaks we could make to help speed up things.