Migrate all precise jobs on the job grid to trusty in several steps.
== Announcements ==
* https://lists.wikimedia.org/pipermail/labs-announce/2016-August/000144.html
* https://lists.wikimedia.org/pipermail/labs-announce/2016-October/000159.html
* https://lists.wikimedia.org/pipermail/labs-announce/2016-October/000171.html
== Details ==
* https://wikitech.wikimedia.org/wiki/Tools_Precise_deprecation
== Timeline ==
* [x] late August 2016: Jobs started without `-l release=...` and webservices started with `--release=precise` will print a warning.
* [x] mid October 2016: Jobs started with `jsub` will no longer run on Precise hosts by default, and will instead run on Trusty hosts. This means jobs running via cron will migrate to trusty automatically.
* [x] October 2016-January 2017: Tools starting jobs with `jsub -l release=precise` will start receiving emails urging them to migrate to Trusty.
* [] March 2017: Jobs started with `jsub -l release=precise` will no longer function and will crash with an error.
== Progress ==
* [[https://graphite-labs.wikimedia.org/render/?width=600&height=300&yMin=0&target=cactiStyle(alias(sumSeries(tools.tools-services-01.sge.hosts.tools*12*.job_count),%27precise%27))&target=cactiStyle(alias(sumSeries(tools.tools-services-01.sge.hosts.tools*14*.job_count),%27trusty%27))&from=-180d|Graphite graph of Precise vs Trusty jobs]]
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