Week of 231113

WLCG Operations Call details

• The connection details for remote participation are provided on this agenda page.

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: Julia (WLCG), Maarten (ALICE + WLCG)
• remote: Andrew (TRIUMF), Christoph (CMS), Daniele (CNAF), Darren (RAL), David B (IN2P3-CC), David M (FNAL), Doug (BNL), Henryk (LHCb + NCBJ), John (ATLAS), Onno (NLT1), Xavier (KIT)

Experiments round table:

• ATLAS reports (raw view) -
  • NTR

• CMS reports (raw view) -
  • NTR

• ALICE
  • Low to normal activity on average
  • GGUS:164044 opened about the CVMFS Stratum-1 at RAL on Monday evening Nov 6
    • It had started falling behind and was blocked from remote access Tue morning
    • The service was working OK again on Wed afternoon

• LHCb reports (raw view) -
  • Problems with data staging at CERN
    • Tape drives were used for maintenance purposes after the HI data taking was finished
    • Everything okay now
  • Slow speed of data staging at RRCKI
  • Many validations and productions running now

Sites / Services round table:

• ASGC:
• BNL: NTR
• CNAF: NTR
• EGI:
• FNAL: NTR
  • Julia:
    • when do you intend to upgrade dCache to 9.2?
    • we need to test and validate the monitoring improvements
      needed in DC24 well before DC24 will start
  • David:
    • will check and let you know
• IN2P3: Quarterly maintenance scheduled on Tuesday Dec. 12th. A least tape storage will be in downtime. Details will be provided the week before.
• JINR: NTR
• KISTI:
• KIT:
  • Site downtime announced in GOCDB #34716 for Dec 6th/7th
• NDGF:
• NL-T1: NTR
• NRC-KI:
• OSG:
• PIC:
• RAL: NTR
• TRIUMF: Scheduled outage for dcache update to 8.2.35 on Tuesday Nov 14 @ 17:30UTC (https://goc.egi.eu/portal/index.php?Page_Type=Downtime&id=34726)

• CERN computing services: NTR
• CERN storage services:
• CERN databases:
• GGUS: NTR
• Monitoring: Distributed final SiteMon availability/reliability reports for 2023/10.
• Middleware:
  • The HTCondor CE campaign on EGI ran into an HTCondor code limitation
    that is being discussed with the HTCondor devs
    • An updated recipe should be made available in the next days
• Networks:
• Security:

AOB: