Difference between revisions of "Tier1 Operations Report 2017-10-18"

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'''Listing by category:'''
 
'''Listing by category:'''
 
* Castor:  
 
* Castor:  
 +
** Update systems (initially tape servers) to use SL7 and configured by Quattor/Aquilon.
 
** Move to generic Castor headnodes.
 
** Move to generic Castor headnodes.
 
* Echo:
 
* Echo:

Latest revision as of 15:44, 18 October 2017

RAL Tier1 Operations Report for 18th October 2017

Review of Issues during the week 11th to 18th October 2017.
  • There was a problem with Atlas file transfers to Echo that started last week. This was traced to the update to the "test" FTS3 service (used by Atlas). During this upgrade some FTS settings were changed. The relevant parameter here being the number of concurrent streams for a transfer. The FTS3 settings were re-instated earlier this week and the problem solved.
Resolved Disk Server Issues
  • GDSS788 (AtlasDataDisk - D1T0) crashed during the early evening of Wednesday 11th Oct). It was returned to service at the end of the same day - although no faults were found with the server.
  • GDSS816 failed on Saturday mornig, 14th Oct. The (single) SSD that contains the OS had failed. This was replaced and the OS reinstalled. The service was returned to service at the end of Monday afternoon (16th Oct).
  • GDSS747 (AtlasDataDisk - D1T0) was taken out of srevice on Monday afternoon (16th Oct) with two failed disk drives. It was returned to service the following afternoon (initially read-only) after the first failed disk had been replaced and the RAID array rebuilt.
Current operational status and issues
  • There is a problem on the site firewall which is causing problems for some specific data flows. Discussions have been taking place with the vendor. This is having an effect on our data that flows through the firewall (such as to/from worker nodes).
Ongoing Disk Server Issues
  • None
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 ongoing.
  • Update of the Production FTS3 service to version to 3.7.4 took place last Thursday (12th Oct).
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.

Pending - but not yet formally announced:

  • Re-distribute the data in Echo onto the 2015 capacity hardware. (Ongoing)

Listing by category:

  • Castor:
    • Update systems (initially tape servers) to use SL7 and configured by Quattor/Aquilon.
    • Move to generic Castor headnodes.
  • Echo:
    • Re-distribute the data in Echo onto the remaining 2015 capacity hardware.
  • Networking
    • Extend the number of services on the production network with IPv6 dual stack. (Done for Perfsonar, all squids and the CVMFS Stratum-1 servers).
  • Services
    • The Production and "Test" (Atlas) FTS3 services will be merged and will make use of a resilient distributed database.
Entries in GOC DB starting since the last report.
Service Scheduled? Outage/At Risk Start End Duration Reason
lcgfts3.gridpp.rl.ac.uk UNSCHEDULED OUTAGE 12/10/2017 13:00 12/10/2017 14:55 1 hour and 55 minutes Upgrade of FTS from 3.5.7 to 3.7.4 ongoing
lcgfts3.gridpp.rl.ac.uk SCHEDULED OUTAGE 12/10/2017 10:00 12/10/2017 13:00 3 hours Upgrading FTS to 3.7.4
Open GGUS Tickets (Snapshot during morning of meeting)
GGUS ID Level Urgency State Creation Last Update VO Subject
130949 Green Urgent In Progress 2017-10-06 2017-10-10 CMS Transfers failing to T1_UK_RAL_Disk
130883 Green Urgent Waiting for Reply 2017-10-02 2017-10-13 CMS T1_UK_RAL_Disk to T2_US_Florida transfers are failing due to missing file(s)
130207 Amber Urgent On Hold 2017-08-24 2017-10-11 MICE Timeouts when copying MICE reco data to CASTOR
130193 Amber Urgent In Progress 2017-08-23 2017-10-13 CMS Staging from RAL tape systems
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 2017-01-01 OPS [Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
117683 Red Less Urgent On Hold 2015-11-18 2017-07-06 CASTOR at RAL not publishing GLUE 2.
Availability Report
Day OPS Alice Atlas CMS LHCb Atlas Echo Comment
11/10/17 100 100 100 100 100 100
12/10/17 100 100 100 100 100 100
13/10/17 100 100 100 97 100 100 SRM test failure: Unable to issue PrepareToPut request to Castor
14/10/17 100 100 100 91 100 100 SRM test failures: Unable to issue PrepareToPut request to Castor
15/10/17 100 100 100 98 100 100 SRM test failure: Unable to issue PrepareToPut request to Castor
16/10/17 100 100 100 97 100 100 SRM test failure: Unable to issue PrepareToPut request to Castor
17/10/17 100 100 100 99 100 100 Monitoring problem.
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
11/10/17 99 97 95
12/10/17 100 100 99
13/10/17 100 100 100
14/10/17 99 100 100
15/10/17 100 100 96
16/10/17 100 100 96
17/10/17 100 100 N/A
Notes from Meeting.
  • None yet