[Engineering] [Ops] Changes to SWAT deployment policies, effective Monday April 30th

Fri Apr 27 15:51:23 UTC 2018

Will multi-file, single-directory syncs still be allowed? In other words,
can I deploy a change to the Foo extension that touches many files with
scap sync-dir extension/Foo ?

On Thu, Apr 26, 2018, 15:15 Greg Grossmeier <greg at wikimedia.org> wrote:

> Hello,
>
> I have made two changes to SWAT policies today.
>
> First, we now disallow multi-sync patch deployments. See T187761[0].
> This means that the sync order of files is determined by git commit
> parent relationships (or Gerrit's "depends-on"). This is to prevent SWAT
> deployers from accidentally syncing two patches in the wrong order.
>
> Second, we are reducing the number of allowed patches from 8 to 4. This
> is to reduce stress on the SWAT deployer as well as set expectations for
> requesters on the pace of the windows. See the approximate best case
> time spent breakdown[1] for how we came to this number.
>
> I've updated the on-wiki documentation on wikitech[2][3].
>
>
> Thank you for flying scap,
>
> Greg
>
>
> [0] https://phabricator.wikimedia.org/T187761
> [1]
> * +2/Wait for Jenkins to merge - 2 min
> * prepare git on tin - 1 min
> * Deploy to mwdebug - 1 min
> * Verify on mwdebug - 3 min
> * Deploy to production - 1 min
> * Verify & wait/watch logs - 2 min
> [2]
> https://wikitech.wikimedia.org/w/index.php?title=SWAT_deploys&diff=prev&oldid=1789212
> [3]
> https://wikitech.wikimedia.org/w/index.php?title=SWAT_deploys&diff=next&oldid=1789212
>
> --
> | Greg Grossmeier            GPG: B2FA 27B1 F7EB D327 6B8E |
> | Release Team Manager            A18D 1138 8E47 FAC8 1C7D |
>
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>
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