Difference between revisions of "Tier1 Operations Report 2016-02-17"
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| In Progress | | In Progress | ||
| 2015-11-18 | | 2015-11-18 | ||
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| CASTOR at RAL not publishing GLUE 2 | | CASTOR at RAL not publishing GLUE 2 | ||
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| In Progress | | In Progress | ||
| 2015-10-12 | | 2015-10-12 | ||
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| CMS | | CMS | ||
| T1_UK_RAL AAA opening and reading test failing again... | | T1_UK_RAL AAA opening and reading test failing again... |
Latest revision as of 09:42, 17 February 2016
RAL Tier1 Operations Report for 17th February 2016
Review of Issues during the week 10th to 17th February 2016. |
- The OPN link to CERN continues to be busy - although less so than during the previous fortnight.
Resolved Disk Server Issues |
- GDSS671 (AliceDisk - D1T0) failed on Saturday (13th Feb). Following tests and a disk being replaced it was returned to service on Monday (15th Feb).
Current operational status and issues |
- There is a problem seen by LHCb of a low but persistent rate of failure when copying the results of batch jobs to Castor. There is also a further problem that sometimes occurs when these (failed) writes are attempted to storage at other sites. A recent modification has improved, but not completed fixed this.
- The intermittent, low-level, load-related packet loss seen over external connections is still being tracked. Likewise we have been working to understand some remaining low level of packet loss seen within a part of our Tier1 network.
Ongoing Disk Server Issues |
- None
Notable Changes made since the last meeting. |
- The Castor repack instance was updated from version 2.1.14.13 to 2.1.14.15.
- Ongoing Condor updates (to version 8.4.4) on batches of worker nodes.
Declared in the GOC DB |
Service | Scheduled? | Outage/At Risk | Start | End | Duration | Reason |
---|---|---|---|---|---|---|
Whole Site | SCHEDULED | WARNING | 23/02/2016 09:00 | 23/02/2016 12:00 | 3 hours | Warning on Site during an infrastucture upgrade. |
Advanced warning for other interventions |
The following items are being discussed and are still to be formally scheduled and announced. |
Listing by category:
- Databases:
- Switch LFC/3D to new Database Infrastructure.
- Castor:
- Update SRMs to new version (includes updating to SL6).
- Update to Castor version 2.1.15.
- Migration of data from T10KC to T10KD tapes (affects Atlas & LHCb data).
- Networking:
- Replace the UKLight Router. Then upgrade the 'bypass' link to the RAL border routers to 2*10Gbit.
- Fabric
- Firmware updates on remaining EMC disk arrays (Castor, LFC)
- Grid Services
- A Load Balancer (HAProxy) will be used in front of the FTS service.
Entries in GOC DB starting since the last report. |
- None
Open GGUS Tickets (Snapshot during morning of meeting) |
GGUS ID | Level | Urgency | State | Creation | Last Update | VO | Subject |
---|---|---|---|---|---|---|---|
119389 | Green | Urgent | Waiting Reply | 2016-02-05 | 2016-02-15 | LHCb | Data transfer problem to RAL BUFFER |
118809 | Yellow | Urgent | On Hold | 2016-01-05 | 2016-01-13 | Towards a recommendation on how to configure memory limits for batch jobs | |
117683 | Green | Less Urgent | In Progress | 2015-11-18 | 2016-02-16 | CASTOR at RAL not publishing GLUE 2 | |
116864 | Red | Urgent | In Progress | 2015-10-12 | 2016-02-16 | CMS | T1_UK_RAL AAA opening and reading test failing again... |
109358 | Green | Less Urgent | Waiting Reply | 2015-02-05 | 2016-02-09 | SNO+ | RAL WMS unavailable |
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 |
---|---|---|---|---|---|---|---|---|
10/02/16 | 100 | 100 | 100 | 100 | 100 | 97 | 100 | |
11/02/16 | 100 | 100 | 100 | 100 | 100 | 100 | N/A | |
12/02/16 | 100 | 100 | 100 | 100 | 100 | 94 | 100 | |
13/02/16 | 100 | 100 | 100 | 100 | 100 | 100 | N/A | |
14/02/16 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
15/02/16 | 100 | 100 | 97 | 100 | 100 | 93 | 100 | Single SRM Test failure on Put (could not open connection to srm-atlas.gridpp.rl.ac.uk) |
16/02/16 | 100 | 100 | 100 | 100 | 100 | 88 | 100 |