Tier1 Operations Report 2018-07-23

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RAL Tier1 Operations Report for 23rd July 2018

Review of Issues during the week 16th July to the 23rd July 2018.
  • Tier-1 has been very much business as usual this week. The only incident of real note was the loss of an Atlas server(gdss747 - d1t0). This incident involved a lost drive that was found to be not recoverable. Subsequently a data loss declared. Under normal circumstances this would be considered a serious incident, however Atlas are all but complete in the process of migrating from CASTOR to ECHO. As such, no primary data had been lost with 89% of lost data comprising log files.
Current operational status and issues
  • None.
Resolved Castor Disk Server Issues
  • None
Ongoing Castor Disk Server Issues
  • None.
Limits on concurrent batch system jobs.
  • CMS Multicore 550
Notable Changes made since the last meeting.
  • None.
Entries in GOC DB starting since the last report.
  • See "Declared in the GOC DB"
Declared in the GOC DB
Service ID Scheduled? Outage/At Risk Start End Duration Reason
Everything! 25670 SCHEDULED WARNING 24/07/2018 09:00 24/07/2018 16:30 1 days Site in Warning during testing of electrical circuits in the computer room. Ticket the site as usual if you see problems. All services should continue working during these tests but there is an increased likelihood of problems.
Everything! 25671 SCHEDULED WARNING 25/07/2018 09:00 25/07/2018 16:30 1 days Site in Warning during testing of electrical circuits in the computer room. Ticket the site as usual if you see problems. All services should continue working during these tests but there is an increased likelihood of problems.
Everything! 25672 SCHEDULED WARNING 26/07/2018 09:00 26/07/2018 16:30 1 days Site in Warning during testing of electrical circuits in the computer room. Ticket the site as usual if you see problems. All services should continue working during these tests but there is an increased likelihood of problems.
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.

Listing by category:

  • Castor:
    • Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
    • Move to generic Castor headnodes.
  • Internal
    • 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
136270 cms in progress urgent 22/07/2018 23/07/2018 CMS_Facilities T1_UK_RAL xrootd access failures WLCG
136199 lhcb in progress very urgent 18/07/2018 23/07/2018 File Transfer Lots of submitted transfers on RAL FTS WLCG
136138 t2k.org in progress urgent 16/07/2018 17/07/2018 File Access Extremely long download times for T2K files on tape at RALL - Part 2 EGI
136104 ops in progress less urgent 13/07/2018 13/07/2018 Operations [Rod Dashboard] Issues detected at RAL-LCG2 EGI
136028 cms in progress very urgent 10/07/2018 20/07/2018 CMS_AAA WAN Access Issues reading files at T1_UK_RAL_Disk WLCG
134685 dteam in progress less urgent 23/04/2018 09/07/2018 Middleware please upgrade perfsonar host(s) at RAL-LCG2 to CentOS7 EGI
124876 ops reopened less urgent 07/11/2016 28/06/2018 Operations [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk EGI
GGUS Tickets Closed Last week
Request id Affected vo Status Priority Date of creation Last update Type of problem Subject Scope
136229 cms solved very urgent 19/07/2018 19/07/2018 Data Management - generic RAL FTS Service not reachable via IPv6 EGI
136110 atlas solved urgent 13/07/2018 17/07/2018 File Transfer RAL-LCG2: Transfer errors as source with "SRM_FILE_UNAVAILABLE" WLCG
136097 other solved urgent 13/07/2018 19/07/2018 Operations Please restart frontier-squid on RAL cvmfs stratum 1 EGI
135940 cms closed urgent 04/07/2018 20/07/2018 CMS_Data Transfers Transfers failing to RAL_Disk - no data available WLCG
135822 cms closed very urgent 26/06/2018 19/07/2018 CMS_Central Workflows File Read Problems for Production at T1_UK_RAL WLCG

Availability Report

Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas Atlas-Echo CMS LHCB Alice OPS Comments
2018-07-16 100 100 100 100 100 100
2018-07-17 100 100 95 100 100 100
2018-07-18 100 100 92 100 100 100
2018-07-19 94 100 93 100 100 100
2018-07-20 100 100 93 100 100 100
2018-07-21 100 100 96 100 100 100
2018-07-22 100 100 98 100 100 100
2018-07-23 100 100 100 100 100 100
Hammercloud Test Report
Target Availability for each site is 97.0% Red <90% Orange <97%
Day Atlas HC CMS HC Comment
2018-07-16 94 99
2018-07-17 89 99
2018-07-18 77 98
2018-07-19 93 99
2018-07-20 83 97
2018-07-21 97 100
2018-07-22 93 100
2018-07-23 - -

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

Notes from Meeting.