RAL Tier1 Operations Report for 18th March 2015
| Review of Issues during the week 11th to 18th March 2015.
|
- The planned move to put in a replacement primary router that was scehduled on the morning of the 5th March had to be delayed (to the morning of the 12th March).
- On Friday (6th March) around 15:00 there was a problem of high packet loss within the Tier1 network following a configuration error. This lasted around 20 minutes.
| Resolved Disk Server Issues
|
- GDSS757 (CMSDisk - D1T0) has failed multiple times this year. It has now been drained and the vendor contacted for further diagnostics. The server did fail one more time during the drain.
| 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.
|
- The roll-out of Condor version 8.2.7 and CVMFS version 2.1.20 to the batch farm is complete apart from mopping up a few nodes.
- This morning (11th March) the firmware version in the pair of switches at the core of the Tier1 network was updated.
- All data has now been migrated off the T10KA, as well as the T10KB tapes.
| Service
|
Scheduled?
|
Outage/At Risk
|
Start
|
End
|
Duration
|
Reason
|
| Whole site.
|
SCHEDULED
|
WARNING
|
12/03/2015 07:45
|
12/03/2015 08:30
|
45 minutes
|
Warning following installation of a replacement network router.
|
| Whole site.
|
SCHEDULED
|
WARNING
|
11/03/2015 10:30
|
11/03/2015 11:00
|
30 minutes
|
Warning on site access during firmware updates on pair of network switches.
|
| Advanced warning for other interventions
|
| The following items are being discussed and are still to be formally scheduled and announced.
|
- Investigate problems on the primary Tier1 router. Discussions with the vendor are ongoing. (Swap with replacement unit planned for tomorrow morning, 12th March).
- 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 were 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
|
12/03/2015 07:45
|
12/03/2015 08:30
|
45 minutes
|
Warning following installation of a replacement network router.
|
| Whole site
|
SCHEDULED
|
WARNING
|
11/03/2015 10:30
|
11/03/2015 11:00
|
30 minutes
|
Warning on site access during firmware updates on pair of network switches.
|
| Open GGUS Tickets (Snapshot during morning of meeting)
|
| GGUS ID |
Level |
Urgency |
State |
Creation |
Last Update |
VO |
Subject
|
| 112166
|
Green
|
Urgent
|
In Progress
|
2015-03-06
|
2015-03-11
|
Atlas
|
RAL-LCG2 DATATAPE: destination transfer errors like "This SURL does not exist in the original request"
|
| 111699
|
Green
|
Less Urgent
|
In Progress
|
2015-02-10
|
2015-02-27
|
Atlas
|
gLExec hammercloud jobs keep failing at RAL-LCG2 & RALPP
|
| 109694
|
Red
|
Urgent
|
In Progress
|
2014-11-03
|
2015-03-10
|
SNO+
|
gfal-copy failing for files at RAL
|
| 108944
|
Red
|
Urgent
|
Waiting Reply
|
2014-10-01
|
2015-03-03
|
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
|
| 11/03/15 |
100 |
100 |
100 |
100 |
100 |
98 |
100 |
|
| 12/03/15 |
100 |
100 |
100 |
95 |
100 |
100 |
100 |
Problem with CE tests - possibly triggered by network intervention.
|
| 13/03/15 |
100 |
100 |
96 |
96 |
96 |
100 |
100 |
Remote monioring problem.
|
| 14/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
| 15/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
99 |
|
| 16/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
| 17/03/15 |
100 |
100 |
100 |
100 |
100 |
100 |
99 |
|
