RAL Tier1 Operations Report for 1st April 2015
Review of Issues during the fortnight 18th March to 1st April 2015.
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- There were problems with the argus server that affected batch work on wed 18th March. This as fixed following a callout in the evening.
- A further investigation into the primary Tier1 router on the morning of Thursday 19th March failed to fix the problem whereby the router fails after a few minutes in service.
- A problem was found and fixed that caused gridmap file updates to fail.
- On Friday the 27th March a PDU powering a network switch turned itself off. This affected connectivity to many of the database servers. Staff attended site and reset the PDU.
Resolved Disk Server Issues
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Current operational status and issues
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- We are running with a single router connecting the Tier1 network to the site network, rather than a resilient pair.
Ongoing Disk Server Issues
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Notable Changes made this last week.
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- gfal2 and davix rpms are in the process of being updated across the worker nodes.
Service
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Scheduled?
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Outage/At Risk
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Start
|
End
|
Duration
|
Reason
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All Castor (all SRM endpoints)
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SCHEDULED
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OUTAGE
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08/04/2015 10:00
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08/04/2015 14:00
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4 hours
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Upgrade of Castor storage to version 2.1.14-15
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Whole site
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SCHEDULED
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WARNING
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01/04/2015 07:45
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01/04/2015 11:00
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3 hours and 15 minutes
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Warning on site for network test/reconfiguration and load test of UPS/generator.
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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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- Separate some non-Tier1 services off our network so as to be able to more easily investigate the router problems.
- Update Castor to 2.1-14-15 (Proposed date - Wednesday 8th April).
Listing by category:
- Databases:
- Switch LFC/3D to new Database Infrastructure.
- Update to Oracle 11.2.0.4
- Castor:
- Update Castor to 2.1.14-15 (Proposed date - Wednesday 8th April).
- Update SRMs to new version (includes updating to SL6).
- Fix discrepancies found in some of the Castor database tables and columns. (The issue has no operational impact.)
- Networking:
- Resolve problems with primary Tier1 Router
- Enable the RIP protocol for updating routing tables on the Tier1 routers. (Install patch to Router software).
- Increase bandwidth of the link from the Tier1 into the RAL internal site network to 40Gbit.
- Make routing changes to allow the removal of the UKLight Router.
- Fabric
- Firmware updates on remaining EMC disk arrays (Castor, FTS/LFC)
Entries in GOC DB starting since the last report.
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Service
|
Scheduled?
|
Outage/At Risk
|
Start
|
End
|
Duration
|
Reason
|
Whole site
|
SCHEDULED
|
WARNING
|
01/04/2015 07:45
|
01/04/2015 11:00
|
3 hours and 15 minutes
|
Warning on site for network test/reconfiguration and load test of UPS/generator.
|
Whole site
|
SCHEDULED
|
WARNING
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19/03/2015 07:45
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19/03/2015 08:30
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45 minutes
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Warning during tests of Tier1s network router. Possibility of two short (few minute) breaks in connectivity to the RAL Tier1.
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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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111699
|
Green
|
Less Urgent
|
In Progress
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2015-02-10
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2015-03-23
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Atlas
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gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP
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109694
|
Red
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Urgent
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In Progress
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2014-11-03
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2015-03-18
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SNO+
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gfal-copy failing for files at RAL
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108944
|
Red
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Less Urgent
|
In Progress
|
2014-10-01
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2015-03-20
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CMS
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AAA access test failing at T1_UK_RAL
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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
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18/03/15 |
100 |
100 |
99 |
92 |
92 |
100 |
100 |
CE tests failed owing to ARGUS problem.
|
19/03/15 |
100 |
100 |
100 |
96 |
100 |
99 |
98 |
Failed single SRM test and had some CE test errors. At time of planned network intervention.
|
20/03/15 |
100 |
100 |
100 |
100 |
100 |
98 |
97 |
|
21/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
98 |
|
22/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
99 |
|
23/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
96 |
|
24/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
25/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
26/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
27/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
28/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
29/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
30/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
31/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
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