BiLD – 06/03/2025

At CERN: Federico, André, Christophe, Christopher, Alexandre, Ryunosuke
On Zoom: Simon, Janusz, Hideki, Henryk, Alexey, Jorge, Vladimir, Xiaomei
Apologies:

Follow-up from previous meetings

Last BiLD was Feb 25th
Last DIRAC certification hackathon on Feb 13th
- The one planned for last week was canceled

DIRAC communities roundtable

LHCb:

Federico+Alexandre+Christophe+Christopher+Vladimir

NTR
fromPreviousMeeting
- Prepared a lhcbdiracx instance (with lhcbdiracx and lhcbdiracx-web), starting to run tests there
  - After going into production, we will release v9+0.1
- Running a stress test (a “ping” from the pilots)

ILC/Calice/FCC

André

Belle2

Hideki

DB issues resolved (run optimize)

GridPP:

Simon, Janusz

Juno

Xiaomei

Topics from GitHub discussions and bots

only un-answered DIRAC and DiracX topics with discussion updates:
- NTR

DIRAC releases

v8.0.70
- added TTLCache for getProxyPrrovidersForDN
- fixes for dirac-apptainer-exec for running within the pilot

DIRAC projects

DIRAC:

Issues by milestone:

v8.0:
*
v9.0:
*
After v9.0:
- adding here those issues that will be treated in the lifetime of v9

Other issues:

Several issues open since long, some might be solved already. Please review those that you opened yourself

PRs discussed:

[9.0] move default MySQL charset to utf8mb4
- made this PR “ready” (was in draft for more that a year without changes…) as Federico started looking into it again
- merging this PR will not imply work on anyone’s side
- It is anyway suggested to update the character set of your DBs
[9.0] use containerized certs creation
- Big PR in terms of code changes, mostly because of fixes for “just wrong” way of testing (e.g. no clear separation between server and client)
- Needs [8.0] integration test fixes (actually mounting volumes)
[8.0] More fixes for dirac_apptainer_exec
- ready for review
[8.0] Add PreferredURLPattern for URL sorting
- input from Belle2, which likes the idea of global setting

WebApp:

from previous meeting One draft PR

Pilot:

Federico added possibility to use dirac-apptainer-exec for running command in the pilot (mostly for dirac-platform). PR is there, but tests with dirac-apptainer-exec are not working, so “almost” empty PR
- Can be merged as-is

DIRACOS:

Release 2.51 : https://github.com/DIRACGrid/DIRACOS2/releases/tag/2.51
- FIX: (#144) Remove setrlimit in XRootD
- CHANGE: (#142) Upper constrain for davix
The above sorts out issues when running at new (very) large RAL nodes, hopefully the next XRoot release will have a proper fix for that

Documentation:

Janusz added pilot logging documentation

OAuth2:

management

Few updates for certificates-creation images

diraccfg

DB12

from previous meeting https://github.com/DIRACGrid/DIRAC/issues/7760#issuecomment-2482420604
- Federico proposed to create “alternate” benchmark

Rucio

[8.0] Implementation of findfilesbymetadata 's method into rucio file catalog client
- merged but https://github.com/DIRACGrid/DIRAC/pull/8046/files#r1979054892
  - consensus is that it is not dangerous

Tests

from previous meeting Federico Started adding Rucio to Dirac integration tests

DiracX:

Road Map : https://github.com/chaen/diracx/blob/roadmap/docs/ROADMAP.MD
dependabot alert
- nothing that it is “solvable” by us
Projects for ISIMA student:
- Pilot (security model)
  - note
  - few of us met and discussed a more detailed plan, note updated to reflect the discussion

Issues
*

PRs discussed:

Large PR from Alexandre: on adding a business logic layer
- A new layer (diracx-logic) for domain-specific stuff.
- Federico the other existing PRs will likely be affected, so merge “fast”
  - will be done today
from previous meeting Federico thinks the reviews should be more prompt, and not only following on the shoulders of Chris&Chris
fromPreviousMeeting OTel proof of concept PR: https://github.com/DIRACGrid/diracx/pull/379
- This is a poc PR that is not yet merge-able. Christophe giving instructions to Jorge on how to proceed

DiracX-charts:

DiracX-web:

Release planning, tests and certification

Certification machines
- MySQL: Federico tried to update all character set to utf8mb4, discovered bug on dbod side
Next hackathon(s)
- in 2 weeks

Next appointments

Meetings:
- hackathon: in 2 weeks
- BiLD: in 3 weeks
WS/hackathons/conferences:
- DiracX hackathon: 5 and 6 May - https://indico.cern.ch/event/1501369/
  - registrations open
- Dirac Users’ Workshop: 17th-20th September 2205 - https://indico.cern.ch/e/duw11
  - registrations open, Xiaomei added few info for VISA

AOB

DIRAC was invited to be an “HSF affiliated project” : https://hepsoftwarefoundation.org/projects/affiliated.html
- Andrei, André, Federico met with Edoardo and Michel Jouvin for few clarifications. Andrei will call a consortium meeting

LHCbDIRAC

LHCbDiracX
- ISIMA for LHCb specific (LHCb extension, also for the Web): note
  - After a bit lengthy discussion we think that the student could create a brand new BookkeepingBrowser Web App in LHCbDiracX-Web. The thing do not (probably shouldn’t at all) mimic the existing Web App, rather it should be an opportunity for re-designing it completely. So, start with requirements and user stories.
- certification setup: updates?
Federico will update MySQL to 8.4.2 for the certification setup. I will follow up for the production databases
- Update plan: https://codimd.web.cern.ch/dnfwITCRRTSvhopGDjlHSA?both
- Federico will merge with existing note(s) to have only one