Tier1 Operations Report 2019-02-11

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RAL Tier1 Operations Report for 11th February 2019

Review of Issues during the week 28th January 2019 to the 5th February 2019.
  • Our tape robot experienced a 2 hour unscheduled outage on Wednesday. The issue was as the result of a failed network switch (internal to the robot), which was resolved after diligent use of the power switch.
  • CASTOR team are moving Alice to the new xrootd redirector setup.
  • Garbage collection issues with the new wlcgTape that were, in part, responsible for issues experienced by NA62 last week have now been understood and subsequently resolved.
  • The ARC-CE’s are intermittently reporting ‘unknown’ for SAM test results. We believe we understand the cause of this and upgrading to the current release version will resolve this issue.
Current operational status and issues
Resolved Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
- - - - -
Ongoing Castor Disk Server Issues
Machine VO DiskPool dxtx Comments
gdss811 LHCb lhcbDst d1t0 -
Limits on concurrent batch system jobs.
  • ALICE - 1000
Notable Changes made since the last meeting.
  • NTR
Entries in GOC DB starting since the last report.
Service ID Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - - -
Declared in the GOC DB
Service Scheduled? Outage/At Risk Start End Duration Reason
- - - - - - -
  • No ongoing downtime
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Listing by category:

  • DNS servers will be rolled out within the Tier1 network.
Open

GGUS Tickets (Snapshot taken during morning of the meeting).

Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
139477 ops in progress less urgent 01/02/2019 04/02/2019 Operations [Rod Dashboard] Issue detected : org.nordugrid.ARC-CE-submit-ops@arc-ce04.gridpp.rl.ac.uk EGI
139476 mice in progress less urgent 01/02/2019 04/02/2019 Other LFC dump EGI
139306 dteam in progress less urgent 24/01/2019 29/01/2019 Monitoring perfsonar hosts need updating EGI
138891 ops on hold less urgent 17/12/2018 05/02/2019 Operations [Rod Dashboard] Issue detected : egi.eu.lowAvailability-/RAL-LCG2@RAL-LCG2_Availability EGI
138665 mice on hold urgent 04/12/2018 30/01/2019 Middleware Problem accessing LFC at RAL EGI
138500 cms on hold urgent 26/11/2018 30/01/2019 CMS_Data Transfers Transfers failing from T2_PL_Swierk to RAL WLCG
138361 t2k.org in progress less urgent 19/11/2018 31/01/2019 Other RAL-LCG2: t2k.org LFC to DFC transition EGI
138033 atlas in progress urgent 01/11/2018 31/01/2019 Other singularity jobs failing at RAL EGI
137897 enmr.eu on hold urgent 23/10/2018 31/01/2019 Workload Management enmr.eu accounting at RAL EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
139538 cms solved urgent 05/02/2019 05/02/2019 CMS_Data Transfers Some transfers failing to RAL - SRM_AUTHORIZATION_FAILURE WLCG
139414 lhcb verified very urgent 30/01/2019 05/02/2019 Other Jobs Failed with Segmentation fault at RAL-LCG2 WLCG
139405 ops verified less urgent 30/01/2019 05/02/2019 Operations [Rod Dashboard] Issue detected : org.bdii.GLUE2-Validate@site-bdii.gridpp.rl.ac.uk EGI
139404 none verified top priority 30/01/2019 01/02/2019 Other This TEST ALARM has been raised for testing GGUS alarm work flow after a new GGUS release. WLCG
139380 cms solved urgent 29/01/2019 31/01/2019 CMS_Facilities T1_UK_RAL failing SAM tests inside Singularity WLCG
139375 atlas solved urgent 29/01/2019 04/02/2019 Other RAL-LCG2 transfers fail with "the server responded with an error 500" WLCG
139328 cms solved urgent 25/01/2019 29/01/2019 CMS_Facilities T1_UK_RAL SRM tests failing WLCG
139312 cms solved urgent 25/01/2019 29/01/2019 CMS_Data Transfers Corrupted files at RAL_Buffer? WLCG
139245 cms solved urgent 21/01/2019 04/02/2019 CMS_Data Transfers Transfers failing from CNAF_Disk to RAL_Buffer WLCG

Availability Report

Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2019-01-29 100 100 97 100 100 -1
2019-01-30 100 100 98 100 100 100
2019-01-31 100 100 100 100 100 100
2019-02-01 100 100 100 100 100 100
2019-02-02 100 100 98 100 100 100
2019-02-03 100 100 100 100 100 100
2019-02-04 100 100 100 100 100 100
2019-02-05 100 100 100 100 100 100
2019-02-06 100 100 100 100 100 100
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2019-01-23 100 98
2019-01-24 100 98
2019-01-25 100 98
2019-01-26 100 91
2019-01-27 100 97
2019-01-28 100 93
2019-01-29 100 98

Key: Atlas HC = Atlas HammerCloud (Queue RAL-LCG2_UCORE, Template 841); CMS HC = CMS HammerCloud

Notes from Meeting.