Difference between revisions of "Tier1 Operations Report 2015-04-01"

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* There were problems with the ARGUS server that affected batch work on Wednesday 18th March. This was fixed following a callout in the evening.
 
* There were problems with the ARGUS server that affected batch work on Wednesday 18th March. This was 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 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 20th, a problem was found and fixed that caused gridmap file updates to fail.
 
* On Thursday 26th March, an uplink cable was replaced on a core switch. This may have fixed connectivity problems reported by the Nebraska T2 in the USA.  
 
* On Thursday 26th March, an uplink cable was replaced on a core switch. This may have fixed connectivity problems reported by the Nebraska T2 in the USA.  
 
* 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. Most services were affected for approximately 2.5 hours (9:30 pm until midnight).
 
* 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. Most services were affected for approximately 2.5 hours (9:30 pm until midnight).
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! GGUS ID !! Level !! Urgency !! State !! Creation !! Last Update !! VO !! Subject
 
! GGUS ID !! Level !! Urgency !! State !! Creation !! Last Update !! VO !! Subject
 +
|-
 +
| 112721
 +
| Green
 +
| Less Urgent
 +
| In Progress
 +
| 2015-03-28
 +
| 2015-03-30
 +
| Atlas
 +
| RAL-LCG2: SOURCE Failed to get source file size
 
|-
 
|-
 
| 112713
 
| 112713
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| Urgent
 
| Urgent
 
| In Progress
 
| In Progress
−
| 2015-02-10
+
| 2015-03-27
−
| 2015-03-23
+
| 2015-03-31
−
| Atlas
+
| CMS
−
| gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP
+
| Please clean up unmerged area - RAL
 
|-
 
|-
 
| 111699
 
| 111699
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| In Progress
 
| In Progress
 
| 2014-11-03
 
| 2014-11-03
−
| 2015-03-18
+
| 2015-03-31
 
| SNO+
 
| SNO+
 
| gfal-copy failing for files at RAL
 
| gfal-copy failing for files at RAL
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| In Progress
 
| In Progress
 
| 2014-10-01
 
| 2014-10-01
−
| 2015-03-20
+
| 2015-03-30
 
| CMS
 
| CMS
 
| AAA access test failing at T1_UK_RAL
 
| AAA access test failing at T1_UK_RAL

Latest revision as of 10:18, 1 April 2015

RAL Tier1 Operations Report for 1st April 2015

Review of Issues during the fortnight 18th March to 1st April 2015.
  • There were problems with the ARGUS server that affected batch work on Wednesday 18th March. This was 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.
  • On Friday 20th, a problem was found and fixed that caused gridmap file updates to fail.
  • On Thursday 26th March, an uplink cable was replaced on a core switch. This may have fixed connectivity problems reported by the Nebraska T2 in the USA.
  • 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. Most services were affected for approximately 2.5 hours (9:30 pm until midnight).
Resolved Disk Server Issues
  • None
Current operational status and issues
  • We are running with a single router connecting the Tier1 network to the site network, rather than a resilient pair.
Ongoing Disk Server Issues
  • None
Notable Changes made this last week.
  • gfal2 and davix rpms are in the process of being updated across the worker nodes.
Declared in the GOC DB
Service Scheduled? Outage/At Risk Start End Duration Reason
All Castor (all SRM endpoints) SCHEDULED OUTAGE 08/04/2015 10:00 08/04/2015 14:00 4 hours Upgrade of Castor storage to version 2.1.14-15
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.
Advanced warning for other interventions
The following items are being discussed and are still to be formally scheduled and announced.
  • 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.
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 19/03/2015 07:45 19/03/2015 08:30 45 minutes Warning during tests of Tier1s network router. Possibility of two short (few minute) breaks in connectivity to the RAL Tier1.
Open GGUS Tickets (Snapshot during morning of meeting)
GGUS ID Level Urgency State Creation Last Update VO Subject
112721 Green Less Urgent In Progress 2015-03-28 2015-03-30 Atlas RAL-LCG2: SOURCE Failed to get source file size
112713 Green Urgent In Progress 2015-03-27 2015-03-31 CMS Please clean up unmerged area - RAL
111699 Green Less Urgent In Progress 2015-02-10 2015-03-23 Atlas gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP
109694 Red Urgent In Progress 2014-11-03 2015-03-31 SNO+ gfal-copy failing for files at RAL
108944 Red Less Urgent In Progress 2014-10-01 2015-03-30 CMS AAA access test failing at T1_UK_RAL
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
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 92 97 92 100 100 89 100 PDU problems caused switch to be without power
28/03/15 97 95 96 100 100 98 82 PDU problems caused switch to be without power
29/03/15 100 100 100 100 100 100 100
30/03/15 98 100 100 100 100 100 100 Single failed file transfer.
31/03/15 100 100 100 100 100 95 100
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