Tier1 Operations Report 2017-11-29

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RAL Tier1 Operations Report for 29th November 2017

Review of Issues during the week 16th to 22th November 2017.
  • There was a power outage affecting the RAL site (and wider area), on the 20th November at around 12:05. This lasted around 10 minutes. Services impacted were Tier1, SCARF, Jasmin, Databases etc. However, many services have stayed up (i.e. those on UPS). All services were back by 18:34.
  • Production FTS was migrated to a distributed database for the back-end. (Tuesday, 21st November).
Current operational status and issues
Resolved Disk Server Issues
  • GDSS776 - (LHCbDst D1T0) crashed 14/11/17. GDSS776 is now ready to go back to full production mode.
Ongoing Disk Server Issues
  • GDSS698 - FSProbe Error on GDSS698 - Failed disk has been replaced and is being rebuilt.
  • GDSS740 - RAID Partially Degraded. Failed disk has been replaced and is being rebuilt.
Limits on concurrent batch system jobs.
  • CMS Multicore 550
Notable Changes made since the last meeting.
  • Re-distribution of data in Echo onto the 2015 capacity hardware is now complete. There are now 8PBytes of usable space in Echo. However, there is some data rebalancing to be done before upping the quotas so the VOs can make use of the extra space.
  • Intervention to migrate the MySQL DB to a new MariasDB Galera cluster for the 'prod' FTS instance has been completed.
  • Echo configuration modified to allow Atlas an additional 500TB of space on Echo bringing their current total to 3600TB.
Entries in GOC DB starting since the last report.


Service Scheduled? Outage/At Risk Start End Duration Reason
lcgfts3.gridpp.rl.ac.uk, SCHEDULED OUTAGE 21/11/2017 07:00 21/11/2017 15:00 8 hours MySQL backend consolidation
srm-alice.gridpp.rl.ac.uk, srm-atlas.gridpp.rl.ac.uk, srm-biomed.gridpp.rl.ac.uk, srm-cert.gridpp.rl.ac.uk, srm-cms-disk.gridpp.rl.ac.uk, srm-cms.gridpp.rl.ac.uk, srm-dteam.gridpp.rl.ac.uk, srm-ilc.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-mice.gridpp.rl.ac.uk, srm-minos.gridpp.rl.ac.uk, srm-na62.gridpp.rl.ac.uk, srm-pheno.gridpp.rl.ac.uk, srm-preprod.gridpp.rl.ac.uk, srm-snoplus.gridpp.rl.ac.uk, srm-solid.gridpp.rl.ac.uk, srm-t2k.gridpp.rl.ac.uk, UNSCHEDULED OUTAGE 20/11/2017 15:00 20/11/2017 18:01 3 hours and 1 minutes RAL Tier1 Power outage update : All systems now back with the exception of CASTOR.
arc-ce01.gridpp.rl.ac.uk, arc-ce01.gridpp.rl.ac.uk, arc-ce01.gridpp.rl.ac.uk, arc-ce02.gridpp.rl.ac.uk, arc-ce02.gridpp.rl.ac.uk, arc-ce02.gridpp.rl.ac.uk, arc-ce03.gridpp.rl.ac.uk, arc-ce03.gridpp.rl.ac.uk, arc-ce03.gridpp.rl.ac.uk, arc-ce04.gridpp.rl.ac.uk, arc-ce04.gridpp.rl.ac.uk, arc-ce04.gridpp.rl.ac.uk, argusngi.gridpp.rl.ac.uk, atlas-squid.gridpp.rl.ac.uk, cms-squid.gridpp.rl.ac.uk, gridftp.echo.stfc.ac.uk, ip6tb-ps01.gridpp.rl.ac.uk, ip6tb-ps01.gridpp.rl.ac.uk, lcgargus01.gridpp.rl.ac.uk, lcgbdii.gridpp.rl.ac.uk, lcgft-atlas.gridpp.rl.ac.uk, lcgfts3.gridpp.rl.ac.uk, lcglb01.gridpp.rl.ac.uk, lcglb02.gridpp.rl.ac.uk, lcgps01.gridpp.rl.ac.uk, lcgps02.gridpp.rl.ac.uk, lcgvo07.gridpp.rl.ac.uk, lcgvo08.gridpp.rl.ac.uk, lcgwms04.gridpp.rl.ac.uk, lcgwms05.gridpp.rl.ac.uk, lfc.gridpp.rl.ac.uk, lfc.gridpp.rl.ac.uk, myproxy.gridpp.rl.ac.uk, openstack.stfc.ac.uk, s3.echo.stfc.ac.uk, s3.echo.stfc.ac.uk, site-bdii.gridpp.rl.ac.uk, srm-alice.gridpp.rl.ac.uk, srm-atlas.gridpp.rl.ac.uk, srm-biomed.gridpp.rl.ac.uk, srm-cert.gridpp.rl.ac.uk, srm-cms-disk.gridpp.rl.ac.uk, srm-cms.gridpp.rl.ac.uk, srm-dteam.gridpp.rl.ac.uk, srm-ilc.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-mice.gridpp.rl.ac.uk, srm-minos.gridpp.rl.ac.uk, srm-na62.gridpp.rl.ac.uk, srm-pheno.gridpp.rl.ac.uk, srm-preprod.gridpp.rl.ac.uk, srm-snoplus.gridpp.rl.ac.uk, srm-solid.gridpp.rl.ac.uk, srm-t2k.gridpp.rl.ac.uk, vacuum.gridpp.rl.ac.uk, xrootd-cms-uk.gridpp.rl.ac.uk, xrootd.echo.stfc.ac.uk, UNSCHEDULED OUTAGE 20/11/2017 12:05 20/11/2017 15:00 2 hours and 55 minutes Site power cut Power restored, investigations ongoing.
srm-lhcb.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, SCHEDULED OUTAGE 15/11/2017 10:00 15/11/2017 10:40 40 minutes LHCb CASTOR SRM Update to 2.1.16-18
Declared in the GOC DB
  • None
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Ongoing or Pending - but not yet formally announced:

Listing by category:

  • Castor:
    • Update systems (initially tape servers) to use SL7 and configured by Quattor/Aquilon.
    • Move to generic Castor headnodes.
  • Echo:
    • Update to next CEPH version ("Luminous").
  • Networking
    • Extend the number of services on the production network with IPv6 dual stack. (Done for Perfsonar, FTS3, all squids and the CVMFS Stratum-1 servers).
  • Services
  • Internal
    • DNS servers will be rolled out within the Tier1 network.
Open GGUS Tickets (Snapshot during morning of meeting)
GGUS ID Level Urgency State Creation Last Update VO Subject
132094 Green To Priority In Progress 2017-11-28 2017-11-28 LHCB Connection timeout srm-lhcb
131840 Green Urgent Waiting for reply 2017-11-14 2017-11-15 Other solidexperiment.org CASTOR tape copy fails
131815 Green Less Urgent In Progress 2017-11-13 2017-11-20 T2K.Org Extremely long download times for T2K files on tape at RAL
130207 Red Urgent On Hold 2017-08-24 2017-11-13 MICE Timeouts when copyiing MICE reco data to CASTOR
127597 Red Urgent On Hold 2017-04-07 2017-10-05 CMS Check networking and xrootd RAL-CERN performance
124876 Red Less Urgent On Hold 2016-11-07 2017-11-13 Ops [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
117683 Red Less Urgent On Hold 2015-11-18 2017-11-06 None CASTOR at RAL not publishing GLUE 2
Availability Report
Day OPS Alice Atlas CMS LHCb Atlas Echo Comment
23/11/17 100 100 100 99 100 100
24/11/17 100 100 100 100 100 100
25/11/17 100 100 100 100 100 100
26/11/17 100 100 100 100 100 100
27/11/17 100 100 100 100 100 100
28/11/17 100 100 98 100 100 100
29/11/17 100 100 199 100 100 100
Hammercloud Test Report

Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 845); Atlas HC Echo = Atlas Echo (Template 841);CMS HC = CMS HammerCloud

Day Atlas HC Atlas HC Echo CMS HC Comment
15/11/17 100 99 100
16/11/17 100 100 100
17/11/17 100 97 99
18/11/17 100 100 100
19/11/17 99 100 100
20/11/17 99 99 92
21/11/17 95 100 99
Notes from Meeting.
  • None yet