Week of 220509

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 (chair, DB), Julia (WLCG), Maartent (WLCG, ALICE), Xavier (KIT), Pinja (security), Dave (FNAL), Jiri (ATLAS), Federico (LHCb), Christoph (CMS), Laurence (computing), Andrew (TRIUMF), Doug (BNL), Borja (monitoring), Darren (RAL), Vincenzo (CNAF), Onno (NL-T1)

Experiments round table:

• ATLAS reports (raw view) -
  • NTR

• CMS reports (raw view) -
  • NTR

• ALICE
  • myproxy.cern.ch was broken since Apr 25, fixed on May 3 (GGUS:157130)

• LHCb
  • NTR

Sites / Services round table:

• ASGC:
• BNL: 4 hour dCache downtime Tuesday 17-May 13:00 UTC (9:00 EDT) - 17:00 UTC (13:00 EDT) upgrade to dCache 7.2.15
• CNAF: NTR
• EGI:
• FNAL: NTR
• IN2P3: NTR
• JINR:
• KISTI:
• KIT: Firewall issues this morning from 11:30 to 12:30 o'clock CEST (GOC-DB downtime).
• NDGF: NTR
• NL-T1: NTR
• NRC-KI:
• OSG:
• PIC:
• RAL: NTR
• TRIUMF: On Wednesday May 11, will update our ARC CE's to 6.15.1 GOCDB:https://goc.egi.eu/portal/index.php?Page_Type=Downtime&id=32344

• CERN computing services: NTR
• CERN storage services:
• CERN databases: NTR
• GGUS: NTR
• Monitoring: NTR
• Middleware:
  • MyProxy saga:
    • myproxy.cern.ch (partly) broken from Apr 25 evening to May 3 morning (GGUS:157130)
    • caused by an update to myproxy 6.2.9-7 that is not backward-compatible
      • for example with version 6.2.9-1 in the EGI UMD-4 repository
    • the service was rolled back to that older version on May 3
    • Grid Community Forum experts released backward-compatible 6.2.9-8 later that day
    • the service was upgraded to that version on May 5
    • version 6.2.9-10 should soon reach EPEL for EL7, 8 and 9
      • it brings OpenSSL v3 support that is required on EL9
      • EL9 clients and servers cannot use earlier versions
      • earlier versions still work on EL7 and 8
• Networks: NTR
• Security: Advisory sent about a critical vulnerability

AOB: