Week of 220815

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: Andrew (TRIUMF), Christoph (CMS), Dave (FNAL), Doug (BNL), Maarten (ALICE + WLCG), Mark (LHCb + Birmingham), Nils (computing), Onno (NLT1), Steven (storage), Xavier (KIT)

Experiments round table:

• ATLAS reports (raw view) -
  • Doug: heard of a synchronization issue between VOMS-Admin and IAM
  • Maarten:
    • a sync cron job should run every 3 hours, with known issues
    • corrections need to be applied manually from time to time
    • the IAM devs will look into fixing the most annoying cases
    • when a new user is not (yet) found in the IAM VOMS endpoint,
      VOMS clients will try the legacy services next
    • in any case, please open a ticket when needed
  • Doug: will check...

• CMS reports (raw view) -
  • Nothing to report

• ALICE
  • NTR

• LHCb reports (raw view) -
  • Issues:
    • Any updates on the connection timeout issues at SARA (GGUS:153653) ?
      • Current status is that it is reproducible on both IPv6 and IPv4 on a test VM
      • Onno: will try to reproduce the problem locally

Sites / Services round table:

• ASGC:
• BNL: NTR
• CNAF:
• EGI:
• FNAL: NTR
• IN2P3:
• JINR: NTR
• KISTI:
• KIT: We finally present to you the SIR on our storage incident back in March this year (WLCGServiceIncidents).
  • Maarten: impressive, thanks!
• NDGF: NTR
• NL-T1: NTR
• NRC-KI:
• OSG:
• PIC:
• RAL: NTR
• TRIUMF: NTR

• CERN computing services:
  • VOMS admin service patched this morning after testing in QA Thu/Friday.
    • Maarten: a security patch for which an advisory will be sent today (done)
• CERN storage services:
• CERN databases:
• GGUS:
  • E-mails sent to people in CC, involved or subscribed
    have a link to the ticket included again.
• Monitoring:
  • WLCG SiteMon final reports for July 2022 sent around
• Middleware: NTR
• Networks:
• Security:

AOB: