Wikimedia Release Engineering Team/Quarterly review, April 2014

Date: April 30th | Time: 18:00 UTC | Slides: ... | Notes:: etherpad on wiki

Who:
 * Leads: Greg G, Chris M
 * Virtual team: Greg G, Chris M, Antoine, Sam, Bryan, Chris S, Chad, Zeljko, Andre, Rummana
 * Other review participants (invited): Robla, Sumana, Quim, Maryana, James F, Terry, Tomasz, Alolita, Erik

Topics: Deploy process/pipeline, release process, bug fixing, code review, code management, security deploy/release, automation prioritization

Big picture
Release Engineering and QA are where our efforts in Platform can be amplified. When we do things well, we start to see more responsive development with higher quality code. That is our focus. What we want to accomplish: ...All in an effort to pave the path to a more reliable continuous deployment environment.
 * More appreciation of, response to, and creation of tests in development
 * Better monitoring and reporting out of our development and deployment processes, especially test environments and pre-deployment
 * Reduce time between code being merged and being deployed
 * Provide information about software quality in a way that informs release decisions
 * Help WMF Engineering learn and adapt from experience

Team roles
Many people outside of the virtual team play an important role in releases, but this review will focus on the work of the following people in the following roles:
 * Release engineering: Greg G, Sam, Chris S (security), Bryan Davis
 * QA and Test Automation: Chris M, Zeljko, Rummana
 * Bug escalation: Andre, Greg G., Chris M, Chris S (security)
 * Beta cluster development/maintenance:' Antoine, Sam, Bryan Davis
 * Development tools (e.g. Gerrit, Jenkins): Antoine, Zeljko

Goals
vis a vis the WMF Engineering 2013-14 goals.

Deployment Tooling

 * Process through all (useful) pain points from the Dev/Deploy review session (Greg)
 * explicitly: Begin discussions (on list and/or wiki), complete discussions, distill requirements and next steps, prioritize
 * Scap incremental improvements
 * step 1:
 * Refactor existing scap scripts to enhance maintainability and reveal hidden complexity of current solution (Bryan)
 * step 2:
 * create matrix of tool requirements per software stack (MW, Parsoid, ElasticSearch) (Greg)
 * Use above matrix to add/fix functionality in scap (or related) tooling for ONE software stack, prioritized by cross stack use (Bryan)

Hiring

 * Complete hiring and train new Test Infrastructure Engineer (Chris, all)
 * Complete hiring and train new QA Automation Engineer (Chris, all)

Browser tests
Goal: use the API to create test data for given tests at run time. (Jeff, Chris, Željko)


 * target dev environments with bare wikis/one off instances//vagrant/"hermetic" test environments
 * in support of teams who requested this, for example Mobile and public Mediawiki release (Chris)
 * in support of browser tests on WMF Jenkins '''(Jeff, Željko)
 * requires thoughtful use of the API
 * first pass: create articles with particular title and content. Create users with particular names and passwords.

Goal: create the ability to test headless (Željko, Jeff, Chris)


 * targets build systems (Antoine, all)

Goal: run versions of tests compatible with target test environments (Chris, all)


 * today we always run the master branch of browser tests. This is inconvenient, as target environments such as test2wiki lag beta labs by at least one week.
 * create the ability in Jenkins builds to run the versions of tests appropriate to the versions of extensions in the target wiki.
 * discussion is only begun, but this would be worthwhile.

Ongoing:


 * Continue to move shared code to shared repo; e.g. Login
 * Continue to maintain tests and keep them green, e.g. connection issues

Beta labs
Goal: continue to have beta labs emulate production more closely (Antoine, all)
 * Make database in beta emulate production (set up db slaves) (Antoine)
 * This could have demonstrated a Flow problem before it was deployed
 * Use beta labs as a testing ground for the above Deployment Tooling work (Greg, Bryan, all)

Dependencies
Ops dependency:
 * Deployment Tooling (see above)

MW Core dependency:
 * Deployment Tooling (see above)
 * Vagrant

Last quarter actions

 * - Greg Bryan to send periodic updates about scap refactoring
 * Greg convene conversation with labs folks post migration re labs-vagrant (including OpenStack API etc)
 * : Have a plan for Vagrant
 * determine fit within test infra explicitly
 * : add MW release tarball as goal in next quarterly review
 * : figure out if a central developer to generate metrics on unit tests, maintaining the framework, etc

Next Quarter
TO FILL IN

Questions

 * to fill in...