(r6) WLCGOpsMeetingWeek171120 < LCG

LCG Web>WLCGCommonComputingReadinessChallenges>WLCGOperationsMeetings>WLCGOpsMeetingWeek171120 (revision 6) (raw view)~~EditAttachPDF~~

---+!! Week of 171120

%TOC%

---++ WLCG Operations Call details

   * At CERN the meeting room is [[https://maps.cern.ch/mapsearch/?centerX=2492565&centerY=1121070&centerScale=2500][513]] R-068.

   * For remote participation we use the Vidyo system. Instructions can be found [[https://indico.cern.ch/conferenceDisplay.py?confId=287280][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 until 15:20, exceptionally to 15:30.
   * The SCOD rota for the next few weeks is at ScodRota
   * General information about the WLCG Service can be accessed from the [[https://wlcg-ops.web.cern.ch/][Operations Web]]
   * Whenever a particular topic needs to be discussed at the daily meeting requiring information from site or experiments, it is highly recommended to announce it by email to wlcg-operations@cernSPAMNOT.ch to make sure that the relevant parties have the time to collect the required information or invite the right people at the meeting.

---++ Tier-1 downtimes

Experiments may experience problems if two or more of their Tier-1 sites are inaccessible at the same time. Therefore Tier-1 sites should do their best to avoid scheduling a downtime classified as "outage" in a time slot overlapping with an "outage" downtime already declared by another Tier-1 site supporting the same VO(s). The following procedure is recommended:
   1 A Tier-1 should check the downtimes calendar to see if another Tier-1 has already an "outage" downtime in the desired time slot.
   1 If there is a conflict, another time slot should be chosen.
   1 In case stronger constraints cannot allow to choose another time slot, the Tier-1 will point out the existence of the conflict to the SCOD mailing list and at the next WLCG operations call, to discuss it with the representatives of the experiments involved and the other Tier-1.

As an additional precaution, the SCOD will check the downtimes calendar for Tier-1 "outage" downtime conflicts at least once during his/her shift, for the current and the following two weeks; in case a conflict is found, it will be discussed at the next operations call, or offline if at least one relevant experiment or site contact is absent.

---++ Links to Tier-1 downtimes

%INCLUDE{ "WLCGDowntimesTemplate" }%

---++ Monday

Attendance:
   * local:
   * remote:

Experiments round table:

   * ATLAS [[AtlasComputing.ADCOperationsWeeklySummaries2017][reports]] ( [[AtlasComputing.ADCOperationsWeeklySummaries2017?raw=on][raw view]]) -

   * CMS [[CMS.FacOps_WLCGdailyreports][reports]] ( [[CMS.FacOps_WLCGdailyreports?raw=on][raw view]]) -

   * ALICE -
      * High to very high activity on average
      * CERN: ~all 1.2 M files lost from the EOS namespace were recovered, thanks!
         * Some calibration DB files were found having zero size. Being followed up.
      * CERN: EOS failures due to 1 link to Wigner being down Thu/Fri (OTG:0040930).
      * CERN: CASTOR incident Sun evening due to DB outage (OTG:0040966).

   * LHCb [[LHCb.ProductionOperationsWLCGdailyReports][reports]] ( [[LHCb.ProductionOperationsWLCGdailyReports?raw=on][raw view]]) -

Sites / Services round table:

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

   * CERN computing services:
   * CERN storage services:
   * CERN databases:
   * GGUS:
   * Monitoring:
      * Final reports for the Oct 2017 availability sent around
   * MW Officer: NTR
   * Networks:
   * Security: NTR

AOB:

Topic revision: r6 - 2017-11-20 - VincentBrillault

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