Release Engineering/Drafts/Deployments

This page is currently a draft.
More information and discussion about changes to this draft on the talk page.

User:Brennen Bearnes and others from Release Engineering are working on improvements to Wikimedia deployment documentation here. See phab:T273802 for more info.

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This is a hub for the deployment of software to the Wikimedia Foundation production servers. MediaWiki follows a weekly deploy cadence known as the Deployment Train, with separate backport windows Monday–Thursday for bugfixes and configuration changes. For other services, teams decide their own schedule. No deploys are allowed Friday–Sunday, with the exception of emergency situations.

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Current Status

• Deployed versions
• Server Admin Log
• Phabricator:
  • Current train blocker
  • Train Deployments goal

Calendar & Schedules

• Calendar
  • Jump to current window
• Yearly calendar
• 1.36 Roadmap

How-to

• How to become a deployer
• How to deploy the train
• How to pair on the train
• How to deploy backports
• Emergencies 🚨

Background

• Architecture: The structure of heterogeneous deployments

Policy

• Holding the train
• Train vs. backport
• Inclusion criteria: Train, backport, or special window?