RAL Tier1 Operations Report for 8th November 2017
Review of Issues during the week 1st to 8th November 2017.
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- There was a failure of the CMS Castor stager headnode early morning yesterday (7th Nov). The physical box was replaced (using one from the Castor 'preprod) system and CMS Castor service resumed during the afternoon.
Current operational status and issues
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- 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).
Resolved Disk Server Issues
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Ongoing Disk Server Issues
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Limits on concurrent batch system jobs.
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Notable Changes made since the last meeting.
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- Re-distribution of data in Echo onto the 2015 capacity hardware is ongoing. This is expected to complete in a week or two.
- A start has been made on updating Castor tape servers to SL7.
- Tests have been made enabling IPv6 access to FTS.
Entries in GOC DB starting since the last report.
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Service
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Scheduled?
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Outage/At Risk
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Start
|
End
|
Duration
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Reason
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srm-cms.gridpp.rl.ac.uk,
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UNSCHEDULED
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OUTAGE
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07/11/2017 06:00
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07/11/2017 16:00
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10 hours
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Hardware problems with Stager server - CMS Castor instance
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Advanced warning for other interventions
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The following items are being discussed and are still to be formally scheduled and announced.
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Ongoing or Pending - but not yet formally announced:
- Re-distribute the data in Echo onto the 2015 capacity hardware. (Ongoing)
- Update the LHCb Castor SRMs so as to be able to configure timeouts.
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.
- Update to next CEPH version ("Luminous").
- 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.
Open GGUS Tickets (Snapshot during morning of meeting)
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GGUS ID |
Level |
Urgency |
State |
Creation |
Last Update |
VO |
Subject
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131688
|
Green
|
Urgent
|
Assigned
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2017-11-07
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2017-11-08
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CMS
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T1_UK_RAL has SAM3 CE critical > 2hours
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131299
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Green
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Urgent
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Assigned
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2017-10-24
|
2017-10-24
|
CMS
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T1_UK_RAL HammerCloud failures
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131213
|
Green
|
Urgent
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In Progress
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2017-10-19
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2017-11-06
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CMS
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Issues with fallback requests
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130949
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Amber
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Urgent
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Waiting for Reply
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2017-10-06
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2017-10-25
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CMS
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Transfers failing to T1_UK_RAL_Disk
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130207
|
Red
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Urgent
|
In Progress
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2017-08-24
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2017-10-25
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MICE
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Timeouts when copyiing MICE reco data to CASTOR
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127597
|
Red
|
Urgent
|
On Hold
|
2017-04-07
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2017-10-05
|
OPS
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Check networking and xrootd RAL-CERN performance
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124876
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Red
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Less Urgent
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On Hold
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2016-11-07
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2017-01-01
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CMS
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[Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
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124876
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Red
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Less Urgent
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On Hold
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2015-11-18
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2017-11-06
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NONE
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CASTOR at RAL not publishing GLUE 2
|
Day |
OPS |
Alice |
Atlas |
CMS |
LHCb |
Atlas Echo |
Comment
|
01/11/17 |
100 |
100 |
100 |
0 |
100 |
100 |
SRM Test failures.
|
02/10/17 |
100 |
100 |
100 |
0 |
100 |
100 |
SRM Test failures.
|
03/10/17 |
100 |
100 |
100 |
0 |
100 |
100 |
SRM Test failures.
|
04/10/17 |
100 |
100 |
100 |
0 |
100 |
100 |
SRM Test failures.
|
05/10/17 |
100 |
100 |
100 |
0 |
100 |
100 |
SRM Test failures.
|
06/10/17 |
100 |
100 |
100 |
0 |
100 |
100 |
SRM Test failures.
|
07/10/17 |
100 |
100 |
100 |
0 |
100 |
100 |
CMS: CE test failures caused by xroot data access problems to echo.
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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
|
01/11/17 |
98 |
97 |
99 |
|
02/11/17 |
95 |
99 |
98 |
|
03/11/17 |
100 |
95 |
100 |
|
04/11/17 |
100 |
98 |
100 |
|
05/11/17 |
100 |
95 |
100 |
|
06/11/17 |
100 |
96 |
98 |
|
07/11/17 |
100 |
0 |
39 |
|