Week of 220425

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:

• remote: Kate (DB, chair), Maarten (ALICE, WLCG), Brian(RAL), Priscilla (ATLAS), Xavier (KIT), Pinja (security), Ben (computing), Borja (monitoring), Christoph (CMS), Darren (NDGF), Andrew (TRIUMF), Dave (FNAL), Federico (LHCb), Douglas (BNL)

Experiments round table:

• ATLAS reports (raw view) -
  • The following list of sites needs a restart of the dCache services after update of IGTF CA Certificates to the latest version 1.115 to reload new Slovak CA certificates. This is due to the fact that these sites have dCache < 7.2.4 that is not able to correctly reload fresh CA certificates without restart. Without this restart the sites might face transfer issues to IEPSAS-Kosice as identified in GGUS:156867. Tickets to each site have been submitted.
    • Full list: AGLT2, CA-SFU-T2, CA-VICTORIA-WESTGRID-T2, CA-WATERLOO-T2, FZK-LCG2, GoeGrid, ifae, IN2P3-CC, MWT2, NIKHEF, pic, RRC-KI-T1, TRIUMF-LCG2, UNI-FREIBURG, CSCS-LCG2, EELA-UTFSM, JINR-LCG2, RU-Protvino-IHEP, UAM-LCG2

• CMS reports (raw view) -
  • A certificate in the CMS Rucio environment expired during the weekend GGUS:156950
    • Some transfer metrics turned red
    • Recovery is in progress

• ALICE
  • NTR

• LHCb
  • FTS Transfer failures from PIC to Echo GGUS:156736 (opened 6/4/22, solved today)

Sites / Services round table:

• ASGC:
• BNL: NTR
• CNAF:
• EGI:
• FNAL: NTR
• IN2P3:
• JINR: NTR
• KISTI:
• KIT: NTR
• NDGF: NTR
• NL-T1:
• NRC-KI:
• OSG:
• PIC:
• RAL: NTR
• TRIUMF: NTR

• CERN computing services:
  • CE ce514.cern.ch affected by switch outage on 19/4/22 downtime OTG
• CERN storage services:
• CERN databases: NTR
• GGUS:
  • A new release is planned for Wed this week
    • Release notes
    • A downtime has been scheduled from 06:00 to 09:00 UTC
    • Test alarms will be submitted as usual
• Monitoring:
  • Distributed final SiteMon availability/reliability reports for March 2022
• Middleware: NTR
• Networks:
• Security: NTR

AOB: