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.
- 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
|
| 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
|
| Notable Changes made this last week.
|
- gfal2 and davix rpms are in the process of being updated across the worker nodes.
| 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
|
| 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
|
2015-03-18
|
SNO+
|
gfal-copy failing for files at RAL
|
| 108944
|
Red
|
Less Urgent
|
In Progress
|
2014-10-01
|
2015-03-20
|
CMS
|
AAA access test failing at T1_UK_RAL
|
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 |
|
