Week of 220124

WLCG Operations Call details

• For remote participation we use Zoom: https://cern.zoom.us/j/99591482961
  • The pass code is provided on the wlcg-operations list.
  • You can contact the wlcg-ops-coord-chairpeople list (at cern.ch) if you do not manage to subscribe.

General Information

• The purpose of the meeting is:
  • to report significant operational issues (i.e. issues which can or did degrade experiment or site operations) which are ongoing or were resolved after the previous meeting;
  • to announce or schedule interventions at Tier-1 sites;
  • to inform about recent or upcoming changes in the experiment activities or systems having a visible impact on sites;
  • to provide important news about the middleware;
  • to communicate any other information considered interesting for WLCG operations.
• The meeting should run from 15:00 Geneva time until 15:20, exceptionally to 15:30.
• The SCOD rota for the next few weeks is at ScodRota
• Whenever a particular topic needs to be discussed at the operations meeting requiring information from sites or experiments, it is highly recommended to announce it by email to the wlcg-scod list (at cern.ch) to allow the SCOD to make sure that the relevant parties have the time to collect the required information, or invite the right people at the meeting.

Best practices for scheduled downtimes

• Best practices for scheduled downtimes

Monday

Attendance:

• local:
• remote: Miro (Chair, DB), Xavier (KIT), Onno (NL-T1), David (IN2P3), Pinja (Security), David (FNAL), Julia (WLCG), Petr (ATLAS), Andrew (TRIUMF), Christoph (CMS), Daniele (CNAF), Borja (Monitoring), Maarten (ALICE), Jens (NDGF), Priyanshu (Compute), Darren (RAL), Steven (Storage), Douglas (BNL), Jose (PIC), Alberto (Monitoring), Concezio (LHCb)

Experiments round table:

• ATLAS reports ( raw view) -
  • ATLAS IAM VOMS now used in production (together with legacy VOMS servers) ADCINFR-214
  • SlovakGrid CA update triggers bug in dCache < 7.2.4
    • same issue we saw in 2021 after Swiss CA update and Brazilian CA update
    • sites with dCache < 7.2.4 must restart all services after upgrading EGI Trustanchors 1.114
  • Network related DB issues on Thursday affected Rucio transfers
  • Rucio now runs exclusively on Kubernetes (tuning Rucio configuration)
  • question from Onno (NL-T1) - What is the status of dCache devs to backport the CA fix to all suported branches. Maarten replied the plan was to have it towards end of 2021. Best to contact developers mailing list or log a support call to check the status.

• CMS reports ( raw view) -
  • Business as usual and there nothing to report.

• ALICE
  • NTR

• LHCb reports ( raw view) -
  • smooth running at ~160k cores
  • dominated by (detailed) simulation production
  • some data movements between sites for operational reasons
    • some hiccups here and there, promptly addressed

Sites / Services round table:

• ASGC: NC
• BNL: question from Douglas When will CMS move to token auth for opportunistic job submission. Christoph replied he will check.
• CNAF: NTR
• EGI: NC
• FNAL: NTR
• IN2P3: NTR
• JINR:NTR
• KISTI: NC
• KIT: NTR
• NDGF: dCache outage next Monday for dCache upgrades.
• NL-T1: NTR
• NRC-KI: NC
• OSG: NC
• PIC:NTR
• RAL: NTR
• TRIUMF: Configured our Frontier Servers to forward ATLAS Frontier traffic to CERN Frontier Servers.

• CERN computing services: NTR
• CERN storage services: NTR
• CERN databases:
  • OTG:0068746 - OS updates for Oracle GoldenGate hosts - ATLAS Oracle DB Replication
• GGUS:
  • A new release is planned for Wed this week
    • Release notes
    • A downtime has been scheduled from 07:30 to 10:30 UTC
    • Test alarms will be submitted as usual
• Monitoring:
  • Distributed final SiteMon availability/reliability reports for December 2021
• Middleware: NTR
• Networks: NTR
• Security: NTR

AOB: