Week of 211108

WLCG Operations Call details

• At CERN the meeting room is 513-R-068.

• 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 wlcg-scod@cernSPAMNOTNOSPAMPLEASE.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:

• remote: Alberto (Monit), Borja (Chair, Monit), Chien-De (ASGC), Christoph (CMS), Darren (NDGF), David (FNAL), Doug (BNL), Francesco (CNAF), Henryk (LHCb), Jose Enrique (ATLAS), Julia (WLCG), Maarten (ALICE), Onno (NL-T1), Priyanshu (Computing), Steven (Storage), Xavier (KIT)

Experiments round table:

• ATLAS reports (raw view) -
  • NTR

• CMS reports (raw view) -
  • Opened a bunch of tickets for sites that join the CMS AAA xrootd federation with older version of site redirector
    • Most tickets are closed already - open just to query for the upgrade plans

• ALICE
  • NTR

• LHCb reports (raw view) -
  • NTR

Sites / Services round table:

• ASGC: NTR
• BNL: DCache Downtime 9-Nov-21 09:00 EST - 13:00 EST (14:00 - 18:00 UTC) - security upgrade
• CNAF: NTR
• EGI: NC
• FNAL: NTR
• IN2P3: NTR
• JINR: NTR
• KISTI: NC
• KIT: Postpone downtime announced for tomorrow for two weeks.
• NDGF: NTR
• NL-T1: We upgraded the Sara-matrix dCache from 6.0 to 6.2 on Nov 4. There seems to be a small performance impact which is being investigated by the dCache developers. Let us know if you observe any issues.
• NRC-KI: NC
• OSG: NC
• PIC: Apologies, I am attending the pre-GDB. There is NTR from PIC, except tomorrow's downtime that has been announced to experiments and through GOCDB, to update dCache and HTCondor.
• RAL: NTR
• TRIUMF: NTR

• CERN computing services: NTR
• CERN storage services: NTR
• CERN databases: NC
• GGUS: NTR
• Monitoring: NTR
• Middleware: NTR
• Networks: NTR
• Security: Advisory about a high risk vulnerability sent on Wednesday.
  • Doug: Is this the one about dCache (sent on Monday)?
  • Maarten: This is another one, OSG security team has been informed
  • David: I can confirm OSG delivered the announcement for the one of Monday

AOB: