RAL Tier1 Operations Report for 24th January 2018
| Review of Issues during the week 18th January 2018 to 24th January 2018
|
- Patching for Spectre and Meltdown was taking place last week. (E.g. an outage of Castor for a few hours last Wednesday, 17th Jan).
- Problems since last week with the Atlas Castor instance. There has been a high rate of deletion requests, and the back end stager database has been struggling to keep up with the total load (reads, writes and deletes). Atlas have backed off at the moment. No more specific cause for the problems found but investigations ongoing.
- There will be an intervention on one of the BMS (Building Management Systems) in the R89 machine room on Wednesday. It has been intermittently faulty causing some system restarts. In one case the chillers failed to restart. This system manages the pumps. The intervention should take less than 30 minutes. On Tuesday one of the pumps will be reconnected ‘stand-alone’ and checked it works OK – and this will be used to maintain flow during the BMS controller swap.
| Current operational status and issues
|
- Ongoing security patching.
| Resolved Castor Disk Server Issues
|
- gdss736 (lhcbDst - D1T0) – rebuilt and back in production (RO)
| Ongoing Castor Disk Server Issues
|
- gdss717 (CMSTape - D0T1) – multiple drive failure
| Limits on concurrent batch system jobs.
|
| Notable Changes made since the last meeting.
|
- Security patching done or underway.
| Entries in GOC DB starting since the last report.
|
| Service
|
Scheduled?
|
Outage/At Risk
|
Start
|
End
|
Duration
|
Reason
|
| srm-atlas.gridpp.rl.ac.uk,
|
UNSCHEDULED
|
OUTAGE
|
22/01/2018 22:00
|
23/01/2018 10:00
|
12 hours
|
urgent fixes needed on Oracle DB backend - extension
|
| srm-atlas.gridpp.rl.ac.uk,
|
UNSCHEDULED
|
OUTAGE
|
22/01/2018 17:45
|
22/01/2018 22:00
|
4 hours and 15 minutes
|
urgent fixes needed on Oracle DB backend
|
| srm-alice.gridpp.rl.ac.uk, srm-atlas.gridpp.rl.ac.uk, srm-biomed.gridpp.rl.ac.uk, srm-cert.gridpp.rl.ac.uk, srm-cms-disk.gridpp.rl.ac.uk, srm-cms.gridpp.rl.ac.uk, srm-dteam.gridpp.rl.ac.uk, srm-ilc.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-lhcb.gridpp.rl.ac.uk, srm-mice.gridpp.rl.ac.uk, srm-minos.gridpp.rl.ac.uk, srm-na62.gridpp.rl.ac.uk, srm-pheno.gridpp.rl.ac.uk, srm-preprod.gridpp.rl.ac.uk, srm-snoplus.gridpp.rl.ac.uk, srm-solid.gridpp.rl.ac.uk, srm-t2k.gridpp.rl.ac.uk,
|
SCHEDULED
|
OUTAGE
|
17/01/2018 10:00
|
17/01/2018 13:00
|
3 hours
|
Outage of Castor Storage to apply Security patches.
|
| lcglb01.gridpp.rl.ac.uk, lcglb02.gridpp.rl.ac.uk, lcgwms04.gridpp.rl.ac.uk, lcgwms05.gridpp.rl.ac.uk,
|
SCHEDULED
|
OUTAGE
|
12/01/2018 10:00
|
19/01/2018 12:00
|
7 days, 2 hours
|
WMS Decommissioning RAL Tier1
|
| Advanced warning for other interventions
|
| The following items are being discussed and are still to be formally scheduled and announced.
|
Ongoing or Pending - but not yet formally announced:
Listing by category:
- Castor:
- Update systems to use SL7 and configured by Quattor/Aquilon. (Tape servers done)
- Move to generic Castor headnodes.
- Echo:
- Update to next CEPH version ("Luminous").
- Networking
- Extend the number of services on the production network with IPv6 dual stack. (Done for Perfsonar, FTS3, all squids and the CVMFS Stratum-1 servers).
- Services
- Ending of WMS service (ongoing).
- Internal
- DNS servers will be rolled out within the Tier1 network.
- Infrastructure
- Testing of power distribution boards in the R89 machine room is being scheduled for some time late July / Early August. The effect of this on our services is being discussed.
| Open GGUS Tickets (Snapshot during morning of meeting)
|
| Request id
|
Affected vo
|
Status
|
Priority
|
Date of creation
|
Last update
|
Type of problem
|
Subject
|
| 117683
|
none
|
on hold
|
less urgent
|
18/11/2015
|
03/01/2018
|
Information System
|
CASTOR at RAL not publishing GLUE 2
|
| 124876
|
ops
|
on hold
|
less urgent
|
07/11/2016
|
13/11/2017
|
Operations
|
[Rod Dashboard] Issue detected : hr.srce.GridFTP-Transfer-ops@gridftp.echo.stfc.ac.uk
|
| 127597
|
cms
|
on hold
|
urgent
|
07/04/2017
|
05/10/2017
|
File Transfer
|
Check networking and xrootd RAL-CERN performance
|
| 131815
|
t2k.org
|
in progress
|
less urgent
|
13/11/2017
|
22/01/2018
|
Storage Systems
|
Extremely long download times for T2K files on tape at RAL
|
| 132589
|
lhcb
|
in progress
|
very urgent
|
21/12/2017
|
10/01/2018
|
Local Batch System
|
Killed pilots at RAL
|
| 132712
|
other
|
in progress
|
less urgent
|
04/01/2018
|
22/01/2018
|
Other
|
support for the hyperk VO (RAL-LCG2)
|
| 132802
|
cms
|
in progress
|
urgent
|
11/01/2018
|
23/01/2018
|
CMS_AAA WAN Access
|
Low HC xrootd success rates at T1_UK_RAL
|
| 132844
|
atlas
|
in progress
|
urgent
|
14/01/2018
|
19/01/2018
|
Storage Systems
|
UK RAL-LCG2 DATADISK transfer errors "DESTINATION OVERWRITE srm-ifce err:"
|
| 132935
|
atlas
|
in progress
|
less urgent
|
18/01/2018
|
22/01/2018
|
Storage Systems
|
UK RAL-LCG2: deletion errors
|
| 132963
|
atlas
|
waiting for reply
|
top priority
|
21/01/2018
|
22/01/2018
|
Middleware
|
RAL arc-ce03 flakey
|
| Day |
OPS |
Alice |
Atlas |
CMS |
LHCb |
Atlas Echo |
Comment
|
| 17/01/18 |
87.15 |
100 |
100 |
100 |
100 |
100 |
|
| 18/01/18 |
100 |
100 |
100 |
100 |
98 |
100 |
|
| 19/01/18 |
100 |
100 |
100 |
100 |
100 |
100 |
|
| 20/01/18 |
100 |
92 |
100 |
100 |
100 |
100 |
|
| 21/01/18 |
100 |
0 |
100 |
100 |
100 |
100 |
|
| 22/01/18 |
100 |
49 |
65 |
100 |
89 |
100 |
|
| 23/01/18 |
100 |
94 |
0 |
100 |
94 |
100 |
|
Key: Atlas HC = Atlas HammerCloud (Queue ANALY_RAL_UCORE, Template 841); CMS HC = CMS HammerCloud
| Day |
Atlas HC |
CMS HC |
Comment
|
| 10/01/18 |
100 |
100 |
|
| 11/01/18 |
100 |
100 |
|
| 12/01/18 |
100 |
100 |
|
| 13/01/18 |
100 |
100 |
|
| 14/01/18 |
100 |
100 |
|
| 15/01/18 |
100 |
99 |
|
| 16/01/18 |
85 |
99 |
|
