Rucio Meeting

Thursday 5 Mar 2026, 15:00 → 16:00 Europe/Zurich

Martin Barisits (CERN)

15:00 → 15:05 News

• March release schedule
  • Mar-02 39.4.0
  • Mar-09 35.8.4 LTS
  • Mar-09 39.5.0
  • Mar-23 39.6.0 (?)
• Rucio 40
  • Mar-23 FREEZE
  • Mar-26 RC1
  • Apr-02 FINAL
• Next week
  • Discussion of deprecation watchlist

15:05 → 15:25 Community News & DevOps roundtable

• ATLAS
  • Testing of FTS4
    • Second round after the December tests
    • No changes for Rucio
    • Generate URL for job-ids was changed to previous format
• CMS
• Fermilab DUNE/RUBIN/*
  • Update all incommon certificates (Strict deadline)
• DaFab
• ESCAPE
  • Running ESCAPE mini data challenge
    • INFN-Bari was running webdav endpoint that was spawning connection timeouts
      • Might have impacted others
  • Maybe EPFL Student to implement role-based access on scopes
    • Hide certain scopes
    • Contact Giovanni about this!
• CERN IT
  • Also few instances in the data challenge
• Edinburgh DUNE
  • Issue with rucio upload using wrong protocol for existence check - Steve was able to reproduce it
    • Dimitrios: LAN vs WAN issue?
• INFN Datalake
  • Rucio upload to S3 based storage element
    • Limit of 5Gb per file
      • Typical S3 client does multipart put, rucio does not
      • Using gfal, would need to check with GFAL developers
• CTAO
  • Running tests in pre-production environment (ESCAPE data challenge)
    • Double rule setup get STUCK --> Timing would be important, call with Martin to debug
• MADDEN / ETAP
  • Documentation about OIDC auth
• IHEP
  • Upgrade ongoing

15:25 → 15:40 Discussion of Rucio AI Policy draft

AI Policy draft

15:40 → 15:55 Developers roundtable

• Reflection about ongoing Sprint 5 (Sprint Board) [Karan]
  • Less people participating; Please mark issue and participate!
• PR review sprint
  • Decreased! 48 → 39
    • RucioBot doing it's job
    • Please message Karan for suggestions (Or add an issue)
      • waiting-on-author or waiting-on-reviewer labels
      • Chain: Review with change requests --> New commits by author --> Bot should add waiting-on-reviewer
• Rucio 40 priority followup
  • Todo
    • Create a new API endpoint for the clients to request tokens #6638 [Dimitrios]
    • Implement new token authentication for download #7029[Dimitrios]
    • Prevent multiple Reaper threads from working on the same replicas #6512 [Hugo]
      • Martin to check
    • Generate "Configuration parameters" documentation page automatically, to avoid mismatches between documentation and code #325 [Maggie]
    • Change mixed prometheus_client and probe_metric approachs to use PrometheusPusher #129 [Maggie]
  • In Progress
    • Consider using Python venvs in containers to avoid conflicts with system-installed packages #458 [Ben]
    • Token refresh after expiration #73 [Giovanni]
    • Do not use regex to split did, use scope extraction method #7519 [James]
    • Test stability on LTS branches #7964 child of #7667 [Karan]
    • Pin test helper container images for LTS dev environment (release-38-LTS) #8419 child of #7964 [Karan]
    • Copy implimentation of CLI to new CLI structure #8295 child of #7960 [Maggie]
    • Simplify what we run on CI (test suites, OS, Python versions, DB, …) #7965 child of #7667 [Mayank, Karan]
    • [EPIC] UX improvements (Target 17/22) #621 [Mayank]
    • [ EPIC ] : Mutation Operations and Role Based Access to pages/features (Target 5) #622 [Mayank]
  • In Review
    • Add startup self-check mechanism to block Rucio services when critical diagnostics fail #8197 child of #8011 [Dimitris]
    • Ensure PostgreSQL ENUM types created during Alembic migrations honor the configured schema #8145 child of #7737[Dimitris]
    • Wrong documentation for dids/scope/name/files call #8053[Dimitris]
    • Testing: Make tools/run_tests.sh idempotent #7737 child of #7667 [Dimitris]
    • No way to check or change ownership of a scope using Rucio client #7830 [Maggie]
    • Remove hard-coded one-day lifetime in DIRAC API #8172[Max]
    • Possible Belle II specific code in DIRAC functionality #7824[Max]
  • Done
    • Migrate from Jobber to simple Cron #152 [Eric]
    • DIDs not being shown correctly in the extension after a successful download #95 [Giovanni]
    • Make available + Add to Notebook features failing #83[Giovanni]
    • Listing containers with more than 10k entries breaks the kernel #102 [Giovanni]
    • Rucio silently skips importing configured policy package in case of errors #7962 [Max, James]
    • Remove development dependencies from webui container #488[Mayank]
  • Delayed
    • More useful client docstrings and CLI help messages (Target: 15/25) #363 [Dimitris]
    • Stop auto-forwarding of old-style CLI commands #8294[Maggie]
• Other discussion
  
  • Rename of branches
    • master --> main 
    • Consistency but also familiarity (git3 defaults to main too)
    • Start with probes repository, and then go one by one
      • Use variables (already before the change)

15:55 → 16:00 AOB