Week of 200713

WLCG Operations Call details

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

• For remote participation we use the Vidyo system. Instructions can be found here.

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:

• local:
• remote: Andrei (Databases), Andrew (TRIUMF), Borja (Chair, Monitoring), Christian (NDGF), Christoph (CMS), Darren (RAL), Dave (FNAL), David (IN2P3), Julia (WLCG), Luis (Batch), Maarten (ALICE), Mark (LHCb), Pavlo (ATLAS), Pepe (PIC), Vincent (Security), Xavier (KIT), XIN (BNL)

Experiments round table:

• ATLAS reports ( raw view) -
  • HammerCloud massive blacklisting because of communication failure between the components
  • Storages issues at UKI-NORTHGRID-MAN-HEP GGUS:147731 and UKI-NORTHGRID-LANC-HEP GGUS:147770

• CMS reports ( raw view) -
  • Business as usual - no major item to report

• ALICE -
  • NTR

• LHCb reports ( raw view) -
  • Activity:
    • Usual MC, user and WG production.
    • Preparing Bookkeeping Downtime for Oracle DB upgrade on Wednesday

Sites / Services round table:

• ASGC: NC
• BNL: NTR
• CNAF: NTR
• EGI: NC
• FNAL: NTR
• IN2P3: NTR
• JINR: NTR
• KISTI: NTR
• KIT: Split-brain issue with the KIT firewall from Thursday into Friday of last week caused by a damaged fiber cable. Various activity involving the internet was not possible or unreliable at best.
• NDGF: Certificates on doors behind preprod-srm.ndgf.org expired Friday. New certs have been ordered, but it is unclear how quickly Sectigo can deliver. Monitoring of expiration had been forgotten. It has now been implemented.
• NL-T1:
  • Unable to dial in
  • Two upcoming downtimes: a warning for the Sara-matrix dCache on 21rst to 23rd: https://goc.egi.eu/portal/index.php?Page_Type=Downtime&id=29012 and a downtime for the Sara-matrix tape system 26th to 28th. https://goc.egi.eu/portal/index.php?Page_Type=Downtime&id=29088
• NRC-KI: NC
• OSG: NC
• PIC:
• RAL: NTR
• TRIUMF: NTR

• CERN computing services: NTR
• CERN storage services: NC
• CERN databases: One instance of CMSR database was restarted by clusterware yesterday evening (OTG:0057818)
• GGUS: NTR
• Monitoring: NTR
• MW Officer: NC
• Networks: NTR
• Security: NTR

AOB: