Tier1 Operations Report 2018-01-03

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RAL Tier1 Operations Report for 13th December 2017

Review of Issues during the week 13th to 20th December 2017.

Echo: • Background scrubbing has been going on. This has flushed out more bad disks – causing some callouts through the week.

Network: • Emergency card replacement at Harwell PoP on Thursday morning. This was announced to us and caused a short break in two out of the three OPN links (as expected)


Current operational status and issues
  • None
Resolved Castor Disk Server Issues
  • GDSS743 (AtlasDataDisk - D1T0) is back in production.
  • GDSS705 (AtlasTape - D0T1) is back in production.


Ongoing Castor Disk Server Issues
  • None
Limits on concurrent batch system jobs.
  • CMS Multicore 550
Notable Changes made since the last meeting.

Infrastructure: • There was a successful generator load test last Wednesday (13th Dec).

Certificates: • The re-updating to pick up the updated UK CA certificate in the IGTF 1.88 rollout took place successfully last Tuesday (12th) as planned.

Castor: • Three Castor disk servers were moved from LHCb tape buffer to their disk-only (D1T0) storage.

Entries in GOC DB starting since the last report.

No downtime scheduled in the GOCDB between 2017-12-12 and 2017-12-20

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)
Ticket-ID Type VO Notified Site Resp. Unit Status Priority Creation Last Update ToI Subject
132540 TEAM lhcb RAL-LCG2 NGI_UK assign to:lcg-support@gridpp.rl.ac.uk in progress top priority 2017-12-18 09:32:00 2017-12-18 11:36:00 Other Upload problems at RAL
132336 USER ops RAL-LCG2 NGI_UK in progress less urgent 2017-12-06 14:34:00 2017-12-18 11:40:00 Operations [Rod Dashboard] Issue detected : org.nagios.GLUE2-Check@site-bdii.gridpp.rl.ac.uk
132314 USER ops RAL-LCG2 NGI_UK assign to:lcg-support@gridpp.rl.ac.uk in progress less urgent 2017-12-05 10:48:00 2017-12-18 14:10:00 Operations [Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-SRM-result-ops@arc-ce02.gridpp.rl.ac.uk
131815 USER t2k.org RAL-LCG2 NGI_UK in progress less urgent 2017-11-13 14:42:00 2017-12-01 19:30:00 Storage Systems Extremely long download times for T2K files on tape at RAL
130207 USER mice RAL-LCG2 NGI_UK assign to:lcg-support@gridpp.rl.ac.uk on hold urgent 2017-08-24 09:46:00 2017-12-18 17:22:00 Network problem Timeouts when copyiing MICE reco data to CASTOR
127597 USER cms RAL-LCG2 NGI_UK assign to:lcg-support@gridpp.rl.ac.uk share with:sexton@fnal.gov on hold urgent 2017-04-07 10:34:00 2017-10-05 09:14:00 File Transfer Check networking and xrootd RAL-CERN performance
124876 USER ops RAL-LCG2 NGI_UK assign to:lcg-support@gridpp.rl.ac.uk on hold less urgent 2016-11-07 12:06:00 2017-11-13 16:55:00 Operations [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
117683 USER none RAL-LCG2 NGI_UK assign to:lcg-support@gridpp.rl.ac.uk on hold less urgent 2015-11-18 11:36:00 2017-11-06 16:59:00 Information System CASTOR at RAL not publishing GLUE 2
Availability Report
Day OPS Alice Atlas CMS LHCb Atlas Echo Comment
13/12/17 100 100 100 100 100 100
14/12/17 100 100 100 100 100 100
15/12/17 100 100 100 100 100 100
16/12/17 100 100 100 100 100 100
17/12/17 100 100 100 100 100 100
18/12/17 100 100 100 100 100 100
19/12/17 100 100 100 100 100 100
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
13/12/17 99 0 100 Atlas HC Echo - No test run in time bin
14/12/17 100 0 100 Atlas HC Echo - No test run in time bin
15/12/17 100 0 100 Atlas HC Echo - No test run in time bin
16/12/17 98 0 100 Atlas HC Echo - No test run in time bin
17/12/17 85 0 100 Atlas HC Echo - No test run in time bin
18/12/17 86 0 100 Atlas HC Echo - No test run in time bin
19/12/17 100 0 100 Atlas HC Echo - No test run in time bin
Notes from Meeting.
  • Ceph scrubbing is now running daytime only to help reduce call-outs at nights.