Difference between revisions of "Tier1 Operations Report 2014-08-13"

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! Reason
 
! Reason
 
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|perfsonar-ps01.gridpp.rl.ac.uk, perfsonar-ps02.gridpp.rl.ac.uk,  
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|lcgfts.gridpp.rl.ac.uk,  
 
| SCHEDULED
 
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| OUTAGE
 
| OUTAGE
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| 14/07/2014 11:00
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| 02/09/2014 11:00
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| 14/08/2014 11:00
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| 02/10/2014 11:00
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| 31 days,  
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| 30 days,  
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| Systems being decommissioned. They have been replaced by lcgps01.gridpp.rl.ac.uk and lcgps02.gridpp.rl.ac.uk
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|Service being decommissioned.
 
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Revision as of 09:57, 13 August 2014

RAL Tier1 Operations Report for 13th August 2014

Review of Issues during the week 6th to 13th August 2014.
  • Discrepancies were found in some of the Castor database tables and columns. The Castor team are considering options with regard to fixing these. The issue has no operational impact.
  • The problem with the dteam SRM regional nagios tests has been fixed with a CIP update.
  • The fix to the problems with the RIP on the tier1 routers was rolled out on Thursday 31st July as announced. RIP did not start on the routers and this is being investigated by the networking team.
  • At about 22:15 on Friday 1st Aug, a network fault on site caused the Tier1 routers to flip the active routing system from rtr-x670v-1 to rtr-x670v-2. This is expected behaviour when a link dies. The active route was changed back on Tuesday 5th Aug at 10:15.
Resolved Disk Server Issues
  • Gdss680 was returned to production on thursday 31st July.
Current operational status and issues
  • There are problems with disk server draining for Atlas in Castor 2.1.4. This is under investigation.
  • We are still investigating xroot access to CMS Castor following the upgrade on the 17th June. The service has improved but there may still be work to be done.
Ongoing Disk Server Issues
  • None
Notable Changes made this last week.
  • 10 disk servers deployed into lhcbDst
Declared in the GOC DB
Service Scheduled? Outage/At Risk Start End Duration Reason
lcgfts.gridpp.rl.ac.uk, SCHEDULED OUTAGE 02/09/2014 11:00 02/10/2014 11:00 30 days, Service being decommissioned.
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.
  • The rollout of the RIP protocol to the Tier1 routers still has to be completed.
  • We are planning the termination of the FTS2 service (announced for 2nd September) now that almost all use is on FTS3.
  • The removal of the (NFS) software server is scheduled for the 2nd September.
  • We are planning stop access to the cream CEs - although possibly leaving them available to ALICE for some time. No date has yet been specified for this.

Listing by category:

  • Databases:
    • Switch LFC/FTS/3D to new Database Infrastructure.
  • Castor:
    • None.
  • Networking:
    • Move switches connecting the 2011 disk servers batches onto the Tier1 mesh network.
    • Make routing changes to allow the removal of the UKLight Router.
  • Fabric
    • We are phasing out the use of the software server used by the small VOs.
    • Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
    • There will be circuit testing of the remaining (i.e. non-UPS) circuits in the machine room during 2014.
Entries in GOC DB starting between the 6th and 13th August 2014.
  • None
Open GGUS Tickets (Snapshot during morning of meeting)
GGUS ID Level Urgency State Creation Last Update VO Subject
107416 Yellow Less Urgent waiting for reply 2014-07-31 2014-08-04 Atlas RAL FTS parameters for communication with US MWT2
106324 Red Urgent In Progress 2014-06-18 2014-08-05 CMS pilots losing network connections at T1_UK_RAL
105405 Red Urgent On Hold 2014-05-14 2014-07-29 please check your Vidyo router firewall configuration
Availability Report

Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_SL6, Template 508); CMS HC = CMS HammerCloud

Day OPS Alice Atlas CMS LHCb Atlas HC CMS HC Comment
06/08/14 100 100 100 98.7 100 97 99 Problem triggered by rebalancing (started late evening)
07/08/14 100 100 100 87.4 100 99 99 Problem triggered by rebalancing (continued)
08/08/14 100 100 100 100 100 100 100
09/08/14 100 100 100 100 100 100 100
10/08/14 100 100 100 100 100 100 100
11/08/14 100 100 100 100 100 100 100
12/08/14 100 100 98.9 100 100 100 100 Single test failure (SRMServer restart on one of Atlas SRMs.)
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